Giants Trade Pitcher Kai-Wei Teng to Astros for Prospect Villarroel

The San Francisco Giants have traded right-handed pitcher Kai-Wei Teng to the Houston Astros in exchange for minor league catching prospect Jancel Villarroel and international slot money. The move creates a 40-man roster spot for newly signed Harrison Bader. Teng, 27, made 12 appearances for the Giants over the past two seasons, including 7 starts in 2025, where he posted a 6.37 ERA in MLB but a strong 3.63 ERA in AAA with high strikeout rates. He will now get a chance to solidify his role with the Astros.