Keith Hernandez, WikiSein
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
Seinfeld Night with The Mets
Seinfeld Night with The Mets
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
PopUps: By George, 'Seinfeld' still resonates with baseball fans
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
Top 10 Gary, Keith, and Ron booth calls during the Mets 2022 season, Mets Highlights
It's great that the Mets are retiring Mike Piazza's number, but Gary Carter and Keith Hernandez deserve same honor – New York Daily News
Interview: Mets Star Keith Hernandez on 'Seinfeld
Hey, look! Jerry Seinfeld and Keith Hernandez at a Mets game