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

Lap 176 -- YELLOW FLAG NO. 4: Jimmie Johnson spins coming off Turn 2. He got loose coming off the turn, got touched by Sam Hornish Jr. in the spin and collected Martin Truex Jr. as he slid in front of traffic.

Lap 172 -- LEAD CHANGE: Dale Earnhardt Jr. edges ahead for a lap as they cross the line, but Tony Stewart gets the top spot back. Kasey Kahne gets loose and goes to the bottom but recovers and falls back in line.

Lap 172 -- LEAD CHANGE: Tony Stewart is back out front.

50th Daytona 500

• Most memorable
• Winning drivers
• Winning crew chiefs
• History of the 500
• How DIS came to be
• Flashback: Daytona '79

Lap 171 -- LEAD CHANGE: Dale Earnhardt Jr. leads the lap when Tony Stewart slid to the high side after a minor bump from Junior.

Lap 170 -- LEAD CHANGE: Tony Stewart and Greg Biffle motor down the inside lane to take the front positions.

Lap 169 -- LEAD CHANGE: Kasey Kahne gets a push from Tony Stewart on the outside to take the lead in the two-wide battle. Matt Kenseth is back on the racetrack.

Lap 165 -- GREEN FLAG: Dale Earnhardt Jr. gets the race back under way.
1. Dale Earnhardt Jr.
2. Dave Blaney
3. Tony Stewart
4. Kasey Kahne
5. Clint Bowyer

Lap 162 -- LEAD CHANGE: Dale Earnhardt Jr. stays out and leads.

Lap 162 -- Leaders head down pit road except for Dale Earnhardt Jr.:
• Kyle Busch gets no adjustments, just four tires but loses nine spots
• Tony Stewart gets two tires and fuel
• Kasey Kahne gets two tires and fuel
• Dave Blaney gains 10 spots and is out first

Lap 161 -- YELLOW FLAG NO. 3: David Ragan slams hard into the wall and has major damage on the right-front. Several cars divert down pit road to avoid it. Teammate Matt Kenseth gets collected and has slight damage to the right-front due to Ragan cutting him off coming off Turn 4.

Lap 159 -- Jeff Gordon: "Suspension failure. We saw signs of this when we were testing. It's a product of the suspension we're running with these bump-stops. The handling went away and I don't know why. There's definitely a problem, and it's probably not just us."

Lap 158 -- LEAD CHANGE: Kyle Busch goes back to the point, passing Greg Biffle with help from teammate Tony Stewart.

Lap 156 -- GREEN FLAG: Greg Biffle gets the race back under way.
1. Greg Biffle
2. Kyle Busch
3. Tony Stewart
4. Dale Earnhardt Jr.
5. Matt Kenseth

Lap 154 -- Jeff Gordon heads to the garage. He made three pit stops but on the final one the team determined a right-front bracket was bent.

Lap 153 -- LEAD CHANGE: Greg Biffle wins the race off pit road and becomes the new leader. Denny Hamlin stays in the pits to fix his fender. Kurt Busch is back on pit road to make his stop.

Lap 152 -- LEAD CHANGE: Clint Bowyer is credited for leading the lap due to how they cross the line on pit road.

Lap 152 -- The leaders head down pit road:
• Clint Bowyer gets four tires and fuel but no adjustments
• Jeff Gordon gets adjustments to make his car free
• Kyle Busch drops the air pressure in his tires
• Tony Stewart gets minor adjustments
• Dale Earnhardt Jr. is free and gets a track-bar adjustment
• Kurt Busch misses his pit stall and drives through
• Michael Waltrip slides through his pit and has to back up

Lap 150 -- YELLOW FLAG NO. 2: Debris is on the racetrack.

Lap 145 -- Kenny Wallace heads to the garage after being black-flagged for failing to maintain minimum speed.

Lap 143 -- Rookie Sam Hornish Jr. is having a solid run in 10th position.

Lap 135 -- All three Michael Waltrip Racing cars are running nose-to-tail: David Reutimann (18th), Dale Jarrett (19th) and Michael Waltrip (20th).

Lap 132 -- Regan Smith has slowed and is off the pace after slapping the wall hard. He heads to pit road.

Lap 131 -- Denny Hamlin has some damage to his left-rear fender; sheet metal is hanging out, drastically affecting his ability to move through the draft. He's now running 20th.

Lap 130 -- After running as far back as 30th, Jimmie Johnson has battled his way back into the top 10, running 10th.

Lap 124 -- LEAD CHANGE: Kyle Busch motors back around Ryan Newman to take the lead once again and complete green-flag stops.
1. Kyle Busch
2. Ryan Newman
3. Dale Earnhardt Jr.
4. Tony Stewart
5. Clint Bowyer

Lap 123 -- LEAD CHANGE: Ryan Newman is the new leader when the Waltrip cars make their stops. Kurt Busch is penalized for speeding as he leaves pit road. He must serve a drive-through penalty.

Lap 122 -- LEAD CHANGE: Michael Waltrip takes the lead when Greg Biffle makes his pit stop. David Reutimann runs second, also a MWR car.

Lap 121 -- LEAD CHANGE: Kyle Busch pulls in to make his pit stop, giving the lead to Greg Biffle. Ryan Newman also pits, followed by the majority of the front-running cars. Biffle gets a track-bar adjustment.