Giants Bring In Tyler Mahle, Likely Rounding Out Rotation

The San Francisco Giants were expected to be one of the higher spenders heading into this offseason. There was a clear need for improvement all over the pitching staff, while second base and right field could have used an increase in production as well.

So far, that hasn’t been the case. While there’s still over a month until spring training, it’s been quiet in San Francisco for the majority of the winter.

Outside of some minor bullpen additions, the only real moves have been adding two back-end rotation arms. Adrian Houser and, more recently, Tyler Mahle, are the two most notable additions to the Giants’ roster.

While fans may be disappointed in the quality of the arms that Buster Posey has opted to add to the rotation, they do offer affordability with a decent amount of upside.

Giants Ink Tyler Mahle to One-Year Deal

Mahle is quietly coming off the best season of his career in terms of run prevention. In 16 starts, he posted a 2.18 ERA and 0.52 home runs per nine innings, which was the fourth-best mark in baseball among starters who threw at least 60 innings.

Mahle’s impressive season came under former Giants manager and now special advisor to the president Bruce Bochy, who appears to be part of the reason for his signing with San Francisco.

It’s one thing to see it in a text message or on a phone call. It’s quite another to sit across from a Hall of Fame manager [Bochy] and hear them say, ‘I really believe in this guy.’

-Giants GM Zack Minasian via Alex Pavlovic of NBC Sports Bay Area

The one thing missing in Mahle’s 2025 was a surplus of innings, which he has only provided once in his big league career. From 2023 to 2025, he’s combined for just 123.6 frames.

That’s a steep drop from the guy at the top of the rotation, Logan Webb, who just became the first starter to throw 200 innings in three consecutive seasons since Justin Verlander in the late 2010s.

However, in the one season in which Mahle was available for every start, he was nails. In 2021, he hurled 180 innings (33 starts) with a 3.75 ERA while accumulating 3.9 fWAR. It was his most valuable season by far and the only one where he surpassed 130 innings and 26 starts in his career.

Surely, the Giants are hoping that the injury bug that has constantly hurt Mahle is gone and they receive something similar to the 2021 version of the now 31-year-old.