"Mattison, 26, was a fourth-round pick by Detroit back in 2021. After spending most of his collegiate career as a starter, he moved to the bullpen upon joining the Tigers organization. While it took time for the righty to adjust to his new role, a strong performance in the Arizona Fall League at the end of his first pro season helped set him on course to take a bigger step forward during the 2023 campaign."
"Unfortunately, Mattison's ascent was put on hold when he underwent Tommy John surgery just before the 2024 campaign began. He missed the entire year and did not return to the mound until May 28 of this year. After two months of rehab, the right-hander was finally promoted to Triple-A on July 30 but posted middling results for the Mud Hens upon his arrival in Toledo. Across 20 appearances, Mattison posted a 3.79 ERA with an alarming 17.4% walk rate."
"The decision to non-tender Mattison was largely motivated by a desire to no longer carry the righty on the club's 40-man roster. As a player who has not yet made his big league debut, Mattison was of course not yet eligible for arbitration and wouldn't be making more than the league minimum. Still, that roster spot was valuable and would have forced the Tigers to use one of Mattison's option years to send him back to the minors."
Tyler Mattison re-signed with the Detroit Tigers on a minor-league deal that includes a non-roster Spring Training invite and a $835,000 major-league salary. Mattison, a 26-year-old fourth-round pick in 2021, transitioned from collegiate starter to professional reliever and excelled in the Arizona Fall League. He reached Double-A in 2023, posting a 1.62 ERA in 33 1/3 innings as a multi-inning reliever. Mattison underwent Tommy John surgery before 2024, missed that season, and returned in May. A July promotion to Triple-A produced a 3.79 ERA and a 17.4% walk rate, prompting the Tigers to non-tender him to clear a 40-man roster spot.
Read at MLB Trade Rumors
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