Lap-by-Lap: Chicagoland

Lap 267 -- CHECKERED FLAG: Kyle Busch wins Saturday night's LifeLock.com 400 by 0.159 seconds over Jimmie Johnson, who whacks the outside wall coming out of the final corner. Kevin Harvick is third, followed by Greg Biffle and Tony Stewart.

Busch gets his car stuck in the infield grass while celebrating. His crew runs over from their pit stall to join in.

Lap 266 -- WHITE FLAG: Kyle Busch goes to the outside and passes Jimmie Johnson on the backstretch.

Lap 265 -- GREEN FLAG: Jimmie Johnson leads with two laps remaining, barring another yellow.

Lap 261 -- CAUTION FLAG NO. 9: David Gilliland's engine blows up.

Lap 258 -- Matt Kenseth battles Tony Stewart for sixth.

Lap 257 -- Ten laps to go. The current top five ...

1. Jimmie Johnson
2. Kyle Busch
3. Kevin Harvick
4. Greg Biffle
5. Brian Vickers

Lap 250 -- LEAD CHANGE: Jimmie Johnson goes to the inside of Kyle Busch and leads for the first time tonight.

Lap 248 -- GREEN FLAG: Kyle Busch brings the field to the stripe.

Lap 244 -- CAUTION FLAG NO. 8: Bobby Labonte spins on the backstretch. Jamie McMurray gets the free pass.

Lap 242 -- Jimmie Johnson pulls up on Kyle Busch's rear bumper and looks for a way past.

Lap 240 -- GREEN FLAG: Kyle Busch leads Jimmie Johnson and Kevin Harvick.

Lap 236 -- CAUTION FLAG NO. 7: Debris in Turn 3. Travis Kvapil gets the free pass.

Lap 233 -- Jimmie Johnson passes Ryan Newman for second, and Kevin Harvick gets him for third.

Lap 230 -- GREEN FLAG: Kyle Busch leads the field to the stripe.

The current top five ...

1. Kyle Busch
2. Ryan Newman
3. Jimmie Johnson
4. Greg Biffle
5. Kevin Harvick

Lap 228 -- LEAD CHANGE: Kurt Busch pits, handing the lead to younger brother Kyle. Carl Edwards and Michael Waltrip go to the back for pitting too early.

Lap 227 -- LEAD CHANGE: Kurt Busch stays out and leads a lap.

Lap 226 -- Leaders pit for possibly the final time.

• Kevin Harvick says he's still tight
• Brian Vickers still loose off
• Kyle Busch, no changes

Ryan Newman makes up 15 spots after taking only two tires.

Lap 225 -- CAUTION FLAG NO. 6 -- Debris on the backstretch. Jason Leffler gets the free pass.

Lap 224 -- Jimmie Johnson gets by Kevin Harvick for second, 1.7 seconds behind leader Kyle Busch.

Lap 212 -- LEAD CHANGE: Carl Edwards heads for pit road for an unscheduled stop, thinking he has a flat tire, giving up the lead to Kyle Busch. He returns 31st, one lap down. The splitter brace is broken and the splitter is dragging on the track.

Lap 207 -- Matt Kenseth, who started 30th on the last restart, is back up to 15th.

Lap 204 -- LEAD CHANGE: Carl Edwards gets past Kyle Busch for the lead.

Lap 192 -- Carl Edwards passes Tony Stewart for second.

Lap 190 -- The current top five ...

1. Kyle Busch
2. Tony Stewart
3. Carl Edwards
4. Kevin Harvick
5. Jimmie Johnson

Lap 182 -- GREEN FLAG: Kyle Busch leads the green to the line.

Lap 181 -- Additional debris has been spotted, so the yellow stays out one more lap.

Lap 178 -- A busy pit road as the leaders head down for service.

• Carl Edwards, four tires and wedge adjustment
• Tony Stewart needs help getting back in the gas, track-bar adjustment
• Kyle Busch, a little tight at the end of the run

Kyle Busch wins the race off pit road, followed Tony Stewart, Carl Edwards, Kevin Harvick and David Ragan.

