Mets announce Jerry Koosman number retirement date –
Jerry Koosman number retirement set for June 13 - Amazin' Avenue
Mets Retire Legendary Pitcher Jerry Koosman's No. 36 - Sports Illustrated New York Mets News, Analysis and More
New York Mets news: Jerry Koosman's No. 36 will be retired next year
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Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online
Jerry Koosman's No. 36 retired by Mets
Jerry Koosman's No. 36 retired by Mets
Mets announce Jerry Koosman number retirement date
Mets pick new date for Jerry Koosman's number retirement ceremony
Jerry Koosman's No 36 to be retired by Mets in June