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GREEN DOT HELPS REF TRACK WHO HAS AUDIO
One of the new things we noticed during last night's Hall of Fame game was that each of the quarterbacks had affixed to the backs of their helmets a small green dot.
NFL spokesman Greg Aiello tells us that the sticker is a new device being used to help officials confirm that only one player on offense is wearing a helmet with a radio receiver from the coaching staff.
So, if a team plans to put two quarterbacks on the field at the same time, one of them must change helmets before entering the game.
It's uncommon but not unheard of for two quarterbacks to be on the field at the same time. Last year, the Falcons ran a few plays with both Matt Schaub and Michael Vick on the field. In 1995, Kordell Stewart regularly entered the game as a receiver or as a running back.
During the offseason, there was some discussion about allowing one player on defense to have a radio in his helmet as well, but nothing to date has come of it. Also, there is a movement to place a receiver in the helmet of each offensive player, so that they can all hear the signals being called out by the quarterback.