Keith Hernandez recalls his guest appearance on Seinfeld
Keith Hernandez Did Not Commit Any Errors On June 14th, 1987
Open up, it's the police cards!
Keith's Seinfeld Cameo, cameo appearance
New York Mets - Did you know Keith Hernandez's signature stretch
Keith Hernandez Had Never Heard of 'Seinfeld' But Took 15 Grand to
Legends of cardboard: Kirt Manwaring
Seinfeld Night with The Mets
Keith Hernandez's top Mets moments, No. 4: Seinfeld
New York Mets legend Keith Hernandez tells Tucker Carlson how