Lap 177 -- CAUTION FLAG NO. 5: Debris on the backstretch. Matt Kenseth gets the free pass.

Lap 175 -- Tony Stewart is closing in on Kurt Busch for the lead, while Kevin Harvick is third, more than five seconds behind.

Lap 160 -- The current top five ...

1. Kyle Busch
2. Tony Stewart
3. Kevin Harvick
4. Carl Edwards
5. David Ragan

Lap 146 -- GREEN FLAG: Kyle Busch brings the field to the stripe.

Lap 142 -- Lead-lap cars are on pit road.

David Ragan gets an air-pressure adjustment
Tony Stewart goes with four tires
Brian Vickers was tight and the team pulled some front-air dam tape
Kyle Busch gets four tires and a tear-off.

Michael McDowell is too fast entering and exiting and will serve a penalty.

Lap 141 -- CAUTION FLAG NO. 4: Debris in Turn 1. Jeff Burton gets the free pass.

Lap 130 -- The current top five ...

1. Kyle Busch
2. Tony Stewart
3. David Ragan
4. A.J. Allmendinger
5. Brian Vickers

Lap 125 -- Matt Kenseth may have a punctured right-rear tire and is heading for the pits. He returns in 37th place, one lap down.

Lap 120 -- LEAD CHANGE: Matt Kenseth gives up running side-by-side, handing the lead to Kyle Busch. Tony Stewart is third.

Lap 117 -- Matt Kenseth and Kyle Busch are timed in a dead-heat at the line.

Lap 116 -- GREEN FLAG: Matt Kenseth brings the field to the stripe.

Lap 113 -- LEAD CHANGE: Matt Kenseth, Kyle Busch, David Ragan and A.J. Allmendinger stayed out.

Lap 112 -- Leaders are on pit road.

• Carl Edwards takes two tires
• Greg Biffle gets four tires
• Tony Stewart gets two tires
• Jimmie Johnson gets four tires and two rounds up on the track bar

Lap 111 - CAUTION FLAG NO. 3: Michael Waltrip spins through the infield grass after tapping Jeff Burton in an effort to avoid Patrick Carpentier, and is able to rejoin the race.

Lap 110 -- The current top five:

1. Greg Biffle
2. Brian Vickers
3. Tony Stewart
4. Carl Edwards
5. Jeff Gordon

Lap 106 -- LEAD CHANGE: Greg Biffle acquires the lead when Martin Truex Jr. pits. Travel Kvapil hits the commitment cone and will serve a penalty.

Lap 104 -- LEAD CHANGE: Tony Stewart pits, handing the lead to Martin Truex Jr. Kurt Busch gets a "too fast entering pit road" penalty.

Lap 103 -- Kyle Busch and Carl Edwards in. Busch makes a wedge and air pressure adjustment.

Lap 102 -- Jimmie Johnson, air pressure adjustment and one round up on the track bar.

Lap 101 -- Dale Earnhardt Jr. is in for a pit stop. The car is still too tight. Kasey Kahne also heads for the pits.

Lap 100 -- The current top five ...

1. Tony Stewart
2. Martin Truex Jr.
3. Carl Edwards
4. Kevin Harvick
5. Matt Kenseth

Lap 93 -- LEAD CHANGE: Tony Stewart takes the lead as the cars that stayed out on the last caution head for the pits under green-flag conditions. Stewart last pitted on Lap 50.

Lap 92 -- LEAD CHANGE: Brian Vickers takes the lead as Greg Biffle heads for pit road.

Lap 90 -- The current top five ...

1. Greg Biffle
2. Brian Vickers
3. Tony Stewart
4. Martin Truex Jr.
5. Carl Edwards

Lap 85 -- Martin Truex Jr. breaks into the top five.

Lap 77 -- Jimmie Johnson's rear-view mirror has a broken mount and at least one piece is jiggling around.

Lap 76 -- Dale Earnhardt Jr. is mired in 26th position.

Lap 74 -- Kyle Busch has faded to ninth since the restart.

Lap 70 -- The current top five ...

