Mets should retire Jerry Koosman's number this year regardless of 2020 season outcome
Mets will retire Jerry Koosman's number in 2020 โ New York Daily News
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
April 23, 1969: Jerry Koosman gets his first win in Mets' miracle season โ Society for American Baseball Research
New York Mets - Wikipedia
New York Mets: The 10 Greatest Mets Managers of All Time, News, Scores, Highlights, Stats, and Rumors
Mets to Retire Jerry Koosman's Jersey - The New York Times
Mets to Retire Jerry Koosman's Jersey - The New York Times
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
Mets to retire Keith Hernandez's No. 17 in July
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony