NASCAR officials handed down penalties to five Cup Series teams Tuesday for lug-nut infractions, including one-race suspensions for two crew chiefs after last weekend’s events at Phoenix Raceway.

Two cars — the No. 2 Team Penske Ford for driver Brad Keselowski and the No. 99 Trackhouse Racing Team Chevrolet for Daniel Suarez — were each found with two lug nuts not properly secured in a post-race check after Sunday’s Instacart 500. Each team’s crew chief — Penske’s Jeremy Bullins and Trackhouse’s Travis Mack — was fined $20,000 and suspended for the next Cup Series race.

According to team rosters for Atlanta, Grant Hutchens will fill in as the crew chief for the No. 2 team, while Jose Blasco-Figueroa will serve as the No. 99’s crew chief.

RELATED: Atlanta weekend schedule

Three cars were also found in violation of Section 10.9.10.4 (Tires and Wheels) in the NASCAR rule book, but with just one unsecured lug nut each. Those teams were assessed a $10,000 crew-chief fine apiece:

  • The No. 1 Chip Ganassi Racing Chevrolet for driver Kurt Busch (crew chief Matt McCall)
  • The No. 18 Joe Gibbs Racing Toyota for driver Kyle Busch (crew chief Ben Beshore)
  • The No. 24 Hendrick Motorsports Chevrolet for driver William Byron (crew chief Ryan “Rudy” Fugle)

NASCAR officials also issued a behavioral penalty to Jonathan Stewart, who is listed as an engineer for GMS Racing’s No. 21 entry in the Camping World Truck Series. Stewart was suspended indefinitely for a violation of NASCAR’s Substance Abuse Policy (Section 19) and Section 12.1, which outlines violations and disciplinary action.

There were no penalties from last weekend’s Xfinity Series event.

The Cup Series’ next race is Sunday’s Folds of Honor QuikTrip 500 (3 p.m. ET on FOX, PRN and SiriusXM NASCAR Radio) at Atlanta Motor Speedway, part of a tripleheader for all three NASCAR national series.

When Michelle Lackey Maynor says she’s raced a little bit of everything, she means it.

She got her start in drag racing, taking cars, trucks, and even snow machines down the strips in Alaska. She’s raced snow machines on water and snow and done hill crosses.

She’s raced in the Sports Car Club of America, and last November she got her NHRA Super Comp license, so she said she can “go real fast, legally.”

Even last year she tried racing on a dirt track for the first time, “so now we’re building a dirt track car,” she said.

So it makes sense someone who grew up around so much racing would take a job at a race track.

TIMOTHY C HIGDON SR
Michelle Lackey Maynor during pre-race at Alaska Motor Speedway (Timothy C. Higdon Sr.)

Maynor is the General Manager at Alaska Raceway Park, a NASCAR-sanctioned 1/3-mile asphalt oval track and 1/4-mile drag strip in Palmer, Alaska, where she started working when her parents bought the track in 1997. She became operations manager of the track’s oval when it opened in 2016.

“Our family kind of grew up in racing,” Maynor said.

Maynor’s family was involved with a dirt track team when they lived in Wisconsin and her dad raced. When they moved to Alaska in the early ’80s they got out of the sport a bit until Maynor’s brother started drag racing in 1986.

Even though Maynor grew up around racing and has been around ARP for 25 years, there was a learning curve to taking over operations of the circle track.

“On the drag strip side it helped out a lot because I grew up as a racer so I know things from the racer side of it,” she said. “It was more of a challenge on the circle track because it’s not where I grew up. The first oval track race I attended was opening day for our track.”

Maynor said she’s still constantly learning new things at the ARP circle, and she’s found that other people who run NASCAR short tracks across the country have been a great help in her education. Two years ago she traveled to Evergreen Speedway in Washington to see how they run their track and meet the tech crew.

“I’ve been really fortunate that there are a lot of really good mentor tracks out there that have been able to provide information for me and for my parents on how to do this and how to make it work right,” she said.

