ANAHEIM, California — Even after an obstruction call compelled the Oakland Athletics to finish the game under protest, they still escaped the ninth inning with remarkable poise.
Josh Hamilton had a 10th-inning single as the Angels (80-53) edged Oakland (78-55) to begin a four-game series between the California clubs with the majors' two best records.
They've already got a rivalry, and the postseason stakes — along with a crazy play at first base — make it even more exciting.
"I think that's our fourth extra-inning game here," reliever Dan Otero said. "They're a great ballclub, and we know we are, too, so it's a battle every time out. They're going to battle us to the end, and we know we're going to give it all we've got."
Home plate umpire Greg Gibson immediately awarded first base to Aybar, prompting a lengthy argument from A's manager Bob Melvin. The Angels then loaded the bases with one out, but Kole Calhoun popped up and Mike Trout grounded to third against Cook.
Melvin thinks Aybar went out of the baseline and tried to hit the fielder.
"I thought they would overturn it, based on what we were seeing," Melvin said. "It was pretty evident."
Angels manager Mike Scioscia disagreed, saying Aybar "had nowhere to go."
Crew chief Gerry Davis said the obstruction ruling was a judgment call by Gibson. Judgment calls can't be protested, according to Rule 4.19.
Pujols drew a leadoff walk from Ryan Cook (1-2) in the 10th, and Hamilton moved him to third with a bouncing hit up the middle.
Kendrick's long fly to right easily drove in the slow-footed Pujols, setting off a playoff-worthy celebration by the Angels, who have won 12 of 16.
"Every time we play these guys, it's a great game," said Kendrick, who also had two hits. "We've already had a few walk-offs against these guys. We know we've got to play them ... down the stretch."
Fernando Salas (5-0) pitched a perfect 10th for the Angels. He has retired 38 of his last 41 batters.
Sonny Gray pitched seven innings of six-hit ball for Oakland, but left without a decision for the first time in 11 starts.
C.J. Wilson yielded seven hits and blew a three-run lead while pitching into the sixth inning for the Angels.
Gordon Beckham had an early two-run single for the Angels, but Oakland closed to 3-2 in the fifth. Josh Donaldson led off the sixth with his 26th homer, but Angels reliever Mike Morin struck out pinch-hitter Stephen Vogt with the bases loaded to preserve the tie.
The A's took two of three from the Angels at the Coliseum last week. The clubs also begin the final week of the regular season with a three-game series in Oakland.
Athletics: SS Jed Lowrie took live batting practice for the first time since breaking his right index finger.
Angels: Reliever Joe Thatcher's sprained left ankle still isn't ready for a rehab assignment.
Athletics: Jon Lester (13-8, 2.53 ERA) held the Angels to five hits and a run over seven innings in a no-decision last weekend.
Angels: Jered Weaver (14-7, 3.72 ERA) looks to secure the fourth 15-win season of his career.