Mets to retire Jerry Koosman's No. 36 in June - Newsday
Mets to Retire Jerry Koosman's Jersey - The New York Times
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Mets should retire Jerry Koosman's number this year regardless of 2020 season outcome
Mets' Jerry Koosman is finally getting the respect he is due
Jerry Koosman – Society for American Baseball Research
Mets retire Jerry Koosman's No. 36 in Citi Field ceremony
Retired Number Is Latest Mets Head-Scratcher
Mets retiring Dwight Gooden's No. 16 and Darryl Strawberry's No. 18 next season - CBS New York
Ed Kranepool must be next Mets number retired after Jerry Koosman: Pantorno – Metro US
New York Mets news: Jerry Koosman's No. 36 will be retired next year