“I think that’s one of the things that’s probably most unique about motorsports is if you’re a racer you’re a racer. It doesn’t matter where you’re from, and it’s the same for track operators. We’re all in this together so its like an instant bond. Everybody is really able to help each other out often and it just makes it really cool. You can go anywhere and everybody has an open door and they’re ready to teach you and help you make the sport better because it makes it better for everybody.”

Working in racing and being part of the larger track family has only reinforced Maynor’s love for the sport. She has her family who runs ARP, her family at tracks across the country, and her family at her home track, all of whom make her job special.

“I really love racing, but I really love being able to put all of the stuff together to make the event happen,” she said. “For me, it’s been our family. It’s not just my mom, my dad, my brothers, and me. It’s all of these people that have been part of our racing family and our community since the beginning. A lot of these guys, they’ve seen me grow up and they’ve seen my daughter grow up and it’s all our family. We see our family every summer and now we have the circle track and we have additional family.

“It’s being able to provide this facility for our family, but for all of those other kids and the new people who are coming in… That’s kind of what motivates me to keep doing it.”

ARP will open the season in May, and Maynor is equally as busy now as she will be once the season begins. Right now she’s spending a lot of time as what she calls a “paperwork pusher,” making orders, perfecting the track’s processes for putting on a race, making upgrades to the facility, and making sure they have employees lined up for summer, contracts filled out, and sponsorship taken care of.

Once the summer comes around again, it’s all about getting everything lined up for race day week after week. On race day, she’ll start in the pits talking with drivers and making sure the crew down there and around the grandstands has everything they need, then oversee the grounds from the tower.

“It’s always exciting and that’s part of why this is such a cool job because it’s never the same thing every day,” Maynor said. “I’ve never been one to have a cube job… There’s a lot of people who are perfectly content working in their office and doing their office things and they don’t really interact with other people, and that’s great because we need people like that too, but that’s not who I fit into.”

The busy job doesn’t allow Maynor much time to get behind the wheel as often as she’d like. She still has some bucket list tracks and driving schools she might try to get to this fall.

She mostly only races for fun maybe once or twice a year, but just because she doesn’t drive anymore doesn’t mean she isn’t still able to share her love of the sport.

“I might only get to race once a year but it’s a really good way to let off steam. And I’m not in charge of it,” she said with a laugh.

NASCAR officials plan to introduce a new facet to the COVID-19 screening process this weekend, using trained dogs to detect coronavirus among essential personnel for Sunday’s Cup Series race at Atlanta Motor Speedway.

The procedure will be deployed on a trial basis before Sunday’s Folds of Honor QuikTrip 500 (3 p.m. ET on FOX, PRN and SiriusXM NASCAR Radio) as a potential first line of at-track defense intended to limit the disease’s spread. Teams were notified Tuesday. It’s the latest development in an evolving process and one that could present an efficient, highly accurate and cost-effective supplement to the existing procedures.

RELATED: Atlanta schedule | Cup Series entry list

“We think that these dogs and this capability is going to allow us to rapidly confirm that all of those people entering the essential footprint on Sunday — that’s race teams, that’s NASCAR officials, that’s the vendors that work inside the garage — all those folks are COVID-free or not,” said Tom Bryant, NASCAR managing director of racing operations. “The ability to do that has kind of been the math problem that we have continuously tried to solve since March of last year.”

NASCAR will work with 360 K9 Group, which has training facilities in Anniston, Alabama, and New Smyrna Beach, Florida. Two teams of dogs will screen essential personnel, assessing in less than 30 seconds per person whether COVID-19 is present and then alerting their handlers if the disease is detected.

After an alert, those individuals will be isolated and subject to comprehensive secondary screening by the American Medical Response (AMR) Safety Team’s lead physicians to determine their status for Sunday’s race. The K9 unit will not be used to screen Cup Series drivers, who remain apart from the garage footprint on race day, or the limited number of fans in the grandstands during Sunday’s trial run.

Bryant has seen the benefits of trained K9 units in other environments close to him. As a 20-year U.S. Army veteran, he has witnessed dogs’ efforts to sniff out explosives and firearms in military operations. Dogs have also been involved in isolating the scent of citrus canker, a bacterial disease harmful to crops near his Florida home.

