On August 25, 1991 — At Busch Stadium, Lee Smith becomes the fifth major leaguer to record his 300th save when he pitches a scoreless ninth inning to preserve the Cardinals’ 5-2 victory over L.A. The Louisiana native will retire with the most saves in major league history with 478, compiled during 18 seasons with eight different teams
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Sources:
Baseball Reference August 25
National Pastime August 25
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game