Roberto Hernandez was a professional baseball player who played as a relief pitcher for various teams in the Major League Baseball (MLB) for over 17 years. He was born on November 11, 1964, in Santurce, Puerto Rico, and began his baseball career in the minor leagues in 1986.

Hernandez made his MLB debut in 1991 with the Chicago White Sox, where he played for four seasons. He then played for the San Francisco Giants, the Tampa Bay Devil Rays, the Kansas City Royals, the Atlanta Braves, the Pittsburgh Pirates, the Philadelphia Phillies, the New York Mets, and the Cleveland Indians.

Throughout his career, Hernandez was known for his ability to throw a variety of pitches, including a fastball, a slider, and a changeup. He was also known for his durability and consistency, as he appeared in over 1,000 games and recorded over 300 saves.

One of Hernandez's most memorable moments came in the 1997 season when he was playing for the Tampa Bay Devil Rays. He recorded 43 saves that season, which was a franchise record at the time. He also helped lead the Devil Rays to their first-ever playoff appearance in 2008.

Hernandez retired from baseball in 2007 with a career record of 67-71, an ERA of 3.45, and 326 saves. He was a two-time All-Star and won a World Series championship with the White Sox in 2005.

After retiring from baseball, Hernandez became a special assistant to the general manager for the Cleveland Indians. He also worked as a color commentator for the Tampa Bay Rays and the Miami Marlins.

In addition to his baseball career, Hernandez was known for his charitable work. He established the Roberto Hernandez Foundation, which provides scholarships and other resources to underprivileged children in Puerto Rico.

Overall, Roberto Hernandez had a successful career as a relief pitcher in the MLB. He was known for his versatility, durability, and consistency, and he helped lead several teams to success throughout his career.