Those efforts have been made with the support of the U.S. Department of Agriculture (USDA). The 360 K9 Group adds that clinical studies have shown that the same bio-detection technology can locate the presence of COVID-19 in humans at an accuracy rate of 98%.

“They are amazing,” Bryant said. “This gives us essentially an ability to test that essential population on race day and know right away that those folks who have cleared this enhanced screening process with a very high degree of confidence are COVID-free. We’ll learn from what we do Sunday, and we’ll figure the ways to best employ this capability moving forward to ensure that we’re keeping the population as safe as we can, keeping the least amount of risk in the environment.”

This screening technique arrives near the one-year mark of the COVID-19 outbreak, deployed at the same track where the sport’s racing calendar was abruptly halted last March. NASCAR returned in mid-May at Darlington Raceway and rallied to complete the 36-race circuit on its scheduled finishing date last November. To help control the disease’s impact, officials streamlined race weekends and reduced the number of at-track attendees.

MORE: Saving the Season: NASCAR’s 2020 return

Bryant acknowledged the hurdles officials have faced in conducting large-scale screening, crediting AMR medical staff, epidemiologists and Centers for Disease Control and Prevention (CDC) guidelines in helping to “navigate the forest” of testing. He said NASCAR officials are tracking the vaccination status of the industry’s essential personnel and immunization numbers are on a positive trend.

Bryant noted, however, even with the finish line seemingly in sight, the industry remains on high alert for the virus and its mutations and variants, aiming to keep the health of the essential bubble intact.

“As much as things are getting better, it’s still very much a challenge,” Bryant said. “So this tool is going to help us as the virus evolves, we’re evolving with our approach to how we minimize exposure and create the safest possible environment to race.

“You’ve heard the drivers and everybody in the industry talk about the energy and the sense you get and the feeling you get when you’ve got all the fans right there, enjoying the action. That’s what we’re going to get back to, and I’m a big optimist that we’re much closer to getting back to that than we were. I’m really excited for the day when that comes, and this is a tool that can help us get closer to that.”

Longtime NASCAR Whelen Modified Tour team owner Salvatore “Sully” Tinio has passed away.

Tinio was 72 years old and spent much of his life at the racetrack.

From 2011 to 2018, Tinio was the owner of the No. 44 Tinio Racing team on the Whelen Modified Tour. Despite only fielding a full-time team twice, Tinio Racing always fielded a competitive team whenever showing up to the track.

“Our hearts go out to the family and friends of Sully Tinio during this difficult time,” Tour Director Jimmy Wilson said Sunday. “Sully’s competitive spirit and determination embodied the best attributes of the NASCAR Whelen Modified Tour. He built a rich legacy as a winning car owner and dear friend to many, and his presence will be missed.”

In eight seasons on the Whelen Modified Tour, Tinio Racing scored 11 poles and 11 race victories, including a streak of three in a row at New Hampshire Motor Speedway with 2010 Tour champion Bobby Santos behind the wheel.

The last win for the team came in July of 2018 at Loudon when Santos nipped Chase Dowling by .007 seconds.

According to RaceDayCT, Tinio Motorsports was planning a return to competition for the 2021 season in select Modified races with Santos behind the wheel, set to begin in April.

STAFFORD, CT - MAY 23: Bobby Santos driver of the #44 Tinio Racing/ImperialCars.com Chevrolet car prepares for practice prior to the TSI Harley-Davidson 125 at Stafford Motor Speedway May 23, 2014 in Stafford, Connecticut. (Photo by Darren McCollester/Getty Images for NASCAR)*** Local Caption *** Bobby Santos. | Getty Images
Sully Tinio (back middle) with driver Bobby Santos before practice for the TSI Harley-Davidson 125 at Stafford Motor Speedway May 23, 2014 in Stafford, Connecticut. (Darren McCollester/Getty Images for NASCAR)

NASCAR will hold its second Next Gen test of 2021 on Wednesday at Richmond Raceway. Bubba Wallace of 23XI Racing will be behind the wheel of the car for the scheduled session at the .75-mile Virginia short track.

