Hamlin started 19th and gradually worked through the field, moving in behind pole sitter Kevin Harvick for second. Hamlin got out of the pits faster than Harvick after Bobby Hillin Jr. spun out on the 93rd lap and built the lead to nearly 3 seconds to win his fourth Nationwide race this year.
Bowyer had a strong run to maintain his series points lead, working his way up from 17th to second to push his lead to 196 points over Carl Edwards, who finished fourth. David Ragan was third.
Kyle Busch made a push, positioning himself for a possible run at a ninth Nationwide win this season. Instead, last week's Nationwide winner stormed off to his hauler after being spun into the wall on Lap 153.
FORMULA ONE: In Singapore, Ferrari's Felipe Massa edged title rival Lewis Hamilton, of McLaren, in qualifying, taking the pole position for today's Singapore Grand Prix.
With overtaking expected to be difficult on the tight and bumpy track for F1's first ever night race, Massa has a significant edge over the driver who leads him by one point in the standings.
With Hamilton sitting on the provisional pole in the waning seconds of qualifying, Massa put in a stunning final lap, setting a time nearly 0.6 seconds faster than the Briton.