Kai-Wei Teng - MLB News, Rumors, & Updates

Headed to Houston Teng was traded from the Giants to the Astros in exchange for a minor-league player on Thursday, Robert Murray of FanSided.com reports.

Impact Teng has experience as both a reliever and starter in the majors, and he worked primarily out of the Giants' rotation toward the end of the 2025 season. He still has two options remaining, so there's a strong chance Teng begins the season with Triple-A Sugar Land, though he should contribute to the big-league team at some point in 2026.

4 DAYS AGO • ROTOWIRE

Fans six in three-inning start Teng allowed two runs on a hit and two walks while striking out six over three innings in a no-decision versus the Dodgers on Saturday.

Impact Teng threw just 39 of 74 pitches for strikes but was able to limit the damage to a two-run home run by Max Muncy in the first inning. The Giants look to be limiting Teng's workload -- he's reached the five-inning mark in just two of his eight major-league appearances this season. He's at a 6.37 ERA, 1.55 WHIP and 39:17 K:BB through 29.2 innings with the big club. Teng could get one more appearance this season, which is tentatively projected to be at home versus the Rockies in the final series of the year.

SEPTEMBER 21, 2025 • ROTOWIRE

Fans six in three-inning start Teng allowed two runs on a hit and two walks while striking out six over three innings in a no-decision versus the Dodgers on Saturday.

SEPTEMBER 21, 2025 • ROTOWIRE

Dodgers take on the Giants on home winning streak

The Los Angeles Dodgers, on a three-game home winning streak, host the San Francisco Giants

SEPTEMBER 20, 2025 • Associated Press

Decent in no-decision Teng allowed one unearned run on two hits and a walk while striking out five over four innings in a no-decision versus the Diamondbacks on Monday.

Impact Teng gave up a run in the first inning but generally allowed the Giants to keep things close before the bullpen had a rough night. This was Teng's first appearance in over a week after he allowed four runs on three hits and five walks versus the Cardinals on Sept. 7. The right-hander is now at a 6.41 ERA, 1.61 WHIP and 33:15 K:BB through 26.2 innings over seven appearances (six starts) in the majors this season. The Giants' rotation has been in flux recently, but Teng would next be available to pitch on normal rest in the back half of this weekend's four-game road series versus the Dodgers.

SEPTEMBER 16, 2025 • ROTOWIRE

Perdomo and Gallen help surging Diamondbacks inch closer in playoff race with 8-1 win over Giants

Geraldo Perdomo went 3 for 3 with a double, a triple and two RBIs, Zac Gallen pitched six smooth innings and the surging Arizona Diamondbacks beat the San Francisco Giants 8-1

SEPTEMBER 16, 2025 • Associated Press

Diamondbacks play the Giants in first of 3-game series

The Arizona Diamondbacks start a three-game series at home against the San Francisco Giants on Monday

SEPTEMBER 15, 2025 • Associated Press

Fans eight in Sunday's loss Teng (2-4) took the loss against the Cardinals on Sunday, allowing four runs on three hits and five walks while striking out eight across four innings.

Impact Teng and Sonny Gray were locked in a pitchers duel Sunday, with the former keeping the Cardinals off the board through the first four frames. Things fell apart in the fifth for Teng, who issued three straight walks before yielding an RBI single and being pulled from the inning, but not before being tagged for three more runs. Teng was able to generate 14 whiffs on 77 pitches (41 strikes) and has registered eight strikeouts in back-to-back starts, but his five walks were a season high. The Giants currently have a six-man rotation, but it's unclear whether Teng will get another turn or head back to Triple-A Sacramento.

SEPTEMBER 8, 2025 • ROTOWIRE

Gray takes no-hit bid into 6th as Cards beat Giants 4-3 Sunday

Sonny Gray took a no-hit bid into the sixth inning and the St. Louis Cardinals beat San Francisco 4-3 to leave the Giants four games back for the last NL wild card

SEPTEMBER 7, 2025 • Associated Press

Cardinals and Giants square off with series tied 1-1

Both the St. Louis Cardinals and the San Francisco Giants are looking for a series win with a victory on Sunday

SEPTEMBER 7, 2025 • Associated Press

Records victory Monday Teng (2-3) earned the win over Colorado on Monday, allowing two runs on nine hits and no walks while striking out eight batters over 5.1 innings.

Impact Teng struggled with an 8.78 ERA over four starts in August prior to a brief minor-league demotion, but he looked like a different pitcher Monday. Not only did the right-hander limit the Rockies to two runs, he also fanned eight batters, doubling his previous season-best mark. Teng did allow traffic in all but one of his frames, but the Rockies didn't score on him until after he gave way for a reliever with one out in the sixth. Teng figures to get another turn in the rotation given this strong outing, and he lines up to face the Cardinals in St. Louis this weekend.

SEPTEMBER 2, 2025 • ROTOWIRE

Drew Gilbert homers and gets 4 hits as Giants top Rockies 8-2

Drew Gilbert had a career-high four hits, including one of San Francisco’s three home runs, and the surging Giants beat the Colorado Rockies 8-2

SEPTEMBER 1, 2025 • Associated Press

Rockies open 3-game series against the Giants

The Colorado Rockies start a three-game series at home against the San Francisco Giants on Monday

SEPTEMBER 1, 2025 • Associated Press

Promoted, joining rotation Monday The Giants recalled Teng from Triple-A Sacramento on Sunday, and he's expected to start Monday's game against the Rockies in Colorado, Shayna Rubin of the San Francisco Chronicle r...