The test was originally set for two days of on-track activity, with Wallace first taking the wheel on Tuesday. But inclement weather that is anticipated in the Richmond area has delayed his travel itinerary, and there are no plans for any test laps that day.

The Next Gen car was previously on the track in January at Charlotte Motor Speedway. Chip Ganassi Racing’s Kurt Busch was behind the wheel as adjustments to components of the Next Gen car were validated.

RELATED: Views of Next Gen car on track

Previous to Charlotte, the Next Gen car saw its first superspeedway action late last year at Daytona International Speedway with Roush Fenway Racing’s Chris Buescher behind the wheel. And in November at the Charlotte Motor Speedway Roval, Martin Truex Jr. and Busch took part in the first test where multiple cars were on the track.

The Next Gen car is scheduled for its competition debut in 2022. The prototype’s first on-track test was also held at Richmond, with Austin Dillon driving on Oct. 8-9, 2019.

DAYTONA BEACH, Fla. — NASCAR and Pit Boss® Grills announced today a multiyear extension, continuing the brand’s designation as the “Official Grill of NASCAR.” Pit Boss Grills, one of the fastest growing grill companies in the U.S., entered the sport as an official partner in 2018, marking the brand’s first professional sports property agreement.

“Based on the success of our initial agreement, Pit Boss Grills has since expanded its NASCAR presence with partnerships across the industry, the most effective way to market to our fans.” said Michelle Byron, vice president, partnership marketing, NASCAR. “Our partnership with Pit Boss Grills is built upon our joint family values and the organic connection between our fans and their love for grilling, a staple at any NASCAR race weekend. We are very excited to continue this partnership in the years ahead.”

Pit Boss Grills recently announced a partnership with Speedway Motorsports, which includes a race entitlement at the highly anticipated NASCAR debut at Circuit of the Americas in May – the NASCAR Xfinity Series Pit Boss 250. In addition, Pit Boss Grills partnered with NASCAR Cup Series driver Aric Almirola and the No. 10 team of Stewart-Haas Racing, debuting its sponsorship this past weekend at Phoenix Raceway.

“We are blessed to extend our partnership with NASCAR and take our relationship to the next level,” said Dansons President Jeff Thiessen. “Not only do our companies share the same core values and beliefs, but race fans are also our consumers. Both NASCAR and Pit Boss support an atmosphere of family and friendship and are supported by a common community of individuals who are passionate about those same principles. We’ve seen continued successes for our brand within the sport over the last two years and look forward to where the future will take us.”

The NASCAR Official Partnership renewal solidifies the future of Pit Boss Grill’s involvement in the sport. Through the extended partnership, Pit Boss Grills will expand its activation across NASCAR-owned race tracks, bringing its presence to 18 at-track activations across the NASCAR schedule in 2021. Pit Boss Grills will continue to activate at retail and key race events throughout the season for strategic hospitality events.

Pit Boss Grills will continue to participate in the NASCAR Fuel for Business Council, which brings together an exclusive group of more than 50 Official NASCAR Partners to construct business-to-business deals and co-marketing initiatives.

Phoenix Raceway is hosting two NASCAR race weekends this season. One just happens to include the championship event.

The same was the case last year, but the 18 years before that were a different story. Homestead-Miami Speedway used to host the championship and only the championship. There were no regular-season trials.

Phoenix’s first race is already over. Martin Truex Jr. won Sunday’s Instacart 500. He’s already locked into the 2021 NASCAR Playoffs after having not qualified for the Championship 4 field in 2020.

RELATED: Race results | Martin Truex Jr. wins at Phoenix Raceway

“I just don’t think people understand how hard it is with no practice, to try to be perfect every week,” said Truex’s crew chief, James Small. “It takes a lot of effort, a lot of refinement, everything we can do just to be good off the truck. … We got back from Phoenix last year, we sucked, we finished 10th. We were unhappy with how we ran.”

So the No. 19 team got to work. Immediately.

Five races into the 2021 slate, that work has already paid off. Truex scored his first career win at Phoenix in 31 starts. More importantly, he gained much-needed confidence for the Nov. 7 finale in Arizona over his competition.

