With Keselowski now in the garage, bottom three Chase drivers are: Truex Jr., Elliott and Keselowski.
Caution. No. 2 Keselowski starts smoking, appears to have engine expired.
Blaney goes ahead of Keselowski as he attempts to aid in getting debris off grille of No. 2.
Denny Hamlin in sixth, currently is first Chase driver below the cut-off line (10th).
Keselowski reports he has picked up more debris on his grille.
Chase drivers in the top 10: Keselowski (1st), Logano (3rd), Harvick (4th) and Hamlin (6th).
Current bottom three Chase drivers: Hamlin (6th), Truex Jr. (out), Elliott (15th).
13 Casey Mears officially done for the day.
Non-Chase drivers in the top 10: Blaney (2nd), Brian Scott (4th), Jamie McMurray (8th), Alex Bowman (9th), Ricky Stenhouse Jr. (10th).
Keselowski zooms past 11 Hamlin and 21 Blaney.
Penalty for No. 34 Chris Buescher, over the wall too soon.
Mears has gone to the garage.
Cars coming to pit road.
Biffle dives down and knocks into Earnhardt, Mears to cause the crash.
Caution. 83 Jeffrey Earnhardt, 16 Greg Biffle and 13 Casey Mears involved in crash.
Keselowski says his car had gotten 20 degrees hotter than it was supposed to be until he got debris off.
Keselowski still attempting to get debris off grille, trying to get behind Ryan Blaney, but drops back significantly in pack.
Keselowski reports he's overheating from debris on grille.
Kyle Larson (fifth) and Paul Menard (eighth) have worked their way into top 10.
Chase drivers continue to be spread out, with Joey Logano in 11th, Kevin Harvick in 15th, Austin Dillon in 21st and three JGR drivers near bottom.
Denny Hamlin has worked his way up to fourth.
Bottom three Chase drivers now: Dillon (19th), Truex (out) and Elliott ( 7th).
JGR drivers have worked their way up to 31st, 32nd and 33th now, ahead of drivers such as AJ Allmendinger, Tony Stewart, David Ragan and Jeffrey Earnhardt.
Annett pits and Keselowski regains the lead.
The only other time Michael Annett has led laps this season was in the Daytona 500.
Leader is Michael Annett; he did not come to pit road.
Cars coming to pit road for green-flag stops.
Greg Biffle has cleared the debris from his grille, but he had to drop to 13th to do so.
Keselowski dives to the low line and tries to take the lead from Biffle.
Biffle still concerned about debris on grille, unable to dislodge it from his position in the front. Monitoring temperatures.
Among top 10 cars, Chase drivers include: Chase Elliott (2nd), Kurt Busch (3rd), Jimmie Johnson (5th), Brad Keselowski (7th).
Field has gone single-file on high side around the track.
Biffle continues to lead, but he has a large piece of debris on his grill.
Greg Biffle takes the lead after battling back and forth with Chase Eliott and Brad Keselowski for the position.
Bottom three drivers in Chase standings currently are Truex Jr., (out of race), Elliott (third), Hamlin (25th)
Joey Logano has worked his way back into the top 10.
Kevin Harvick has dropped al the way to 31st. Lowest among Chase drivers -- not including three JGR drivers in the rear.
Truex Jr. officially out of the race for engine problem.
Jimmie Johnson has worked his way up to ninth.
Green flag. Ricky Stenhouse Jr. is the leader.
Amid all the chaos, NASCAR tried to tell Hamlin it was reviewing his penalty, but he already had come to pit road to serve the pass-through.
Caution. Truex smoking, appears to have lost an engine.
Martin Truex Jr. has smoke coming from left side of car.
Logano returnign to pit road to remove the jack from his car.
Penalty for Denny Hamlin too fast on pit road.
Logano has a jack stuck on his car after pulling off pit road.
47 AJ Allmendinger too fast on pit road, must serve pass-through.
Leaders now coming to pit road.
Austin Dillon blows a tire entering pit road. Takes four new tires.
Cars coming to pit road.
Green flag pit stops coming in next 10 laps or so.
Kevin Harvick has dropped back to 17th, Kurt Busch to 23rd, Truex to 25th and Austin Dillon to 28th.
Meanwhile, JGR drivers about six seconds behind other drivers, Tony Stewart being the next-closest competitor in 36th.
Greg Biffle getting in the action trying to take the lead, now has taken second over Keselowski.
Keselowski and Chase Elliott side-drafting, and Keselowski retakes the lead.
Chase Elliott working to take the lead from Keselowski, they're side-by-side.
Keselowski has some debris on his grill, and is monitoring temperatures in the car.
Truex (6th) and Hamlin (8th) are the only Toyota cars in the top 20.
Three Joe Gibbs Racing cars trying not to stay too far back from the lead group, but also give space in case the "Big One" occurs.
Middle-of-the-pack Chase drivers include Austin Dillon in 17th and Jimmie Johnson in 19th.
Keselowski regains the lead. Chase Elliott has moved up to second.
Truex takes the lead from Keselowski, but they continue to battle.
Cars are beginning to separate into distinct packs, with about 25 in the lead group.
Kenseth, Kyle Busch and Edwards remain last three drivers.
Ricky Stenhouse Jr. is in third, Paul Menard is in sixth and Greg Biffle in 10th as non-Chase drivers in top 10.
Kyle Busch, Matt Kenseth and Carl Edwards dropped to the back prior to the start in a team decision.
Brad Keselowski takes the lead, already.
Martin Truex Jr. leads the field to the green flag.
Drivers, Start Your Engines
The command for “Drivers, Start Your Engines,” is being delivered by Bobby Allison, four-time Talladega winner and leader of the Alabama Gang.
The national anthem is being performed by the 313th United States Army Brass Quintet from Birmingham, Ala.
The invocation is being delivered by Reverend Billy Dickey, Alabama Raceway Ministry.
Presentation of Colors
The presentation of colors is by the Alabama National Guard
The field for the Chase for the NASCAR Sprint Cup will be cut from 12 to 8 drivers after today's race. The bottom three drivers in the standings entering the race are Denny Hamlin, Brad Keselowski and Chase Elliott.
Defending race winner
Joey Logano is the defending race winner. He starts 16th on the grid today.
Rounding out the top five on the grid are Brad Keselowski, Matt Kenneth, Chase Elliott and Greg Biffle.
On the pole
Martin Truex Jr. starts on the pole for this afternoon’s race. It is his first pole at Talladega, and his fourth this season.
Welcome to today’s Lap-by-Lap coverage of the Hellmann’s 500 at Talladega Superspeedway. Today’s race is 188 laps, 500 miles.