I've also seen cases where a supposedly "slow" player is running down the sideline with a speed demon DB quickly gaining on him and he makes just a slight move to the inside and the DB can't readjust fast enough and his momentum takes him right out of the play. If one has gotten out of position so badly that they have to run 40 yards to make a play, they aren't likely to be successful.Good analysis, IH8. I saw that at work when Trent broke away for his TD against UTw. Their safety bit, the corners were up and, Trent is so fast, they made a wrong judgment on their angles, if indeed they ever had a workable angle. By the time the truth became apparent, their effort looked pretty futile. He gained on them all the way to the EZ. All the while Muschamp was on the sideline making a tomahawk gesture and you could read his lips screaming "There's no way he can be that fast!"
George Teague during the '93 Sugar Bowl is an exception, but if Lamar Thomas had turned back toward the middle of the field, he would have probably scored.
It's difficult to make abrupt changes in direction when running at top speed and my ankle can attest to that.