Joey Logano finished second after leading a race-high 143 of the 312 laps. Denny Hamlin was then third, followed by pole-sitter Brad Keselowski and reigning champ Chase Elliott in fourth and fifth, respectively.

“We haven’t had that dominant car like we’ve had during some races last year yet, other than Daytona,” Hamlin said. “I thought our car was very, very good. We’ve just been hanging around that second, third, fourth all year. It’s a good start because we got something to build on here.”

Second, third or fourth may not be enough to win the title. It very well could be, depending how the final results play out. But ever since the elimination Championship 4 format was installed in 2014, the champion doubled as the race winner.

That includes last season when Elliott scored his first Bill France Cup in Phoenix’s first year hosting the championship.

“I think the fastest car is able to win the race,” Logano said. “I think that’s happened probably the last three or four times here, the fastest car has won. I think that’s fair. That’s what we all want. But it’s the opportunity to make something happen if you’re in the hunt towards the end.”

Which is exactly what Truex did. His Toyota wasn’t the fastest. He had the fourth-best car when it came to green-flag speed. Hamlin actually had the best mark, followed by Logano and Keselowski.

Still, Truex was able to navigate his way toward the front of the pack and when a late-race restart came about with 25 laps to go, he capitalized on his front-row opportunity, taking the lead from Logano and holding onto it until the checkered flag.

“As James said, we sucked last year,” Truex said. “Confidence is a big deal. But usually you’re confident because you’ve had past success, you can build on those things, you understand the race track, you understand how to make the car do certain things. I think from that standpoint, this is a big boost for us to knock this one out today, and now know if we can get here in the final four, we know what it takes and we have what it takes to get the job done here.”

Martin Truex Jr. is the latest NASCAR Cup Series driver to enter the NASCAR Camping World Truck Series’ dirt race at Bristol Motor Speedway. The Pinty’s Truck Race on Dirt is set for March 27 (8 p.m. ET on FS1, MRN and SiriusXM NASCAR Radio).

“Damn, they spilled the beans?” Truex said. “OK, yeah. We are. We’re going to run the Truck race.”

RELATED: Bristol Motor Speedway dirt transformation in photos

The No. 19 Joe Gibbs Racing Toyota wheelman confirmed his plans Sunday night during a post-race Zoom. Truex had just won the Instacart 500 at Phoenix Raceway — his first career win at the 1-mile track.

Truex will drive for teammate Kyle Busch’s team — Kyle Busch Motorsports — which supports three Toyotas.

“I’ll run Kyle’s truck,” Truex said. “He said I can drive it for free, so I did it.”

The appearance — his first in Camping World Trucks since 2006 — will provide prep time for NASCAR Cup Series’ March 28 main event, the first for the circuit on dirt since 1970.

RELATED: Kevin Harvick to compete in Bristol dirt truck race

Martin Truex Jr. overcame an early-race brush with the wall and took the lead on the final restart with 25 laps remaining to earn his first victory of 2021 and first in 31 career starts at Phoenix Raceway.

Truex’s No. 19 Joe Gibbs Racing Toyota ultimately held off Joey Logano’s No. 22 Penske Racing Ford by a convincing 1.698 seconds for the win in the Instacart 500. The 2017 NASCAR Cup Series champion Truex took the race lead from the outside on a bold restart move — pulling away in the closing laps of a spirited race that featured 22 lead changes. 

Truex, 40, of New Jersey, is now the fifth different winner in as many NASCAR Cup Series races this season joining Michael McDowell, Christopher Bell, William Byron and Kyle Larson, who have also earned spots in the playoffs.

RELATED: Official results | Standings

“Just an awesome job by everybody, (crew chief) James (Small), all the pit crew guys fixing it, just really solid,” said Truex, who now has 28 career wins. “At the beginning of the race I thought we were going to run 15th or so. Man, I just really can’t believe it. I’m kind of speechless.

“This feels pretty amazing. Phoenix has been a tough one for us.

“I wish it was November and I was in the final four,” he added with a smile, referring to the season championship finale at Phoenix Raceway later in the year. “Just so thankful and proud of everyone at JGR, everyone who makes this possible.”

