
It's astounding enough that Philip Rivers on Sunday, just five days after his 44th birthday, will take a snap under center for the Colts five years after he last played in the NFL. There are several facts about Rivers that make his NFL comeback even more remarkable, but none more extraordinary than the fact that he's a grandfather at 44 years young.
But Rivers is not the first grandfather to play in the NFL—or even in pro sports entirely. There have been several high-profile stars in each pro sports league who played at a high level long enough for their children to have children of their own.