Tanner Rainey’s time with the Detroit Tigers has come to an end.
The veteran reliever has elected free agency ahead of the offseason, according to Evan Woodbery of MLive.com, after spending parts of two seasons in the organization. Rainey joined Detroit in 2025 and made eight appearances for the club, putting up a 6.00 ERA. In 2026, he was better in a smaller sample, working to a 3.86 ERA across eight outings.
Rainey’s exit comes after Detroit designated him for assignment on the final day of August. He cleared waivers, was sent to Triple-A Toledo, and finished the year there. Because he’s a veteran, he had the option to choose free agency instead of staying in the minors with the Tigers.
In Toledo, Rainey logged 45 appearances in 2026 and posted a 3.40 ERA, striking out 67 and walking 29. That kind of production should keep him on the radar for another club this winter, and a return to the Washington Nationals is a possibility, since they need help in the back end of their bullpen.
Detroit’s bullpen situation makes the move easy to understand. The Tigers entered 2026 expecting Will Vest, Kyle Finnegan, and Kenley Jansen to anchor the late innings, but that group struggled badly.
The bullpen’s blown leads were part of the story in a 76-86 season, even though Detroit was solid at Comerica Park with a winning record in 81 games. The road results, though, dragged the team down and made bullpen upgrades a priority for 2027 and beyond.
With Drew Sommers, Ty Madden, and Andrew Sears representing the younger wave in the relief mix, Rainey no longer fit the picture. He’s a 2019 World Series winner and, by the numbers, not a bad pitcher. But the fit in Detroit wasn’t there anymore, and both sides now move on.
For the Tigers, his departure also gives Scott Harris and company a little more financial breathing room as they look to strengthen the bullpen this offseason. There should be plenty of relievers available once the postseason ends, and Detroit figures to be in the market.
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