Tanner Rainey Enters Free Agency After Tigers Stint

Detroit Tigers reliever Tanner Rainey elected free agency on October 2, 2026 after the right-hander spent two seasons in the organization, ending his bid for a regular MLB bullpen role as Detroit reshapes its pitching staff for 2027.

According to thebiglead.com, Rainey made six MLB appearances for Detroit in 2026, posting a 3.86 ERA across seven innings with three earned runs allowed and six strikeouts.

According to NBC Sports, Rainey recorded a 1.57 WHIP and a 6/8 strikeout-to-walk ratio during his seven innings with the Tigers. His command issues limited his major league opportunities.

Rainey spent most of 2026 with Triple-A Toledo, where according to thebiglead.com he pitched 47⅔ innings in 45 appearances and posted a 3.40 ERA with 67 strikeouts.

According to Yardbarker, Rainey was designated for assignment by Detroit on August 31 and sent outright to Triple-A Toledo on September 2 after clearing waivers.

The 33-year-old had the option to reject the assignment because of his major league service time, but he remained with the organization before becoming a free agent after the season.

According to Heavy, Rainey finished his MLB career line with a 5-11 record, a 5.46 ERA and 253 strikeouts across 217 games over nine seasons with the Cincinnati Reds, Washington Nationals, Pittsburgh Pirates and Tigers.

Rainey built his reputation with Washington, where according to Yardbarker he won a World Series championship in 2019 and later recorded 12 saves in 2022 as a closer.

The right-hander's career was affected by Tommy John surgery in 2022 and recurring control problems. Detroit signed him to minor league opportunities after his release from Pittsburgh before the 2026 season.

According to Yardbarker, Rainey showed strong strikeout ability in Toledo before his call-up, but he also issued walks at a high rate. His next opportunity is expected to come through the free agent market.