Lap-by-Lap: Daytona (cont'd)

Lap 120 -- Carl Edwards, Regan Smith and Martin Truex Jr. begin pit stops. Edwards gets service in 13.6 seconds.

Lap 110 -- LEAD CHANGE: Kyle Busch takes the lead from Greg Biffle with an inside pass in Turn 2.

Lap 109 -- LEAD CHANGE: Greg Biffle drafts past Roush Fenway Racing teammate Matt Kenseth to take the point.

Lap 108 -- LEAD CHANGE: Matt Kenseth puts his Ford out front for the first time, passing Kyle Busch. During the lead change, Kurt Busch dips low and gets two wheels into the infield grass on the backstretch trying to avoid Dale Earnhardt Jr.

Lap 100 -- At the halfway point, Kyle Busch leads. The leader at halfway has not won the Daytona 500 since Davey Allison in 1992. Pole-sitter Jimmie Johnson runs 30th with an extremely loose racecar.

Lap 98 -- Jeff Gordon gets by Kurt Busch to break up the brother combination and take second.

Lap 94 -- LEAD CHANGE: Kyle Busch edges past his brother Kurt Busch to lead. Meanwhile, the group behind them, led by eighth-place Dale Earnhardt Jr., comes across the stripe three-wide.

Lap 90 -- Dale Earnhardt Jr.'s shifter is stripped and he's having trouble shifting the car when getting up to speed. His crew is preparing a repair to hand to their driver.

Lap 88 -- Mark Martin has a tire going down and is off the pace. He dives onto pit road. Brian Vickers is also slow and heads to pit road.

Lap 86 -- LEAD CHANGE: Kurt Busch dives to the inside and passes Reed Sorenson for the top spot. Sorenson gets shuffled back.

Lap 85 -- GREEN FLAG: Reed Sorenson gets the Daytona 500 back under way.
1. Reed Sorenson
2. Kurt Busch
3. Kyle Busch
4. Jeff Gordon
5. Denny Hamlin

Lap 82 -- LEAD CHANGE: Reed Sorenson stays out to lead. Kurt Busch also stays out.

Lap 81 -- The leaders head to pit road:
• Kyle Busch gets fuel and right-side tires
• Greg Biffle gets two tires and fuel
• Martin Truex Jr. gains 12 positions and is out seventh
• Dale Earnhardt Jr. takes four tires and adjustments

Lap 80 -- YELLOW FLAG NO. 1: Debris is on the racetrack.

Lap 80 -- After the second round of green-flag stops, Kyle Busch leads by less than a second.
1. Kyle Busch
2. Jeff Gordon
3. Denny Hamlin
4. Matt Kenseth
5. Greg Biffle

Lap 77 -- LEAD CHANGE: Kyle Busch is the leader once again as Reed Sorenson pulls in for his stop. Ryan Newman is also in for tires and fuel, as is Travis Kvapil.

Lap 76 -- LEAD CHANGE: Reed Sorenson is the new leader as teammates Kyle Busch and Denny Hamlin make their stops. Both get four tires; Busch is out in 12.8 seconds. Tony Stewart, their other teammate, is also in.

Lap 75 -- Dale Earnhardt Jr., Juan Montoya and Kyle Petty are all on pit road. Matt Kenseth and Jimmie Johnson join them for green-flag stops. Johnson's car falls off the jack, costing him valuable time.

Lap 74 -- Casey Mears pulls in to make his four-tire pit stop. He was running just outside the top 20.

Lap 70 -- Elliott Sadler hits pit road early after working his way into the top 10. He has slight scrapes on his right side. He gets four tires and fuel.

Lap 68 -- LEAD CHANGE: The swapping between teammates continues as Kyle Busch snags the lead back from Denny Hamlin.

Lap 65 -- LEAD CHANGE: Denny Hamlin gets a strong run on the bottom and takes the lead as they cross the line.

Lap 63 -- The top eight cars are within a second of each other, with a tight battle going on for third, fourth and fifth as Denny Hamlin shuffles in the draft.

Lap 59 -- Sam Hornish Jr. is on pit road with a potential vibration problem. He gets four new tires.

Lap 56 -- Joe Nemechek is back on the track. His problem was a lug nut that went through the oil pan, but the team has repaired it.

Lap 55 -- LEAD CHANGE: Kyle Busch moves back around Denny Hamlin for the top spot.

Lap 54 -- Dale Earnhardt Jr. on the racing: "It's been rough all day. It wasn't this rough [Saturday]."

Lap 49 -- LEAD CHANGE: Denny Hamlin moves by Kyle Busch for the lead.

Lap 41 -- LEAD CHANGE: Kyle Busch takes the lead by passing Jeff Gordon after green-flag pit stops.
1. Kyle Busch
2. Jeff Gordon
3. Denny Hamlin
4. Dale Earnhardt Jr.
5. Matt Kenseth

Lap 41 -- Joe Nemechek is taking his car to the garage.

Lap 41 -- Dale Earnhardt Jr. reports he has a vibration. He fears that his lug nuts may not be tight. "It ain't real little. I haven't ever felt one like this. Not typical."