Why do football players need quick reaction time?

Answer 1

If you're a receiver it is important because if your reaction time is off by just a bit, you could end up like Joshua Cribbs. If you are a quarterback it is important so you don't fumble the snap when you hike the ball.

Answer 2

Footballers need reaction time because the quicker the time the faster the footballer can respond to the stimulus.

Answer 3

When you can react quicker from the snap you can get the jump on opposition unpenalized