When did this boo every injured player thing start?

when teams started running gimmick offenses

Tempo offenses

Chip Kelley and his Oregon tree huggers.

Waiti till Monday during the MNC game.

quote:

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When it became obvious lots of players faked injuries.

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I can see if it's a long drive or whatever...but the we were coming out of a timeout and he pulled up in the middle of the play. Who would fake an injury during a play

#1. When hurry-up offenses to take advantage of confusion and inability to substitute became popular.

#2. When you're playing in Philadelphia

Edit: On the bright side, at least the fans weren't cheering a serious injury. They like doing that as well.