Hamlin gave up the lead with less than 10 laps left Monday when he headed to pit road for tires. He then rallied from ninth place to the lead in a span of just four laps.
The finish was a two-lap sprint in which he started fourth. He pushed Ryan Newman out of his way, then slipped inside Matt Kenseth and leader Jeff Gordon for the victory.
The race originally was scheduled for Sunday but was postponed a day because of rain.