Who’s lighting up the radar gun at the SF Giants camp? That honor goes to non-roster invitee Gregory Santos, clocking in at a blistering 99.2 MPH. This isn’t just a stat to glance over; it’s a key piece in the puzzle as the Giants look to solidify a bullpen that’s full of question marks.
The bullpen’s composition is still up in the air, with contract status, minor league options, and 2026 expectations all playing a role. JT Brubaker is the only lock with a guaranteed contract for 2026, thanks to a deal tendered in the offseason. He’s shown solid form in the Cactus League, with three earned runs over six innings, striking out four and walking four.
Beyond Brubaker, the rest of the bullpen candidates are either pre-arbitration or on minor league deals. José Buttó and Matt Gage are out of options, meaning they’ll need to clear waivers if they don’t make the roster. Gage, being one of the few healthy lefty relievers, has a strong chance to stick around.
Buttó, with a 3.56 ERA over four major league seasons, offers a starter’s pitch mix but struggles with strikeouts and walks. He’s likely to start the year with the team, but his leash might be short if he falters.
The Giants have high hopes for Ryan Walker and Erik Miller. Miller, slowed by a back issue, should be back in action soon. Spencer Bivens, with minor league options, might find himself on the outside looking in despite his potential as a bulk innings reliever.
Assuming Bivens makes the cut, the Giants would have six relievers, leaving two spots open. The bullpen seems heavy on middle relievers, lacking those key leverage arms.
That’s where Santos comes in. His velocity and power slider make him a prime candidate for high-leverage situations, provided he stays healthy.
Santos has a career 4.17 ERA and 3.48 FIP, with a promising 2.48 SO/W rate. This spring, he’s been spotless in two appearances.
Alongside Santos, Caleb Kilian is also turning heads with a four-seamer averaging 97.6 MPH. For a bullpen in need of some heat, Kilian’s velocity is a welcome sight.
As the Giants piece together their bullpen, Santos and Kilian’s performances could be crucial in shaping a formidable relief corps. Keep an eye on these flamethrowers as the season approaches.