OAKLAND -- Angels manager Mike Scioscia had no idea he called upon an American League-record 12 pitchers to win on Labor Day.
"Both teams or us?" he asked. "If I had needed a couple more innings, we would have used probably 13 or 14. Hopefully not too often."
Instead of extending the game Monday, Kole Calhoun delivered with a two-run triple in the 11th inning as the Angels outlasted the Oakland Athletics 11-9.
Fernando Salas (1-0), the ninth Angels pitcher, tossed a perfect 10th for the victory. Keynan Middleton came in as the third pitcher of the 11th and got his third career save as Los Angeles tried to move up in the wild-card race.
"That's big. It takes momentum into tomorrow," Calhoun said.
The A's have lost as season-high seven in a row.
Three Angels pitchers didn't record an out. The 12 pitchers overall topped the previous AL mark of 11 done four times, most recently by Tampa Bay in 2013. The Colorado Rockies set a major league record by using 13 pitchers in 2015 during a 16-inning game.
"Thank God for September," said Jesse Chavez, who pitched the fourth for Los Angeles and praised the versatile staff. "That just goes back to how we are in spring training. ... We don't let anybody feel neglected."
Angels star Mike Trout fouled a ball off his lower right leg in the 11th but stayed in the game after being checked by Scioscia and a trainer.
Matt Olson homered twice for Oakland, including a tying, two-run drive with two outs in the ninth against Blake Parker.
"Losing a game like that isn't fun by any means," Olson said. "But it says something the way we stayed in that game the entire time, still fighting in the bottom of the 11th right there."
Blake Treinen (1-3) gave up Calhoun's go-ahead hit.
Martin Maldonado hit two home runs for the Angels, his second multihomer game this season. Luis Valbuena added a three-run drive.
Albert Pujols had three hits and drove in a run. He has 12 RBIs over his last five games and 23 in the past 21.
While Los Angeles starter Parker Birdwell didn't get a decision while pitching into the fourth, the Angels improved to 14-2 in his outings this year.
Khris Davis hit a three-run double and Bruce Maxwell added an RBI single in the first inning to A's starter Chris Smith a nice cushion. But Smith couldn't hold the lead, and has surrendered 10 home runs over his last five starts.
A's hitting coach Darren Bush was ejected in the fifth after Matt Chapman was called out on strikes.