Keith Hernandez's Seinfeld Cameo is Still Legendary 20 Years Later - FanBuzz
Many stars played themselves. What were your favorite scenes or appearances? : r/seinfeld
The 10 funniest 'Seinfeld' sports cameos* from Jeter to Hernandez
Iconic MLB moments from Jerry Seinfeld's record-breaking sitcom, featuring George Costanza teaching Derek Jeter how to swing and Keith Hernandez dating Elaine Benes
MLB Power Rankings: The 25 Best Movie Cameos by Pro Players, News, Scores, Highlights, Stats, and Rumors
Mets Roger McDowell Seinfeld episode royalties - Sports Illustrated
Keith Hernandez's Seinfeld Cameo is Still Legendary 20 Years Later - FanBuzz
The League is the closest thing there is to Seinfeld. Let me explain., by Sheehan Planas-Arteaga
Here Are the Top 25 Sports Moments on 'Seinfeld' – NBC Bay Area
Mets Roger McDowell Seinfeld episode royalties - Sports Illustrated
A Ranking of All 168 Seinfeld Episodes, by Paul Ryan
Here Are the Top 25 Sports Moments on 'Seinfeld' – NBC Bay Area