The San Francisco Giants appear to have locked in their starting rotation for 2025, and while it might not turn heads around the league, it’s a group that could quietly keep the team competitive-if it stays healthy. That’s a big “if,” considering the collective injury history of this bunch. Still, with the recent addition of right-hander Tyler Mahle on a one-year deal struck on New Year’s Eve, the Giants now have five established arms under contract heading into the new season.
Here’s how the rotation currently stacks up:
- Logan Webb (R)
- Robbie Ray (L)
- Tyler Mahle (R)
- Landen Roupp (R)
- Adrian Houser (R)
Webb is the unquestioned ace here, and rightfully so. He’s the workhorse, the tone-setter, and the one guy in this group without a recent medical file the size of a scouting report.
The rest? Let’s just say durability is going to be a storyline to watch all season.
Mahle’s signing gives the Giants a high-upside arm with something to prove. He’s shown flashes when healthy, and if he can stay on the mound consistently, he could be a sneaky solid mid-rotation piece.
Robbie Ray, meanwhile, brings a left-handed balance and Cy Young pedigree-but he’s also coming off a significant injury and will need to show he can bounce back to form. Roupp and Houser round out the group, both righties with potential, though neither is a lock to go deep into the season without some bumps along the way.
Could the Giants still make another move? Technically, sure.
But don’t expect any blockbuster additions. They’ve been out of the running for top-tier names like Framber Valdez and Ranger Suárez for a while now, and with Tatsuya Imai landing in Houston, the international market has largely dried up for frontline options.
A veteran like Max Scherzer could make sense as a depth piece if the price and fit are right, but for now, the Giants seem content to roll with what they’ve got.
Behind the starting five, there’s a crowd of young arms preparing for what could be a revolving-door season in the back end of the rotation. Names like Hayden Birdsong, Blade Tidwell, Carson Whisenhunt, Trevor McDonald, Carson Seymour, Kai-Wei Teng, and Keaton Winn are all in the mix to soak up innings when-let’s be honest-not if the injury bug bites.
And it will. Last season, the Giants had to dig deep into their pitching depth.
Logan Webb led the way with 34 starts, followed closely by Robbie Ray with 32 and Justin Verlander with 29. Landen Roupp chipped in 22, while Birdsong and Jordan Hicks combined for 19.
Teng, Whisenhunt, Kyle Harrison, Seymour, McDonald, and a handful of others each took turns filling in. In total, 14 different pitchers started games, not including Matt Gage, who opened a couple of bullpen games.
Despite the constant rotation, the Giants’ staff still managed to finish 11th in the Majors in fWAR (12.2), 17th in ERA (4.10), and an impressive 2nd in FIP (3.73). That tells us a few things.
First, the underlying performance was better than the surface numbers might suggest. Second, the defense and bullpen may not have always helped out.
And third, even with all the moving parts, the rotation held its own.
So how does the 2025 version stack up? At first glance, it feels like a middle-of-the-pack group.
There’s no overpowering ace beyond Webb, and the rest of the rotation comes with question marks. But there’s also a decent floor here if everyone stays on the field.
It’s not the kind of rotation that screams “October baseball,” but it’s not one that will sink the season either.
“Middling” might not be the most exciting word in baseball, but in a long 162-game grind, it can be enough to keep you in the hunt-especially if the offense and bullpen take a step forward. The Giants may not have made the biggest splash this offseason, but they’ve quietly assembled a rotation that could surprise, provided the pieces stay intact.
