Jerry Koosman's No. 36 retired by Mets
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List of Major League Baseball retired numbers - Wikipedia
NY Mets to retire Jerry Koosman's number next season, Jeff Wilpon says
Mets News: Mets to retire Jerry Koosman's number 36 in 2020. - Amazin' Avenue
Mets Will Retire Jerry Koosman's Number On June 13 - Metsmerized Online
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Jerry Koosman Autographed Jersey - Mets History
Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online
Mets Retired Numbers
New York Mets - ๐
The date is set! ๐
We will retire Jerry Koosman's No. 3โฃ6โฃ on Saturday, June 13 in a pre-game ceremony. ๐๏ธ๐
Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online