Leiter was one of the most consistent pitchers of the 1990’s who elevated his game when the lights shined brightest. He won three World Series rings over his 19-year career – with the Toronto Blue Jays in 1992 and 1993, and with the Florida Marlins in 1997.

For ten consecutive seasons from 1995 and 2004, Leiter won ten or more games and never lost more than he won. In the 1997 World Series, Leiter started and won Game 7 over the Cleveland Indians, helping Florida win its first Fall Classic in franchise history. Leiter was traded to the New York Mets after this, where he spent the next seven years of his career.

He won a career-high 18 games in 1998 and then led the Mets to a World Series appearance in 2000 against their crosstown rival New York Yankees. He finished his career in 2005 with 162 wins and over 2,000 strikeouts. Leiter was honored by MLB with the Branch Rickey Award in 1999 and the Roberto Clemente Award in 2000, both honors bestowed upon a player for their philanthropic efforts in the community.

Since his retirement, Leiter has worked as a studio analyst at MLB Network and as a color commentator for the YES Network. He is also a board member at Major League Baseball Players Alumni Association.