"This is not live! Ladies and gentleman, Army has not scored again!"

Tony Verna, Who Started Instant Replay and Remade Sports Television, Dies at 81.  (The New York Times, 1/21/2015)

Little recognized at the time, perhaps owing to the gravity of the national mood [15 days after President Kennedy's assassination] , was an innovation that changed the way sports — and other events — were televised, seen and, eventually, officiated. In the fourth quarter of the game, when Army quarterback Rollie Stichweh ran for a touchdown, CBS not only showed the play live but also showed it again immediately on tape. It was the first time that had happened.
 So striking was the innovation that Lindsey Nelson, the play-by-play announcer, exclaimed to viewers: