In American football, an signal is when the QB, just before the snap of the play, changes the called play at the line of scrimmage. Essentially, it's a last-minute adjustment! The player might notice something on the https://xem-bng-trc-tip-ko-nh-ci016109.dailyblogzz.com/42584650/the-defines-an-play-call-in-american-football-an-easy-guide