Keith Hernandez's Seinfeld Cameo is Still Legendary 20 Years Later - FanBuzz
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
MLB - script to help Brooklyn Cyclones celebrate Seinfield Night - ESPN
5 memorable Keith Hernandez moments from his Mets career
Why Keith Hernandez Belongs in the Hall of Fame - Cooperstown Cred
Keith Hernandez Stats
PopUps: By George, 'Seinfeld' still resonates with baseball fans
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
KEITH HERNANDEZ NEW YORK METS 'SEINFELD' PSA AUTHENTICATED COLOR SIGNED 8x10
I could never really get into seinfeld but I figured Yankees and Mets fans would like this lol. : r/mlb
Jerry Seinfeld and Keith Hernandez reunite for some laughs in 2019, Time Machine Tuesday
Keith Hernandez Top 10 career moments
Keith Hernandez's greatest hits - Amazin' Avenue
Seinfeld' had a backup plan in case Keith Hernandez was bad at playing himself