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PITTSBURGH (AP) — Michael Conforto and Patrick Bailey hit two-run doubles in a five-run 10th inning, and the San Francisco Giants beat the Pittsburgh Pirates 8-4 on Sunday to finish a three-game sweep and extend their winning streak to five.

Pittsburgh tied the score 3-3 in the eighth when Andrew McCutchen singled in his first game off the injured list and came home on Jared Triolo’s sacrifice fly.

With automatic runner Casey Schmitt on second, Wilmer Flores singled off Yerry De Los Santos (0-1) starting the 10th and Joc Pederson hit a go-ahead sacrifice fly.

Pittsburgh Pirates' Andrew McCutchen reacts after he struck out swinging during the first inning of a baseball game against the Miami Marlins, Thursday, June 22, 2023, in Miami. (AP Photo/Wilfredo Lee)

Andrew McCutchen was activated from the 10-day injured list by the Pittsburgh Pirates as pitching prospect Quinn Priester was added to the taxi squad ahead of his likely major league debut Monday.

San Francisco Giants' Michael Conforto celebrates as he stands on second base after driving in two runs with a single off Pittsburgh Pirates relief pitcher David Bednar in the eighth inning of a baseball game in Pittsburgh, Saturday, July 15, 2023. (AP Photo/Gene J. Puskar)

Michael Conforto’s tiebreaking RBI single in the eighth inning lifted the San Francisco Giants to a 3-1 victory over the Pittsburgh Pirates on Saturday night, extending their winning streak to four games.

San Francisco Giants' Luis Matos hits an RBI single off Pittsburgh Pirates relief pitcher Ryan Borucki during the seventh inning of a baseball game in Pittsburgh, Friday, July 14, 2023. The Giants won 6-4. (AP Photo/Gene J. Puskar)

San Francisco rookies Patrick Bailey and Luis Matos hit RBI singles during a three-run rally in the seventh inning that sent the Giants past the Pittsburgh Pirates 6-4.

FILE - LSU's Paul Skenes pitches against Tennessee in a baseball game at the NCAA College World Series in Omaha, Neb., on Saturday, June 17, 2023. Skenes, a hard-throwing pitcher who struck out 209 batters in 122 innings for the Tigers, could be the first pick in Sunday night's Major League Baseball draft.(AP Photo/Rebecca S. Gratz, File)

The Pittsburgh Pirates have selected hard-throwing LSU right-handed pitcher Paul Skenes with the top pick in baseball’s amateur draft.

J.D. Davis walked, Conforto doubled to the right-center gap for a 6-3 lead and Mike Yastrzemski was intentionally walked. Luis Matos was intentionally walked and Bailey doubled to left to put the Giants ahead 8-3.

Ryan Walker (3-0) struck out one in a perfect ninth, and Scott Alexander allowed Henry Davis’ RBI single in the 10th.

Pittsburgh (41-52) has lost seven of eight, dropping a season-worst 11 games under .500. The Pirates are 21-44 after a 20-8 start.

Giants starter Alex Wood allowed one run, five hits and three walks in 3 2/3 innings.

San Francisco took a 3-0 lead in the third off Osvaldo Bido on J.D. Davis’ RBI single, Henry Davis’ run-scoring error in right on Matos’ RBI grounder.

Bido gave up three runs and four hits in 2 2/3 innings.

Bryan Reynolds had an RBI single in the second and Triolo hit a run-scoring grounder in the sixth.

TRAINER’S ROOM

Pirates: McCutchen went 1 for 5 after missing six games with right elbow inflammation. … INF Rodolfo Castro was optioned to Triple-A Indianapolis.

UP NEXT

Giants: RHP Logan Webb (8-7, 3.14) will start Monday’s opener of a four-game series at Cincinnati. Webb struck out 10, allowing seven hits, in nine shutout innings against the Rockies on July 9.

Pirates: RHP Quinn Priester (0-0, 0.00) is expected to make his major league debut Monday in a series opener against Cleveland. The 22-year-old, selected 18th overall in the 2019 amateur draft, is 7-3 with a 4.31 ERA in 18 starts with Triple-A Indianapolis this season.