Impact The right-hander has struggled to an 8.78 ERA across 13.1 frames in the majors this season, but he'll receive another opportunity with the Giants after starter Carson Whisenhunt (back) was placed on the injured list Sunday. Despite his struggles over four outings with the Giants, Teng has been effective for Sacramento this season with a 3.63 ERA, 1.12 WHIP and 89:22 K:BB across 57 innings.

AUGUST 31, 2025 • ROTOWIRE

Going back to minors The Giants optioned Teng to Triple-A Sacramento on Thursday.

Impact Teng has had an excellent season in the minors, but thus far that hasn't translated at the big-league level, as he's posted an 8.78 ERA and 12:9 K:BB over 13.1 frames covering three starts and one relief outing. He'll try to get back on track and earn another opportunity later this season.

AUGUST 21, 2025 • ROTOWIRE

Takes another loss against Padres Teng (1-3) allowed three runs (two earned) on three hits and a walk while striking out four over 3.1 innings to take the loss versus the Padres on Tuesday.

Impact Teng's last two outings have been against San Diego, and he's allowed a total of 10 runs (eight earned) over five innings against the Giants' division rivals. Teng has maintained the last spot in San Francisco's rotation this month, staying in the majors over Carson Whisenhunt when Landon Roupp returned from an elbow injury. That said, Teng's 8.78 ERA and 12:9 K:BB through 13.1 innings over four appearances haven't inspired much confidence in his major-league readiness. If he gets another start, it's projected to be another challenging matchup this weekend in Milwaukee.

AUGUST 20, 2025 • ROTOWIRE

Takes another loss against Padres Teng (1-3) allowed three runs (two earned) on three hits and a walk while striking out four over 3.1 innings to take the loss versus the Padres on Tuesday.

Impact Teng's last two outings have been against San Diego, and he's allowed a total of 10 runs (eight earned) over five innings against the Giants' division rivals. Teng has maintained the last spot in San Francisco's rotation this month, staying in the majors over Carson Whisenhunt when Landen Roupp returned from an elbow injury. That said, Teng's 8.78 ERA and 12:9 K:BB through 13.1 innings over four appearances haven't inspired much confidence in his major-league readiness. If he gets another start, it's projected to be another challenging matchup this weekend in Milwaukee.

AUGUST 20, 2025 • ROTOWIRE

Pivetta strikes out 10 in combined 4-hitter as the Padres beat the Giants 5-1

Nick Pivetta allowed a leadoff homer by Jung Hoo Lee and then settled down to tie his season high with 10 strikeouts in six innings and lead the San Diego Padres to a 5-1 victory a...

AUGUST 20, 2025 • Associated Press

Padres look to end 4-game skid, play the Giants

The San Diego Padres aim to break a four-game slide when they take on the San Francisco Giants

AUGUST 19, 2025 • Associated Press

Rough day vs. Padres Teng (1-2) took the loss Wednesday against San Diego, allowing seven runs (six earned) on four hits and four walks over 1.2 innings.

Impact After tossing a scoreless first inning, Teng unraveled in the second, allowing six straight batters to reach after recording the first out. It's a disappointing showing from Teng, who held the Nationals scoreless over five innings in his last appearance. With Landen Roupp (elbow) expected to rejoin the Giants' rotation Friday, Teng will likely head back to Triple-A or assume a bullpen role.

AUGUST 14, 2025 • ROTOWIRE

Rough day vs. Padres Teng (1-2) took the loss Wednesday against San Diego, allowing seven runs (six earned) on four hits and four walks over 1.2 innings.

Impact After tossing a scoreless first inning, Teng unraveled in the second, allowing six straight batters to reach after recording the first out. It's a disappointing showing from Teng, who held the Nationals scoreless over five innings in his previous appearance. With Landen Roupp (elbow) expected to rejoin the Giants' rotation Friday, Teng will likely head back to Triple-A or assume a bullpen role.

AUGUST 14, 2025 • ROTOWIRE

Nick Pivetta and Ramón Laureano lead Padres to 11-1 win over Giants for 3-game sweep

Nick Pivetta allowed one run in 6 2/3 innings and Ramón Laureano had three of the Padres’ 14 hits as San Diego completed a three-game sweep of the San Francisco Giants with an 11-1...

AUGUST 13, 2025 • Associated Press

Schmitt leads Giants against the Padres after 4-hit outing

The San Francisco Giants play the San Diego Padres after Casey Schmitt had four hits against the Padres on Tuesday

AUGUST 13, 2025 • Associated Press

Starting Wednesday Teng will draw the start in Wednesday's contest against the Padres, Shayna Rubin of the San Francisco Chronicle reports.

Impact Teng will return to the mound to make his second start of the season with San Francisco. The right-hander worked behind opener Matt Gage in Friday's win over the Nationals, tossing five scoreless innings while striking out four batters. Over two outings, Teng owns a 5.40 ERA and 1.32 WHIP with eight punchouts over 8.1 innings, and he'll look to step up to the challenge against an impressive Padres group.

AUGUST 12, 2025 • ROTOWIRE

Works well behind opener Teng (1-1) allowed three hits and a walk while striking out four over five shutout innings to earn the win over the Nationals on Friday.

Impact Teng took the hill in the second inning after a perfect frame from opener Matt Gage. It was a good overall effort from the Giants' pitching staff, with Teng standing out with an efficient 64 pitches (42 strikes) during his outing. He rebounded from allowing five runs over 3.1 innings versus the Mets in his season debut last Saturday. Teng is likely to get another turn through the rotation, as Landen Roupp (elbow) is nearing a rehab assignment, which may only need to be one start. Should Teng get another turn, he's tentatively projected to face the Padres at home, though it's unclear whether he'll start or work behind an opener.

AUGUST 9, 2025 • ROTOWIRE

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