 Harvick maintained his lead on the restart . Three laps later , Ambrose collided with the wall which prompted the third caution . Most of the drivers stayed on track during the caution , allowing Harvick to remain the leader on the restart . A collision involving Montoya and Stewart occurred on lap 116 and the third caution was given as a result . Harvick led on the restart , although he was passed by Kurt Busch within eleven laps . By lap 143 , Kurt Busch had a 1 @.@ 5 second lead over Harvick . Two laps later , Hamlin passed Harvick to claim second . On lap 155 , Montoya and Stewart were involved in a collision and prompted the fifth caution . During the caution , all of the leaders made pit stops and Montoya was black @-@ flagged for two laps . On lap 158 , Hamlin reclaimed the lead , followed by Kurt Busch and Burton . 
