8:12pm: The teams announced the deal, which also sends an undisclosed amount of international bonus money to the Giants.
7:51pm: The Giants and Astros are in agreement on a trade that’ll send swingman Kai-Wei Teng to the Astros for catching prospect Jancel Villarroel, reports Chandler Rome of The Athletic. San Francisco needed to create a 40-man roster spot in order to finalize their two-year deal with Harrison Bader. It appears a Teng trade will be that corresponding move. Houston designated J.P. France for assignment to open a roster spot.
Teng, a Taiwanese-born righty, has made 12 MLB appearances over the past two seasons. They haven’t gone well, as he has been tagged for 7.30 earned runs per nine across 40 2/3 innings. Teng has managed a solid 23.7% strikeout rate but has been plagued by a lack of command. He has walked nearly 13% of opponents and plunked eight more (4.1%). That’s far too many free passes around which to work even with decent swing-and-miss stuff.
The 27-year-old has shown a similar approach in the minors, though he’s coming off a much better season in Triple-A. He worked mostly in a relief role and managed a 3.63 ERA behind a fantastic 37.1% strikeout percentage across 57 innings. Teng trimmed his walk rate to 9.2% at the level last season, but he has walked at least 10% of opponents at every other stop since he was in Low-A.
Teng throws five pitches and sits in the 93 MPH range with his four-seam fastball and sinker. A mid-80s sweeper is his preferred secondary pitch and got good results in a small sample of big league work. Teng has a couple minor league options remaining and can work as rotation depth or in long relief. The Astros evidently preferred his higher swing-and-miss ceiling to France after the latter has battled shoulder issues for a couple seasons.
San Francisco has a deeper rotation mix than Houston does. Teng, whom they non-tendered after the ’24 season before re-signing to a minor league deal, was a candidate to again be designated for assignment. It’s a nice bit of business to acquire a prospect for a pure depth arm. Villorroel, a 5’8″ backstop out of Venezuela, ranked as Houston’s 20th-best prospect at Baseball America. That comes with a caveat that the Astros’ system is as thin as any in the league.
The 20-year-old Villarroel is coming off a solid .259/.351/.388 line with eight homers in 100 games in A-ball. He walked at a 10.4% rate while striking out roughly 18% of the time. He also stole 20 bases in 27 attempts, though he’s unlikely to be a huge threat on the bases as he climbs the minor league ladder. Baseball America credits him with advanced pure hitting ability and plus arm strength, though his strike zone discipline and finer defensive skills are works in progress. He’s a development flier who appears to project as a future backup.
