Mike Henneman was a professional baseball player who played as a relief pitcher for various teams during his career. He was born on December 11, 1961, in St. Charles, Missouri, and attended Oklahoma State University. Henneman was drafted by the Detroit Tigers in the fourth round of the 1984 Major League Baseball draft and made his debut in the major leagues in 1987.

Henneman played for the Detroit Tigers for the majority of his career, from 1987 to 1995. He was known for his fastball and slider pitches, which he used to strike out batters. In 1989, he had a breakout season, recording 21 saves and a 1.87 ERA. He was named to the American League All-Star team that year and finished fifth in the Cy Young Award voting.

Henneman continued to be a reliable closer for the Tigers throughout the early 1990s, recording 25 saves in 1990 and 21 saves in 1991. He also had a career-high 29 saves in 1993. In 1995, he was traded to the Houston Astros, where he played for one season before being released.

After his release from the Astros, Henneman signed with the Texas Rangers for the 1997 season. He played in 47 games for the Rangers, recording 11 saves and a 4.91 ERA. He retired from baseball after the 1997 season.

Throughout his career, Henneman recorded 193 saves and a 3.21 ERA. He was known for his durability and consistency as a relief pitcher. He also had a reputation for being a good teammate and a positive influence in the clubhouse.

After retiring from baseball, Henneman returned to his hometown of St. Charles, Missouri, where he became a high school baseball coach. He also worked as a scout for the Detroit Tigers and as a color commentator for the Oklahoma State University baseball team.

In conclusion, Mike Henneman was a successful relief pitcher who played for various teams during his career. He was known for his fastball and slider pitches, as well as his durability and consistency on the mound. After retiring from baseball, he became a high school baseball coach and worked as a scout and commentator.