As a member of the Giants, he won the 1994 Willie Mac Award honoring his spirit and leadership.
Personal life
Mark's brother, Al Leiter, was a major-league pitcher from 1987 to 2005, and his son, Mark Leiter Jr., has also pitched in MLB. Mark was traded to the New York Yankees on July 30, 2024. His nephew, Jack Leiter, is currently with the Texas Rangers farm.
Leiter's 9-month-old son Ryan died of spinal muscular atrophy in 1994. He and his first wife, Allison, started the Ryan Leiter Fund to raise funds for families of victims of the disease.[3]
^Trutor, Clayton. Mark Leiter, Society for American Baseball Research. Accessed July 30, 2019. "Raised on the Jersey Shore, Leiter graduated from Central Regional High School in Bayville, New Jersey, in 1981. He starred on the baseball team along with his brother Al, who was a freshman during Mark’s senior year, and classmate Jeff Musselman, who later pitched for the Blue Jays and Mets (1986-1990)."