AVONDALE, Ariz. — Brian Scott got the caution he wanted, racing off to his first NASCAR Trucks win in three years.

James Buescher got a bad break he didn’t need, sending the series championship into what could be a wild finish next weekend.

Scott used a late pass on a restart with two laps left after Buescher hit the wall, winning a wreck-filled race at Phoenix International Raceway on Friday night that tightened the season championship.

“Had it not been for the caution at the end, I don’t think we could have done it,” Scott said.

Buescher could have done without it.

He came into the race with a 15-point lead and appeared to be in position to pad it after Ty Dillon suffered damage from a wreck with about 40 laps left.

All Buescher had to do was hold on. His truck wouldn’t let him.

Working his way back from a pit mishap with about 100 laps left — he slid into the wall in his stall — Buescher was running seventh when his right front tire went down, sending his No. 31 truck into the wall. Buescher finished 17th, leaving him 11 points ahead of Timothy Peters, who avoided the wrecks to finish fourth, and 12 ahead of Dillon. Joey Coulter, who finished third, is 29 points back.

Scott can’t win the season championship, but he may have taken a big step toward landing a ride next season.

Driving the No. 18 Toyota that Kyle Busch won with at the last Trucks race at PIR in February 2011, Scott was hoping for a caution late in the race to give him a shot at passing Kyle Larson.

He got it with three laps left, when Buescher slammed into the wall.

Scott beat Larson on the restart and held on over the final lap for his second career Trucks victory — first since 2009 at Dover. He is the 15th different winner this season, a Trucks series record.

Scott’s timing was pretty good, too; his Nationwide deal with Joe Gibbs Racing ends next week.

“I’m on the market. I’m looking for something,” Scott said. “I don’t know whether it’s going to be Nationwide, Truck. I feel like I can still be competitive. The last two years have been rough.”