1. Greg Biffle
2. Brian Vickers
3. Jeff Gordon
4. Tony Stewart
5. Carl Edwards

Lap 62 -- Brian Vickers goes by Jeff Gordon for second.

Lap 59 -- Denny Hamlin returns after changing an ignition box. He's four laps down.

Lap 56 -- LEAD CHANGE: Greg Biffle gets around Jeff Gordon.

Lap 55 -- Jimmie Johnson gets around Ryan Newman for fifth. Kyle Busch is already back up to third.

Lap 52 -- GREEN FLAG: Jeff Gordon brings the field to the line.

Lap 50 -- LEAD CHANGE: The leaders hit pit road for service. Jeff Gordon, Greg Biffle, Brian Vickers, Ryan Newman and Jason Leffler stay out.

Lap 49 -- Jeff Burton is in the pits with the hood up.

Lap 45 -- YELLOW FLAG NO. 2: Denny Hamlin is stopped between Turns 3 and 4.

Lap 44 -- LEAD CHANGE: Carl Edwards gets by Kyle Busch. Denny Hamlin is running slowly on the apron of the track. He claims the car keeps shutting off.

Lap 42 -- Tony Stewart passes Jeff Gordon for fifth.

Lap 40 -- GREEN FLAG: The top five ...

1. Kyle Busch
2. Carl Edwards
3. Dale Earnhardt Jr.
4. Jimmie Johnson
5. Jeff Gordon

Lap 37 -- Everyone but Michael McDowell heads for pit road. Jeff Burton made up 16 spots, but had contact on pit road, never got into his pit stall and then was caught speeding and will be sent to the tail end of the lead lap cars.

Lap 36 -- YELLOW FLAG NO. 1: Competition caution to check tire wear. J.J. Yeley gets the free pass.

Lap 30 -- No change among the top nine, but Martin Truex Jr. breaks into the top 10 after starting 19th.

Lap 22 -- Denny Hamlin has slipped back to 13th after starting seventh.

Lap 20 -- Tony Stewart has gone from 12th to sixth.

Lap 10 -- Kyle Busch has led all 10 laps. The rest of the top five: Carl Edwards, Jimmie Johnson, Matt Kenseth and Dale Earnhardt Jr.

Lap 4 -- Michael McDowell is in the pits for right-side tires after scraping the wall after contact with Jason Leffler.

Lap 1 -- GREEN FLAG: Kyle Busch leads the field to the line and the LifeLock.com 400 is under way. J.J. Yeley will have to serve a pass-through penalty for an "unapproved part." The team reportedly placed lead in the driver drinking system, then replaced it to make the car lighter.

8:07 p.m. -- Brendan Fraser screams out the command for drivers to start their engines.

8:00 p.m. -- Invocation and National Anthem.

7:55 p.m. -- The wet weather has passed Joliet, so it's sunny and the winds are letting up. Driver introductions are continuing.

7:45 p.m. -- There will be a competition caution on Lap 35 to check tires, according to NASCAR officials.

7:30 p.m. -- Kyle Busch, who won Friday night's Nationwide Series race, is the hot topic as Bill Weber and Wally Dallenbach Jr. take their places in front of the camera.

6:40 p.m. -- It's cloudy and windy at the track, with a 30 percent rain of scattered showers until race time. Then the forecast calls for gradually clearing skies.

6:30 p.m. -- TNT's pre-race show is on the air, with Tony Stewart and Joe Gibbs on the set.

5:40 p.m. -- It's sunny at Chicagoland as drivers prepare for the unknown: night racing in Chicago. Green is set for just after 8 p.m. ET.

WEEKEND HEADLINES
• Drivers unsure of what to expect at night at Chicago
• Storms force cancellation of Chicago Cup qualifying
• Franchitti looking for a ride, still shocked at shutdown
• DEI to appeal penalty from infractions prior to Daytona
• Elledge replaces Viers as crew chief for No. 84 car
• Sospenzo new crew chief for McDowell's No. 00 car
• With Stewart moving on, eyes turn to young Logano
• Changes loom as Stewart looks to put stamp on team
• Zipadelli to keep on going without Stewart in No. 20
• Haas CNC offered a deal Stewart could not refuse