Giants select Kai-Wei Teng; Randy Rodriguez named closer after Doval trade

The Giants announced they’ve selected right-hander Kai-Wei Teng onto the MLB roster. Reliever José Buttó, acquired from the Mets in the Tyler Rogers deal, has reported to the team and will be active tonight. San Francisco also recalled outfielder Grant McCray. Those three players replace Rogers, Camilo Doval and Mike Yastrzemski.

Teng is up for the first time this season. The Taiwanese pitcher made four relief appearances last year. San Francisco non-tendered him but brought him back on a minor league contract. He has been at Triple-A Sacramento all season. Teng has logged 54 innings across 25 appearances, mostly out of the bullpen, and turned in a 3.67 earned run average. He has recorded a monster 38% strikeout rate against a serviceable if slightly higher than average 9.3% walk rate.

The 26-year-old Teng has never had any issues missing bats in the minors. He has been held back by well below-average control, however. This year’s walk rate is his best since he was in rookie ball. He issued free passes at a 12% clip (with an uncharacteristically low 17.3% strikeout rate) en route to an 8.60 ERA at the Triple-A level a season ago. His performance this year has been far better.

Teng is expected to start tomorrow’s game against the Mets, according to Justice delos Santos of the Mercury News. He’d started four of his past five minor league appearances and has gotten up to 5 2/3 innings. He could take on a reasonable workload, but it’s nevertheless an indictment of the San Francisco rotation that they need to turn to a pitcher who has spent the bulk of the year in the Triple-A bullpen. They recently lost Landen Roupp to elbow inflammation and demoted struggling fifth starter Hayden Birdsong to Triple-A. The state of the rotation is a big reason the Giants pivoted late to trading away three notable players. They’ve fallen below .500 and are six games back in the Wild Card race.

Doval had operated as San Francisco’s closer for most of the season. As expected, Melvin has tabbed Randy Rodríguez as the team’s closer with Doval and Rogers now out of the picture (relayed by Susan Slusser of The San Francisco Chronicle). The 25-year-old righty has had a breakout season, earning a deserved All-Star nod with a 1.20 ERA while striking out 36% of opponents across 45 innings. He has recorded 13 holds and one save — the only one of his career — while blowing two leads. He’s under team control for another five seasons and will not reach arbitration until the 2026-27 offseason.