Known for his unorthodox release of the baseball, Williams is remembered as "Wild Thing," a nickname he acquired while playing with the Cubs. During his Major League career, Williams earned 192 saves and posted a career 3.65 ERA with the Rangers (1986-88), Cubs (1989-90), Phillies (1991-93), Astros (1994), Angels (1995) and Royals (1997). He was a member of the 1989 National League All-Star team as well as the 1993 National League Champion Phillies.
Williams has contributed to FOX's pregame and post-game coverage during the MLB regular season and Postseason, in addition to hosting a weekly radio show, "Remember When" on Sirius/XM, a one-hour pregame radio show, "The Wild Pitch," on Philadelphia's 1210-WPHT.
Before joining MLB Network, Williams was a post-game analyst on Comcast Sportsnet's "Phillies Post-Game Live," contributing analyst for TBS' baseball coverage, and a contributor to 610-WIP's Angelo Cataldi and The Morning Team in Philadelphia.