The Mets signing of Ron Villone is historic for this reason. If Villone pitches in a major league game for the Mets, he ties Mike Morgan's record for most franchises played for in a career. The Mets would be Villone's 12th team, joining... The Mariners, Padres, Brewers, Indians, Reds, Rockies, Astros, Pirates, Marlins, Yankees, and Cardinals. Two other former Mets have played for 11 teams: Todd Zeile and Rick White Three other former Mets have played for 10: Tommy Davis, Bob "Righty" Miller, and Roberto Hernandez.
A blog devoted to cataloguing New York Mets walk-offs and other trivia. For those unaware of the definition of walk-off just replace the term with the words "game-ending" and you should have a much better understanding of the phrase.