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Heroes of '69: Jerry Koosman Lived For The Big Games - Metsmerized Online
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Jerry koosman hi-res stock photography and images - Alamy
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Mets announce Jerry Koosman number retirement date –
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Mets COTW: 1979 Topps Jerry Koosman – Mets360
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Jerry Koosman Baseball Stats by Baseball Almanac
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MetsRewind on X: The winningest left-handed pitcher in franchise history, Jerry Koosman is a member of the @MetsRewind Hall of Fame and today's Social Media Card of the Day. #LGM #Mets /
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The perpetually underrated Jerry Koosman – Mets360
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Jerry Koosman in . . . The Franchise All-Time All-Stars
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Jerry Koosman Mets Hall of Fame Bust - Mets History
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Jerry Koosman Stats & Facts - This Day In Baseball
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In Old Timer's Day surprise, Mets retire Willie Mays' No. 24: 'New York was a magical place to play baseball' – Orange County Register
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Remembering Mets History (1968) Jerry Koosman Sets NL Record With Seven Shut outs