Logan Webb Is Locked In But The Giants Rotation Battle Isn't

With Logan Webb cemented as the Giants' ace through 2028, the team faces tough questions about the rest of their evolving rotation for the 2027 season.

Logan Webb is the one certainty in the Giants’ 2027 rotation. After that, the picture gets murky fast.

San Francisco made it clear at the trade deadline that Webb wasn’t going anywhere, and that stance hasn’t changed. He remains one of the franchise’s untouchables, and with his contract running through 2028, the Giants can count on their ace being on the mound on opening day in 2027.

The rest of the staff, though, is much harder to pin down. Several of the candidates are expected to be delayed by elbow injuries that required surgery, and that alone makes this a rotation in flux as the Giants head into a critical offseason.

Webb’s 2026 season was not his usual standard. He spent time on the injured list twice with minor injuries, and the second stint ended his year.

In 27 starts, he went 8-9 with a 4.31 ERA, striking out 134 and walking 41 across 160.2 innings. For the first time since 2021, when he went 11-3 with a 3.03 ERA in his breakout year, he’s likely to go without a Cy Young vote.

Still, Webb is locked in for opening day, and beyond him the Giants are left sorting through a wide-open competition. They’ll probably look for bargain free agents, but based on the current roster, the early projection starts with Landen Roupp in the No. 2 spot.

Roupp handled a full season in the rotation and finished 9-14 with a 4.01 ERA over 155 innings. He struck out 143 and walked 75, and that’s the issue that stands out.

His walk rate - 4.4 per nine innings - has to come down, and he still hasn’t shown the kind of strikeout rate you want from a true top-of-the-rotation complement. He gave the Giants innings, sure.

But a No. 2 starter has to be more than that.

The strongest push for a rotation job may come from Carson Seymour, who was just named Pacific Coast League pitcher of the year. Seymour went 5-2 with a 3.79 ERA in 22 games, including nine starts, for Triple-A Sacramento. He struck out 70 and walked 31 in 76 innings, then saw big-league action as a reliever, posting a 4.55 ERA in 25 games with one start while striking out 23 and walking 16 in 31.2 innings.

He was developed as a starter in the minors, and the Giants need to give him a real shot to return to that role. That becomes even more important with Carson Whisenhunt recovering from an elbow injury.

Adrian Houser is another name in the mix. He was shut down late in the year with a right flexor strain, but the expectation is that he’ll be ready for spring training.

If that holds, he’ll be part of the competition rather than handed a spot. Houser is on a two-year deal that runs through 2027, and he finished this past season 4-7 with a 4.02 ERA in 26 games, 16 of them starts.

He struck out 75 and walked 34 in 109.2 innings.

Then there’s Anthony Molina, who turned heads after arriving from the Atlanta Braves in the Tyler Mahle trade. In six games with the Giants, five of them starts, he went 3-2 with a 3.72 ERA, striking out 29 and walking six in 29 innings. Atlanta used him as a reliever, but he looked comfortable starting for San Francisco, and with so many injury questions still hanging over the staff, he can’t be ruled out at all for 2027.

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