Jason Alexander AKA George Costanza Autographed New York (Costanza #00 – Palm Beach Autographs LLC
Yankees: Pinstripe-focused TV, movies and more to get your baseball fix
The Chronicles of George & The New York Yankees
Seinfeld & Baseball Series - George Costanza, Hitting Instructor
Just pulled the old George Costanza rated rookie card with the Yankees. 1/1 extremely rare : r/baseballcards
PopUps: By George, 'Seinfeld' still resonates with baseball fans
Learning From George Costanza About Working in Baseball
Larry David explains how Seinfeld's George Costanza wound up with Yankees
Someone Needs To Fire George Constanza From The Yankees