Leach played college ball at Auburn University, and was originally drafted by the Boston Red Sox in January, but the pick was voided. At which point, he signed with the unaffiliated Baton Rouge Cougars of the Gulf States League. With the Cougars, he was 2-0 with a 6.16 earned run average in five games. A year later, he signed with the Atlanta Braves as an undrafted free agent. With the Greenwood Braves, Leach went 3-2 with a far more respectable 2.55 ERA in. Leach went 19-23 as a minor leaguer in the Braves' farm system when he was released by the Braves July 23,. On July 27, he signed as a Free Agent with the New York Mets. After a season and a half in the minors with the Mets organization, he made his major league debut at Wrigley Field on August 12,. With the Mets leading 4-2 over the Chicago Cubs, Leach surrendered a two run home run to Mike Lum, tying the game. The Mets, however, came back to win the game in extra innings, 7-4. Leach made only one start with the Mets in ; it was, however, one of the greatest pitching performances in franchise history. Rick Ownbey was scheduled to start on October 1, the second to last day of the season. A blister on his throwing hand forced Mets managerGeorge Bamberger to start Leach in his place. Leach ended up tossing a ten inning one-hitter against the Philadelphia Phillies; the only hit being a fifth inning triple by Luis Aguayo. Despite ending the season on a high note, Leach spent all of in the minors. At the end of the season, he was dealt to the Chicago Cubs for two minor leaguers. At the start of the season, he was dealt back to the Atlanta Braves for fellow minor league journeyman pitcher Ron Meridith. A month later, he was released; the following day, the Mets re-signed him.
He split between the Mets and Tidewater Tides, and was essentially a minor leaguer again in, making only six appearances with the Mets during their World Championship season. Despite the fact that he spent much of 1986 in the minors, he was given a World Series ring in 1995, nine years after the series. Leach did not allow a run in Spring training, but was still cut in the final week and sent back to the minors. However, Dwight Gooden's stint in a drug rehabilitation center coupled with Bob Ojeda being out for the season-ending surgery, opened a spot in the rotation for Leach. Leach responded with an 11-1 record and ten consecutive wins. Pitching exclusively out of the bullpen again a season later, Leach went 7-2 with a 2.54 ERA and three saves. In the 1988 National League Championship Series against the Los Angeles Dodgers, he pitched five innings without giving up a run.
In June, the Mets traded Leach to the Kansas City Royals for Aquedo Vasquez. He went 5-6 with a 4.15 ERA in his only season in Kansas City. He was released during Spring training the following season, and caught on with the Minnesota Twins. In, he made his second trip to the post season while with the Twins, and made two appearances in their World Series victory over the Atlanta Braves.
Leach became a free agent after the Series, and signed with the Montreal Expos. The Expos released him during Spring training, and he signed with the Chicago White Sox. In, Leach was 6-5 with a 1.95 ERA for the ChiSox. He split between the White Sox, their double-A affiliate and their triple-A affiliate. He was released during spring training in and after a year away from the game he retired for good after a failed attempt to make the Detroit Tigers in.
Author
In, Leach wrote his autobiography, Things Happen for a Reason: The True Story of an Itinerant Life in Baseball with Tom Clark.
