Biffle ducked into the pits to top off his gas tank under caution on lap 79 of the 160-lap race. That gave him just enough to make it the rest of the way on one more stop and cost favorites Dale Earnhardt Jr. and Michael Waltrip a shot at another restrictor-plate victory.

The former Busch Series and NASCAR Craftsman Truck champion was being pressured by former series champion Bobby Labonte at the end, but Labonte suddenly slowed coming through turn 2 on the final lap, out of gas. More