SAN FRANCISCO (Interstat) — Max Muncy’s solo home run in the eighth inning gave the Athletics a late lead Wednesday night at Oracle Park, but the San Francisco Giants answered with two runs in the bottom of the ninth to walk off 2-1 before 37,526.

The victory lifted the Giants to 33-46, while the Athletics dropped to 38-42.

Muncy’s blast off San Francisco reliever Dylan Smith on a 1-0 pitch leading off the top of the eighth cleared the center-field fence for his fifth homer of the season, breaking a scoreless deadlock. It was the only run the Athletics managed against a Giants pitching staff that limited them to three hits.

Tyler Mahle, starting for San Francisco, delivered a masterful effort, allowing two hits and no runs over 5-2/3 innings while striking out four. Gage Jump matched him for Oakland, scattering three hits and striking out nine across five scoreless innings. Both starters departed with the game still 0-0.

Hogan Harris followed Jump with a scoreless sixth, striking out two. Ryan Walker worked a perfect seventh, and Sam Hentges got two outs in the eighth before Smith entered and surrendered Muncy’s homer.

Luis Medina retired the Giants in order in the seventh, striking out two. Justin Sterner handled the eighth, and Elvis Alvarado took the mound for the ninth with a 1-0 lead.

Alvarado, who entered with a 3-3 record, retired the first batter he faced. But Rafael Devers greeted him with a game-tying solo shot to center for his 12th home run. After Willy Adames flied out and Jung Hoo Lee flied out, the Giants had two down and the game appeared headed to extra innings. Victor Bericoto then sent a 2-1 pitch over the center-field wall for his second homer of the season, ending the game.

Erik Miller earned the win, his first against no losses, after pitching a scoreless ninth. Miller struck out one and allowed no hits.

The Athletics had few opportunities against Mahle and the Giants bullpen. Their best chance came in the fifth when Jacob Wilson singled and Joey Meneses walked, but a lineout by Lawrence Butler turned into a bizarre double play. Casey Schmitt’s throwing error allowed Meneses to advance, but Wilson was thrown out at home on a relay from left fielder Bericoto to catcher Eric Haase.

Oakland’s only other hit was a sixth-inning double by Henry Bolte. The Athletics struck out 12 times and drew three walks. San Francisco managed six hits, including doubles by Lee and singles by Jonah Cox, Bericoto and Lee a second time.

The Giants struck out 13 times but made the hits count when it mattered most.

Both teams had traded scoreless frames for eight innings. The Athletics put a runner on second in the fourth on Bolte’s walk, but Nick Kurtz grounded into a double play. In the bottom of the fourth, Bryce Eldridge walked for San Francisco, but three consecutive strikeouts ended the threat.

The game, which lasted 2 hours, 28 minutes, was the second of a three-game series. won the opener 3-1 on Tuesday.

Interstat’s game simulator had projected a final score of Athletics 5, Giants 3. Interstat’s ELO system gave San Francisco a 54.60 percent probability to win. The Athletics were installed as a pregame favorite with a spread of -1.5. The total score of three went over the over/under line of eight.