Sprinting technique often used by the leadout man where the rider will accelerate to maximum speed close to the sprint point with a teammate, the sprinter, drafting behind, hoping to create space between the sprinter and the pack. When the leadout man is exhausted he will move to the side to allow his teammate to race in the sprint. Often a line of leadout men will be used to form a leadout train to drive the speed higher and higher (and to reduce the chances of other riders attacking) over the closing stages of a race. The purpose of a leadout is for the sprinter to achieve high speed at the sprint approach using as little of his own energy as possible, so he has as much energy as possible for the final sprint.
A leadout rider starts his or her sprint too early. His or her teammate drafts off of him, coming around him as he starts to fade.