Tyler Blinn Duffey (born December 27, 1990) is an American professional baseball pitcher who is a free agent.

He has previously played in Major League Baseball (MLB) for the Minnesota Twins, Chicago Cubs, and Kansas City Royals.

[4][5][6][7] He signed with the Twins[8] and pitched for the Cedar Rapids Kernels in 2013,[9] before receiving a promotion to the Fort Myers Miracle of the High–A Florida State League.

With the 2020 Minnesota Twins, Duffey appeared in 22 games, compiling a 1–1 record with 1.88 ERA and 31 strikeouts in 24.0 innings pitched.

Duffey made 40 appearances out of the bullpen for Minnesota in 2022, logging a 4.91 ERA with 39 strikeouts and 2 saves in 44.0 innings of work.

[25] He made 18 appearances for the Triple-A Iowa Cubs, posting a 4-0 record and 4.43 ERA with 24 strikeouts in 22+1⁄3 innings pitched.

On June 1, Duffey exercised the opt-out clause in his contract, giving the Cubs 48 hours to add him to their 40-man roster or grant him his release.

[28] After posting a 3.77 ERA in 36 appearances for Iowa, the Cubs selected Duffey's contract to the major league roster on October 1.

[9] Duffey married his high school sweetheart, Sarah Hutchins, on December 19, 2015, and they had their first child, a son, in 2020.

[35] On March 6, 2024, Duffey announced that he had recently undergone surgery to remove a cancerous mole from his left shoulder.