Juan Agosto was a left-handed pitcher who played in Major League Baseball for 13 seasons. He began his career with the Houston Astros in 1981 and played for several teams throughout his career, including the Seattle Mariners, Chicago White Sox, Milwaukee Brewers, and St. Louis Cardinals.

Agosto was primarily used as a relief pitcher and was known for his ability to get left-handed batters out. He had a career record of 39-47 with a 4.28 ERA and 28 saves. He appeared in 732 games, which ranks him 29th all-time among left-handed pitchers.

One of Agosto's most memorable moments came in the 1986 American League Championship Series when he pitched for the Boston Red Sox. In Game 5, he came in to relieve Roger Clemens and pitched 2 2/3 scoreless innings to help the Red Sox win the game and take a 3-2 series lead. However, the Red Sox would go on to lose the series to the eventual World Series champion, the New York Mets.

Agosto retired from baseball after the 1993 season and has since worked as a pitching coach in the minor leagues. He also runs a baseball academy in his native Puerto Rico, where he helps young players develop their skills and learn the game.

Overall, Juan Agosto had a solid career as a left-handed relief pitcher in Major League Baseball. While he may not have been a household name, he was a reliable and effective pitcher who contributed to several teams throughout his career.