At 300: Greg Biffle steals lead

FORT WORTH, Texas -- With 34 laps left, Greg Biffle has stolen the lead from Jimmie Johnson. The two remain neck-and-neck.

Mark Martin is seven seconds behind in third. Jeff Gordon is building on his impressive run and has moved into fourth followed by Matt Kenseth and Martin Truex Jr.

Tony Stewart has fallen two laps behind the leader on his disappointing night.

Kasey Kahne has come back from several problems to move into the eighth spot.