Michael Bruce Warren
- Bats Right, Throws Right
- Height 6' 1", Weight 175 lb.
- High School Fullerton (CA) High School
- Debut June 12, 1983
- Final Game July 2, 1985
- Born March 26, 1961 in Inglewood, CA USA
Mike Warren was selected in the 12th round of the 1979 amateur draft by the Detroit Tigers. Between his selection and his major-league debut in May, 1983, Warren was involved in a series of transactions involving the Oakland Athletics: released in April 1982 by the Tigers, signed shortly thereafter by the Athletics, then taken by the Milwaukee Brewers on December 1981 in the minor league phase of the 1981 Rule V Draft. On May 14, 1982, the Brewers sent him back to the A's via trade, getting infielder Rob Picciolo in return.
A little over a year later, Warren made his big-league debut at the Oakland Coliseum against the Chicago White Sox as a reliever, but would go on to make the majority of his 12 appearances as a member of the A's starting rotation. His final start of the season (September 29) was the most notable: he tossed a no-hitter against the same team he debuted against, the White Sox, striking out five and walking three. The no-no was the 12th in Athletics franchise history, and the fifth since the club moved to Oakland in 1968.
All told, Warren finished his rookie campaign 5-3 with a 4.11 earned run average.