Stephen Joseph Gromek (January 15, 1920 – March 12, 2002) was an American right-handed pitcher in Major League Baseball who played for 17 seasons in the American League with the Cleveland Indians and Detroit Tigers. In 447 career games, Gromek pitched 2,064⅔ innings and posted a win–loss record of 123–108 with 92 complete games, 17 shutouts, and a 3.41 earned run average (ERA).

Born in Hamtramck, Michigan, Gromek originally began playing professionally with the Indians organization as an infielder, but became a pitcher early on, and made his major league debut in 1941. He played sparingly his first three years before becoming an everyday starter in 1944 and 1945, earning his lone All-Star appearance in the latter year. After the war ended, he became a spot starter, spending time as both a starting pitcher and relief pitcher. Gromek was the winning pitcher in game four of the 1948 World Series with the Cleveland Indians. His career is best remembered for a post game celebratory photo taken of him hugging Larry Doby, the first black player in the American League, whose third inning home run provided the margin of victory. The photo became a symbol for integration in baseball.

Gromek remained in the spot starter role with the Indians until 1953, when he was traded to the Tigers. The Tigers used him solely as a starting pitcher, and had 18 wins in his first full season with them in 1954. He played two more full seasons with the Tigers, and retired during the 1957 season. Gromek then became a player-manager for the Erie Sailors for one year, became a car insurance sales representative after his retirement, and died in 2002.

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