On August 11, 1981 — Ray Searage pitches two-plus innings of hitless relief to be credited with the win in New York’s 4-2 victory over Chicago at Wrigley Field. The southpaw, with his eighth-inning single, gains the distinction of being the only Met player to have compiled a 1.000 batting average (1-for-1) and a 1.000 winning percentage (1-0) while playing with the team.

Source:
Baseball Reference August 11
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game