Jose DeLeon was a professional baseball player who played as a pitcher in the Major League Baseball (MLB) for over a decade. He was born on December 20, 1960, in Rancho Viejo, Puerto Rico. DeLeon started his professional career in 1979 when he was signed by the Pittsburgh Pirates as an amateur free agent. He spent several years in the minor leagues before making his MLB debut in 1983.

DeLeon played for several teams during his career, including the Pittsburgh Pirates, Chicago White Sox, St. Louis Cardinals, Philadelphia Phillies, and New York Yankees. He was known for his fastball, which he could throw at speeds of up to 95 miles per hour, as well as his curveball and slider.

DeLeon's best season came in 1989 when he was playing for the Cardinals. He had a record of 16-12 with an earned run average (ERA) of 3.05 and 201 strikeouts. He was named an All-Star that year and finished fourth in the National League Cy Young Award voting.

Throughout his career, DeLeon struggled with control issues, which led to high walk rates and a high number of hit batters. He also had a tendency to give up home runs, which hurt his overall performance. Despite these challenges, he was able to have a successful career and was known for his competitiveness and work ethic.

DeLeon retired from baseball in 1995 with a career record of 86-119 and an ERA of 4.14. He had 1,444 strikeouts and 1,034 walks in 1,758 innings pitched. After retiring, he worked as a pitching coach for several minor league teams and also served as a special assistant to the general manager for the Cardinals.

In addition to his baseball career, DeLeon was also known for his charitable work. He founded the Jose DeLeon Foundation, which provides scholarships and other support to underprivileged children in Puerto Rico. He also worked with the Boys and Girls Club and other organizations to help young people in his community.

Overall, Jose DeLeon had a successful career as a professional baseball player, despite facing several challenges along the way. He was known for his competitiveness and work ethic, as well as his charitable work off the field.