Cook, who'd led 127 of the race's first 154 laps before a slow pit stop dropped his Ford to fifth place, battled back to within a half-second of Leffler's Dodge but was running out of time when Brian Rose hit the Turn 4 wall.

The race's third caution extended the 200-lap, 200-mile distance for three laps -- the last two under green -- and Cook took full advantage of the reprieve.

The Ohio native was able to dive under Leffler's truck as the pair began the 202nd trip around the flat, one-mile speedway. He took the lead off Turn 2 and extended the advantage to .696-seconds -- about two truck lengths -- at the checkered flag. More