Jerry Koosman by Bettmann

307 Jerry Koosman” Baseball Stock Photos, High-Res Pictures, and Images - Getty Images

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Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online

Jerry Koosman's No. 36 retired by Mets

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Jerry Koosman's No. 36 retired by Mets

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