Michael Joseph Fulmer (born March 15, 1993) is an American professional baseball pitcher in the Boston Red Sox organization.

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

[3][4] He made his professional debut that season with the rookie league Gulf Coast Mets, where he had a 0–1 record with a 10.13 ERA and 10 strikeouts in four appearances, three of them starts.

[14] On May 21, Fulmer had his first home start at Comerica Park in Detroit, where he gave up just one earned run and recorded 11 strikeouts over seven innings, defeating the Tampa Bay Rays.

Fulmer became the first Detroit Tigers rookie pitcher to strike out 11 opposing batters in one game since Pat Underwood in 1979.

Fulmer became the first pitcher in Tigers history to pitch three consecutive scoreless outings of six innings or more while allowing three or fewer hits.

Fulmer became just the second pitcher in Major League history to pitch four consecutive scoreless outings of six innings or more while allowing three or fewer hits, joining Jake Arrieta.

[18] On July 1, Fulmer pitched seven scoreless innings against the Tampa Bay Rays, allowing only two hits and striking out ten.

[24][25] For the first half of the 2017 season, Fulmer went 9–6 with a 3.19 ERA and 13 quality starts, earning him his first American League All-Star selection.

[29] On September 11, it was announced that Fulmer would undergo elbow surgery for ulnar nerve transposition, ending his season.

After pitching to a 3–9 record, with a 4.50 ERA prior to the 2018 All-Star break, Fulmer was placed on the 10-day disabled list July 20 with a left oblique strain.

[31] In his final start of the season on September 15, against the Cleveland Indians, he left the game without recording an out, after allowing two home runs on five pitches.

[33][34] On March 19, the Tigers announced that they had recommended season-ending Tommy John surgery for Fulmer after he experienced elbow pain during a bullpen session.

[36] Fulmer was medically cleared to be a full participant in the Tigers' delayed (July) spring training for the 2020 season.

He won his first 2021 start on April 14, allowing two runs and three hits over five innings as the Tigers defeated the Houston Astros, 6–4.

[42] Fulmer was soon returned to the bullpen, and recorded his first career save in an extra-innings win over the Boston Red Sox on May 6.