RELATED: See the scenes from the weekend at Phoenix Raceway 

Statistically, Logano’s Ford was the dominant car on the afternoon, leading a race best 143 of the 312 laps and winning Stage 2 — his first stage win of the year. His Penske teammate Ryan Blaney won Stage 1 (also his first stage victory of 2021) and all three Penske Racing cars finished in the top 10.  In all, the Penske trio of Logano, Blaney and Keselowski combined to lead 197 laps — out front 63 percent of the day.

Logano started alongside Truex on the front row for the final restart and mounted a challenge for the lead, but he couldn’t hold off Truex even with a more favorable inside starting position.

“I was surprised he was able to hang with me on that (final) start,” a disappointed Logano conceded of Truex’s winning move. “He had a good start, too, but I had a good one on the bottom and I thought might have short-cut it on the dogleg and I thought, boy I might have him cleared. Then we went into that corner still door-to-door and when you’re door-to-door, the outside car has control.

“I’m pretty sure even if I beat him even on that start he was still going to hound me and probably get by me. They had the best car. We had a good car for sure, but once they tuned it in toward the second stage, it was the best car on the race track.”

RELATED: Joey Logano says second place ‘hurts’

Truex’s JGR teammate Denny Hamlin was third, followed by Logano’s teammate Brad Keselowski and last November’s Phoenix winner Chase Elliott in fifth.

Kevin Harvick, a nine-time Phoenix winner, was sixth, earning his fourth top-10 finish in the season’s opening five races. Last week’s Las Vegas winner Kyle Larson was seventh, his Hendrick Motorsports teammate William Byron was eighth followed by JGR driver Christopher Bell and Blaney to round out the top 10.

Even without the victory, it was an impressive showing for the three Hendrick Motorsports cars that rallied to top-10 finishes. Elliott, Larson and Byron all had to start from the rear of the field on Sunday. And the fourth Hendrick car, driven by Alex Bowman, was equally resilient with a 13th-place finish despite hitting the wall and bringing out an early race caution flag.

RELATED: Early trouble for Alex Bowman at Phoenix

Larson, in particular put on a lesson in resiliency. He rallied to race among the top 10 — even lead a lap — a third of the way into the race but was sent back to the rear of the lead lap cars twice after that because of pit road speeding violations.

Hamlin, Keselowski and Logano — all still looking for their first 2021 wins — are 1-2-3 in the championship standings with Hamlin holding a 39-point edge over Keselowski as the series heads to Atlanta Motor Speedway for next weekend’s Folds of Honor QuikTrip 500 (Sunday, 3 p.m. ET, FOX, PRN, SiriusXM NASCAR Radio).

Note: The race winning No. 19 Joe Gibbs Racing Toyota of Martin Truex Jr. passed NASCAR’s post-race technical inspection. The No. 1 Chip Ganassi Racing Chevrolet (Kurt Busch), the No. 18 Joe Gibbs Racing Toyota (Kyle Busch) and the No. 24 Hendrick Motorsports Chevrolet (William Byron) all had one lug nut safe and secure, while the No. 2 Team Penske Ford (Brad Keselowski) and the No. 99 Trackhouse Racing Team Chevrolet (Daniel Suarez) had two lug nuts not safe and secure.

Contributing: NASCAR.com staff reports

Which channels have NASCAR programming this week? We answer that and give the weekly NASCAR television listings here in the NASCAR TV schedule.

Note: All times are ET.

MORE: How to find NBCSN | Get the NBC Sports App | How to find FS1 | Get FOX Sports App

Monday, March 15
Midnight, NASCAR Cup Series Instacart 500 at Phoenix Raceway (re-air), FS1
3 a.m., Unrivaled: Earnhardt vs. Gordon (re-air), FS1
4 a.m., NASCAR Race Hub Best of Radioactive: Phoenix (re-air), FS1
4:30 a.m., NASCAR Cup Series: Instacart 500 at Phoenix Raceway (re-air), FS1
7 p.m., NASCAR Race Hub: Best of Radioactive — Atlanta, FS1

