Magneuris Sierra hit an RBI single in the 10th inning, then doubled home the go-ahead run in the 12th that lifted the Los Angeles Angels over the Oakland Athletics 5-4 on Wednesday for a three-game sweep.
"It feels great," Sierra said through a translator. "I feel very thankful for the opportunity they gave me."
The A's suffered their second winless homestand of the season at 0-5.
Jaime Barría (2-2) limited the A's to an unearned run in three innings of relief to pick up his first win since May 8.
"Nothing fazes him," Angels manager Phil Nevin praised. "He goes out and throws strikes and he's going to make his pitches."
The teams traded runs in the 10th inning, with Sierra and Ramón Laureano producing RBI singles. Austin Pruitt (0-1) gave up Sierra's deciding double.
"Sierra's two at-bats in extra innings were awesome to see," Nevin said. "We want to go up there and attack the ball and it paid off today."
The Angels took a 3-0 lead in the sixth on a three-run homer by Luis Rengifo, his seventh of the year.
Oakland tied it in the seventh on a three-run double by Tony Kemp, who was thrown out at third trying to stretch it to a triple.
Athletics starter JP Sears allowed two runs in 5 1/3 innings in his Oakland debut. The left-hander was acquired from the Yankees along with Ken Waldichuk, Luis Medina and Cooper Bowman for Frankie Montas and Lou Trivino on Aug. 1.
"I thought JP, for his first outing as an A, did an outstanding job today," Oakland manager Mark Kotsay said. "He pounded the zone with his fastball, had a couple of strikeouts, no walks. Overall, I thought he did a great job."
Angels right-hander Touki Toussaint fanned six in five scoreless innings in his first start of the season and third appearance overall.
Angels star Shohei Ohtani went 1 for 4 with a single and an intentional walk.
LOWRIE DESIGNATED FOR ASSIGNMENT
Before the game, the A's designated veteran infielder Jed Lowrie for assignment, ending the 38-year-old's third stint in Oakland.
"He's been a part of some great clubs, especially of late," Kotsay said. "He's had some great moments here. So definitely not an easy day."
Lowrie played for the Athletics from 2013-14, 2016-18 and 2021-22, making his lone All-Star Game in 2018. In 50 games this season, he batted .180 with three home runs and 16 RBIs.
Oakland also selected the contract of outfielder Cal Stevenson from Triple-A Las Vegas. He started in center field and went 1 for 3 with a single, walk and sacrifice bunt in his major league debut.
Athletics: RHP Paul Blackburn was placed on the 15-day injured list retroactive to Aug. 5 with inflammation in his right middle finger. "We're going to get him evaluated by a hand specialist Monday," Kotsay said. Sears was called up from Triple-A Las Vegas to replace Blackburn on the active roster.
Angels: LHP Patrick Sandoval (3-7, 3.41 ERA) seeks his first win since May 22 as Los Angeles opens a three-game home series against the Minnesota Twins on Friday. Sandoval has lost six straight decisions.
Athletics: RHP Adam Oller (1-5, 7.63) opens a three-game series in Houston on Friday. Oller earned his first major league win against the Astros on July 25, allowing four runs (three earned) in five innings in a 7-5 victory.
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