On August 22, 2000 — Working a scoreless 12th in a 7 – 6 victory over the Braves, Rockies catcher Brent Mayne becomes the first position player to be a winning pitcher since 1968 when outfielder Rocky Colavito, as a Yankee, homered and threw 2 2/3 shutout innings against his former teammates helping the Bronx Bombers to beat the Tigers.
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Sources:
Baseball Reference August 22
National Pastime August 22
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game