Giants’ GM Zack Minasian Discusses Rotation

The Giants finalized their one-year, $10MM contract with Tyler Mahle this afternoon. He’s their second short-term free agent rotation addition. They brought in Adrian Houser on a two-year, $22MM deal last month.

Mahle and Houser are back-end types rather than the top-of-the-rotation arm which many fans hoped the Giants would add when president of baseball operations Buster Posey called pitching the offseason focus. The team has consistently downplayed their desire to make expensive or long-term free agent commitments and their first couple moves align with that reluctance. Like every team, they’ll continue to keep an eye on the rotation market, but general manager Zack Minasian suggested the Mahle and Houser moves may complete the rotation.

“We’re very comfortable with the five that we have and then the bundle of arms behind them now to say that our depth is in a much better spot than it was at the beginning of the offseason,” Minasian told reporters (links via John Shea of The San Francisco Standard and Susan Slusser of The San Francisco Chronicle). “We’re happy with where we’re at. We’ll keep working at it but I do think this is a solid five-man rotation going into the spring.”

Mahle and Houser would slot alongside Landen Roupp as the back three starters behind Logan Webb and Robbie Ray. They have a number of intriguing but unproven younger arms who’d compete to be the first one up in the event of an injury. Trevor McDonald, Keaton Winn, Hayden Birdsong, Carson Whisenhunt, Carson Seymour and Blade Tidwell are all on the 40-man roster. Everyone in that group has minor league options remaining and/or could contribute in a multi-inning role out of the bullpen.

While it’s a deeper group than most clubs have, the Giants are arguably lacking at the top end of the staff. Webb is a true ace, of course, but Ray tailed off in the second half. He had a solid year overall, striking out nearly a quarter of opponents with a 3.65 ERA across 182 1/3 innings. His ERA spiked to 5.54 as his strikeout rate dropped by five percentage points after the All-Star Break.

Houser was in Triple-A at the beginning of last season. He had a fantastic ERA over 11 starts for the White Sox but struggled after a deadline trade to Tampa Bay. Mahle is coming off a 2.18 ERA over 16 starts for the Rangers, yet his 19.1% strikeout rate was well below the plus marks he posted early in his career with the Reds. The righty also hasn’t reached 25 starts in any of the past four seasons because of 2022 Tommy John surgery and shoulder issues in each of the last two years.

The Giants opened the 2025 season with a $173MM payroll. RosterResource estimates they’re around $185MM for next season. That doesn’t include a $17MM deferred signing bonus owed to Blake Snell which comes due next week. The Giants have yet to address a wide open right field spot or done anything to add a late-inning reliever after last summer’s Camilo Doval and Tyler Rogers trades and losing Randy Rodríguez to injury. They’re also poking around for an upgrade over Casey Schmitt at second base.

The payroll situation has seemingly taken them out of the mix for the top free agent starters. Trading Ray would offload most or all of his $25MM salary and create some short-term spending capacity if they wanted to upgrade the #2 starter spot, but that’d require a longer deal than their remaining one year commitment to Ray. (Framber Valdez, Ranger Suárez and Zac Gallen are the top unsigned starters.) Trading for a controllable starter like MacKenzie Gore and Edward Cabrera would require significant prospect capital. Even if the Giants turn to the trade market, they may focus more on the other needs and hope that Roupp and/or one of the unproven starters takes a step forward to raise the rotation’s ceiling.