Tuesday, March 16
Midnight, NASCAR Cup Series: Instacart 500 at Phoenix Raceway (re-air), FS2
9 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS2
6 p.m., NASCAR Race Hub, FS1
7 p.m., Unrivaled: Earnhardt vs. Gordon (re-air), FS1

On MRN:
7 p.m., NASCAR Live

Wednesday, March 17
5:30 p.m., Dale Jr. Download, NBCSN
6 p.m., NASCAR Race Hub, FS1
7 p.m., The Golden Hour: Making of Days of Thunder (re-air), FS1
8 p.m., NASCAR Cup Series: Instacart 500 at Phoenix Raceway (re-air), FS2
11 p.m., NASCAR Xfinity Series: Call 811 Before You Dig 200 presented by Arizona 811 (re-air), FS2

Thursday, March 18
1 a.m., The Golden Hour: Making of Days of Thunder (re-air), FS2
2 a.m., Unrivaled: Earnhardt vs. Gordon (re-air), FS2
3 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS2
5 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS1
8 p.m., Dale Jr. Download (re-air), NBCSN

Friday, March 19
1 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS2
2:35 p.m., IMSA Michelin Pilot Challenge: Sebring International Raceway, TrackPass

Saturday, March 20
6:30 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS1
7 a.m., Unrivaled: Earnhardt vs. Gordon (re-air), FS1
10 a.m., IMSA WeatherTech Sportscar Championship: Mobil 1 Twelve Hours of Sebring, NBCSN/TrackPass
11 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS1
11:30 a.m., Blink of an Eye (re-air), FS1
Noon, IMSA WeatherTech Sportscar Championship: Mobil 1 Twelve Hours of Sebring, NBC Sports App
1 p.m., NASCAR Race Hub: Best of Radioactive — Atlanta, FS2
1:30 p.m., NASCAR RaceDay: NCWTS at Atlanta, FS1
2:30 p.m., NASCAR Camping World Truck Series: Fr8Auctions 200 at Atlanta Motor Speedway, FS1
4:30 p.m., NASCAR RaceDay: Xfinity Series at Atlanta, FS1
5 p.m., NASCAR Xfinity Series: EchoPark 250 at Atlanta Motor Speedway, FS1 (Canada: TSN 2)
7 p.m., NASCAR Xfinity Series: Post-race Show, FS1
7 p.m., IMSA WeatherTech Sportscar Championship: Mobil 1 Twelve Hours of Sebring, NBCSN
7:30 p.m., Blink of an Eye (re-air), FS1
9:30 p.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS1
10 p.m., The Golden Hour: Making of Days of Thunder (re-air), FS1

On MRN:
2 p.m., NASCAR Camping World Truck Series: Fr8Auctions 200 at Atlanta Motor Speedway

On PRN:
5 p.m., NASCAR Xfinity Series: EchoPark 250 at Atlanta Motor Speedway

Sunday, March 21
1 a.m., NASCAR Xfinity Series: EchoPark 250 at Atlanta Motor Speedway (re-air), FS1
3 a.m., NASCAR Camping World Truck Series: Fr8Auctions 200 at Atlanta Motor Speedway (re-air), FS1
5 a.m., The Golden Hour: Making of Days of Thunder (re-air), FS1
6 a.m., The Day: Atlanta 1992 — Petty’s Last Race (re-air), FS1
7 a.m., NASCAR RaceHub: Best of Radioactive — Atlanta (re-air), FS1
8:30 a.m., NASCAR Race Hub: Best of Radioactive — Atlanta (re-air), FS2
9 a.m., NASCAR Xfinity Series: EchoPark 250 at Atlanta Motor Speedway (re-air), FS2
11 a.m., NASCAR Xfinity Series: EchoPark 250 at Atlanta Motor Speedway (re-air), FS1
1 p.m., NASCAR RaceDay: Cup Series at Atlanta, FS1
2:30 p.m., NASCAR RaceDay: Cup Series at Atlanta, FOX
3 p.m., NASCAR Cup Series: Folds of Honor QuikTrip 500 at Atlanta Motor Speedway, FOX (Canada: TSN 5)

On PRN:
3 p.m., NASCAR Cup Series: Folds of Honor QuikTrip 500 at Atlanta Motor Speedway