Cubs Sign Righty Corbin Martin to Minor-League Deal

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In their latest bid to add depth and upside to their bullpen mix, the Cubs signed right-handed pitcher Corbin Martin to a minor-league deal. The agreement includes an invitation to big-league spring training, where Martin will compete for a job in the bullpen for a Cubs team still piecing depth back together after an autumn exodus from their relief unit.

Martin, 30, is perhaps best known as one of the key pieces of the trade that sent Zack Greinke from the Diamondbacks to the Astros in 2019. Major injuries have derailed a once-promising career, keeping him off the mound for all of 2020 and 2023 and for long stretches of 2021 and 2024. Fully converted to relief work, he reemerged as an intriguing arm in 2025, with a fastball that sat just over 95 miles per hour and had the cut-ride shape the Cubs love from pitchers of his ilk. To it, he adds a hard cutter and a sharp 12-to-6 curveball that dramatically improved after he changed his grip and the pitch's shape midseason. Previously, he'd thrown a pitch much more akin to a sweeper or slurve, but this version of the offering is better.

The cutter sits 91-92 on the gun, so it's a firm pitch with little movement or velocity separation from the fastball. By leading with those two pitches, though, he sets up the curveball well. Despite ugly raw numbers, he put up a 94 DRA- at Triple-A Norfolk and in the majors for the Orioles in 2025. He comes with four years of team control, if things pan out especially well, but he does not have any minor-league options remaining, so if he makes the team, he'll need to stay on the active roster or the injured list or be exposed to waivers.

As fliers like these go, Martin is a solid one. His velocity and shape on the three key pitches in his arsenal promise some better results on contact, and he can miss bats. The question will be whether he can throw enough strikes to ensure that that matters; walks have haunted him over the last two seasons.

A healthy Martin showing a semblance of command could be a strong contributor to the Cubs' middle-relief corps. For now, this is just a bit of spaghetti to throw against the wall, but as was true of Brad Keller last winter, there's more than the usual amount of reason to admire the fit and hope that this piece sticks.