I find that hard to believe

A change of play, really?

You don't think with hundreds of hours of tape, other coaches wouldn't have figured that out?

I know people watching won't know for certain the original play called, but experts could hazard a guess.

Also, surely somebody would have stabbed at something so basic and pointed to the 'O' speeding up whenever it was used.

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There is nothing either good or bad, but thinking makes it so.