Memphis, Tenn. ? Scott Wimmer held off Ron Hornaday on a restart with seven laps left Sunday and won the rain-delayed Busch Sam’s Town 250 at Memphis Motorsports Park for his second victory in four races.

Wimmer, who will try to move to Winston Cup next season, led 83 of the 250 laps and passed Hornaday for the final time on the 218th. He averaged 79.337 mph in his Pontiac on the three-quarter-mile oval and had to avoid three cautions in the final 30 laps for his second career victory.

Stacy Compton was second in his Chevrolet, followed by Jamie McMurray, who needed a provisional and started 37th after becoming the quickest Winston Cup winner in the modern era last week at Charlotte in just his second start.

Hank Parker was fourth, and Kerry Earnhardt was fifth.

Series leader Greg Biffle didn’t finish the race and now leads Jason Keller, who was 10th Sunday, by 105 points with four races left. Wimmer is third, 357 points back.

Hornaday got close enough to Wimmer to bump his rear and get his back tires up a couple times, including on a restart on lap 243. Wimmer wound up winning by 0.523 seconds.

“NASCAR’s got the rule you can’t pass outside until after the start-finish line,” Wimmer said. “I’d stay up there until I got to the start-finish line, then slide down. He had nothing to do but run in the back of me.”

Scott Wimmer celebrates. Wimmer won the Sam's Town 250 on Sunday at the Memphis Motorsports Park in Memphis, Tenn.

Wimmer now has eight top-10 finishes since his Busch team lost its sponsor in July. Team owner Bill Davis has been paying the bills while the crew prepares to move up to Winston Cup if a sponsor can be found.

“I don’t know if it made us all work a lot better,” Wimmer said. “I need to race to make a living. I love racing. I didn’t want to be out of the sport. I didn’t want to be on the sideline watching races.”

The race was Biffle’s to win until the 203rd lap. He started from the pole.

Biffle led 103 laps and needed only to avoid trouble to win his fifth race this season. He was trying to pass Tim Fedewa on the outside in turn one when he was knocked into the wall.

“I thought maybe he’d give me a little bit more room,” Biffle said. “It’s one of those things. It’s really, really sad.”