SAN FRANCISCO (AP) — Paul Blackburn and five relievers combined on a three-hitter, making Chad Pinder’s leadoff homer stand up for the Oakland Athletics in a 1-0 victory over San Francisco that ended the Giants’ five-game winning streak Wednesday night.

Blackburn (3-0) allowed three hits in five innings, lowering his ERA to 1.35. The right-hander pitched around traffic, inducing three double-play grounders in the first three innings — including a difficult 3-6-1 turn to end the third after the Giants had loaded the bases.

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Domingo Acevedo, Sam Moll, Zach Jackson and Kirby Snead combined for three scoreless innings. Dany Jimenez pitched the ninth and got help from instant replay for his fourth save while helping the A’s to their second shutout in three games.

Wilmer Flores appeared to reach on an infield single leading off the ninth when he outran first baseman Seth Brown to the bag after a short grounder. Brown was positioned far away from the base when he fielded the ball and Flores was initially ruled safe before the call was overturned on replay.

Pinder came off the COVID-19 injured list before the game and celebrated by crushing opener Sam Long’s sixth pitch into the left-field stands. The left fielder also singled in the third.

Oakland got a runner to third in the fifth and seventh but failed to score. The A’s have been held to two runs or fewer in seven of their last nine games.

The Giants entered the day leading the majors in scoring but went cold offensively on a chilly night at Oracle Park.

Long (0-1) took the loss while working as the Giants’ opener for the third time in the last six games.

TRICKY PLAY

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Giants outfielder Luis González began the game in center, then moved to right in the fourth and made a tough catch while battling the swirling wind on Christian Bethancourt’s fly ball. González turned around while chasing the ball, then slipped and fell to his knees before making the catch.

TRAINER’S ROOM

Athletics: 3B Kevin Smith began a rehab assignment with Triple-A Las Vegas. … INF Christian Lopes was returned to Las Vegas.

Giants: Leadoff hitter Joc Pederson was removed with right groin tightness.

UP NEXT

Athletics: RHP Frankie Montas (2-3, 3.28 ERA) pitches against the Guardians on Friday. Montas is holding opposing hitters to a .180 batting average this season.

Giants: Following an off day, LHP Alex Wood (2-0, 2.51) faces the Nationals on Friday in the opener of a three-game series.

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