In the absence of natural speed, a wily defender is going to use his tactical nous and dirty tricks to slow down a speedy opponent.
So how do you conquer a master of the dark arts? Vary your movement, be brave and let the hatchet man hang himself, says Arsenal's sprint king, Theo Walcott.
More after the break
For more on how to outstrip a slow full-back check out this video for Walcott's inside track.
Theo Walcott: Finish on the run
Theo Walcott: Big match preparation
Finish like Theo Walcott
Theo Walcott: How to win the foot race
Theo Walcott: Make the first 5 yards count
Theo Walcott: Control the ball at speed
Theo Walcott's guide to sprinting