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2026 Fantasy Baseball Player Profile
Quinn Mathews experienced a challenging "sophomore slump" in 2025 that tempered the massive expectations set by his historic 2024 campaign. After leading the minor leagues in strikeouts the previous year, the 25 year old left hander struggled with both health and command during his first extended look at Triple A Memphis. A mid April diagnosis of left shoulder inflammation sidelined him for six weeks and coincided with a noticeable dip in his average fastball velocity, which fell from his 95 mph peak back into the low 90s. Even after returning, Mathews battled significant control issues, issuing 74 walks across 94 innings and finishing the year with a 1.60 WHIP. However, he offered a glimmer of hope by finishing the season on a high note, posting a 2.70 ERA and a much improved strikeout to walk ratio over his final three starts in September.
Entering 2026, Mathews is healthy and has been one of the primary "buzz" players in Cardinals spring training. Attending camp as a non-roster invitee for the second consecutive year, he has reportedly reclaimed his lost velocity and has impressed manager Oli Marmol with his refined changeup and a newly added two seam fastball. While he is unlikely to crack the Opening Day roster and will likely return to Memphis to prove his command has stabilized, he remains a critical "X-factor" for a rebuilding St. Louis rotation. For fantasy managers, Mathews is a high upside stash in dynasty formats and a late round lottery ticket in deeper redraft leagues. If he can maintain the 94-96 mph heater he showed late last season, his elite "out pitch" changeup gives him the ceiling of a mid rotation starter who could debut by early summer.
