Points leader Brad Keselowski, fighting a faulty clutch for much of the race, put more distance between his Nationwide Series rivals Saturday with a convincing victory in the Carfax 250 at Michigan International Speedway in Brooklyn, Mich.

Keselowski had clutch problems that caused his Dodge to stall during one green-flat pit stop, but it wasn't enough to slow him when his car got rolling.

He's now 347 points ahead of Carl Edwards, who finished 3.179 seconds behind in second place.

Edwards edged Kyle Busch at the start-finish line.

The race was cleanly contested between Keselowski and Edwards, both of whom were placed on probation by NASCAR after incidents with each other this season at Atlanta and Madison, Ill.

Danica Patrick struggled, finishing four laps down in 27th.

•Todd Bodine scored his second straight NASCAR Camping World Truck Series victory, leading the final 47 laps of the race to win the Too Tough To Tame 200 at Darlington (S.C.) Raceway.