In college, a player is down when they hit the ground, even if no defensive player touches them. In the NFL, a player has to be touched when they're down.
The Dallas Cowboys play in the NFL.
Yup, that's a touchdown for Brandon Myers, and Bruce Carter and Jeff Heath picked a really bad time to have a moment of nostalgia for their college years.
The Giants are playing pretty poorly, but thanks to this score, it's a one-score game -- 21-13, Cowboys.