Baltimore's Steve Myhra booted a game-tying field goal with seven seconds left, sending into overtime the game credited with catalyzing the NFL's popularity surge. After a Giants punt, Johnny Unitas engineered a 13-play, 80-yard drive, culminating with Alan Ameche's famous one-yard touchdown plunge that sealed the NFL championship for the Colts and helped pro football achieve cultural permanence in the U.S.