re: Mett and reading defenses...many of you have mentioned that he has

Caligirl-- I haven't played since the 70's,but, here goes. Example- the QB can change the play by his audible at the line. When you see him rise up away from the center and yell at the other players, that's when he's changing the play. Example- if he sees 4 defenders on his left and 3 on the right-he changes the running play to the right where there's only 3 to block. If he sees the linebackers or safties close to the defensive linemen,they're going to blitz into the backfield-so, he could call for a short pass in the middle where the defense is not there. If they all crowd the line 8 or 9 in the box,close to the line-he could change from a running play to a run around end or a short pass out to the flat to a tailback or flanker and not run up the middle into 8 or 9 players. If the QB sees defensive backs playing way back ,then pass right behind the line where no players are. You change the play to where the least amount of defensive players are to give you an advantage. There's terms and language to learn that all the offense knows when giving the signals. If you can hear the QB say Kill Kill, he's killing the play called in the huddle and changing it with their terms and phrases.