Garner's Modern American Usage (2009) notes that phrases like obviate the necessity or obviate the need are sometimes considered redundant, but these phrases are not redundancies, for the true sense of obviate the necessity is 'to prevent the necessity (from arising),' hence to make unnecessary..
At the Redskins game against the New York Giants on November 30, 2008, Clinton Portis ran down the field with a flag in the team's colors with the number 21 on it to honor the anniversary of Sean Taylor's death.
He ran a 4.24 at the combine. If u look it up on youtube, the reporter says that it is the fastest ever by a running back but Vincent Bo Jackson who ran a 4.12 40 yard dash, still possesses what is considered the fastest verifiable 40 time at an NFL combine.Chris Johnson, 4.24. Fastest man EVER in the NFL.