Eagles–Giants rivalry – Wikipedia

The Eagles–Giants rivalry is a National Football League rivalry between the Philadelphia Eagles and New York Giants. The rivalry began in 1933 with the founding of the Eagles, and slowly strengthened when both teams came to relative prominence in the 1940s and 1950s. The two teams have played in the same division in the NFL every year since 1933. The ferocity of the rivalry can also be attributed to the geographic New York-Philadelphia rivalry, which is mirrored in Major League Baseball’s …

https://en.wikipedia.org/wiki/Eagles%E2%80%93Giants_rivalry