The name "20-yard shuttle" is derived from the total yards that athletes travel during the drill. This drill is also known as the "short shuttle" or the "5-10-5" drill." The athlete starts at the center cone of three cones, each a distance of 5 yards apart. The athlete then pushes off their dominant leg in the opposite direction for 5 yards and touches the line. After covering this distance and touching the line as quickly as possible, the athlete must reverse and go 10 yards in the opposite direction and again touch the line. Finally, they reverse direction again, ending the drill at the starting point after traveling another 5 yards. The procedure is timed and the athlete starts the drill on reaction to the word "Go" as announced by the person starting the stopwatch. The NFL Scouting Combine allows each participant three opportunities to run the drill, and the best time of the three attempts is recorded as that players' time.