Kai-Wei Teng

Kai-Wei Teng (born December 1, 1998) is a Taiwanese professional baseball pitcher for the San Francisco Giants of Major League Baseball (MLB). He made his MLB debut in 2024. Teng stands at 188 cm (6 feet 2 inches) and weighs 113 kg (250 pounds). He currently plays for the Sacramento River Cats, the Triple-A affiliate of the San Francisco Giants.

Early life and education
Teng attended Shi Yuan Senior High School in Taichung before transferring to Kao-Yuan Vocational High School of Technology & Commerce in Kaohsiung. He enrolled at the National Taiwan Sport University.

Minnesota Twins
On October 20, 2017, the Minnesota Twins signed Teng for a $500,000 signing bonus. He made his professional debut with the rookie–level Gulf Coast League Twins in 2018, making 10 appearances (9 starts) and posting a 3.59 ERA with 47 strikeouts in $42 2⁄3$ innings pitched.

He began the 2019 season with the Cedar Rapids Kernels of the Single–A Midwest League, and was named the league's pitcher of the week for the week ending July 14. In 9 games for Cedar Rapids, Teng logged a 4–0 record and 1.60 ERA.

San Francisco Giants
On July 31, 2019, the Twins traded Teng, Jaylin Davis, and Prelander Berroa to the San Francisco Giants in exchange for Sam Dyson. He made five starts for the Single–A Augusta GreenJackets, recording a 1.55 ERA with 39 strikeouts across $39 2⁄3$ innings of work. Teng did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.

On June 2, 2021, while pitching for the High–A Eugene Emeralds, he was suspended for 10 games after umpires found a foreign substance in his glove. In 21 starts for Eugene, Teng recorded a 4.33 ERA with 142 strikeouts in $95 2⁄3$ innings of work. Teng spent the 2022 season with the Double–A Richmond Flying Squirrels, making 28 starts and registering a 6–12 record and 5.22 ERA with a career–high 169 strikeouts in $136 1⁄3$ innings pitched.

Teng began the 2023 season back with Double–A Richmond, starting 12 games and posting a 4.75 ERA with 68 strikeouts in $47 1⁄3$ innings of work. On June 18, 2023, he was promoted to the Triple–A Sacramento River Cats. In 17 games (16 starts) for Sacramento, Teng logged a 6–5 record and 4.22 ERA with 96 strikeouts across 76 innings pitched.

On November 14, 2023, the Giants added Teng to their 40-man roster to protect him from the Rule 5 draft. He spent some time in major league spring training, and was optioned to Triple–A Sacramento to begin the 2024 season. On March 29, 2024, Teng was promoted to the major leagues for the first time. Teng made his major league debut in relief of Daulton Jefferies, pitching three innings while yielding four hits and three runs.

International career
Teng played for the Taiwanese national team (Chinese Taipei) in the 2019 Asian Baseball Championship, pitching in the gold medal game against Japan, which Taiwan won. He is included on their roster for the 2023 World Baseball Classic.