Movement continues to be difficult to quantify until the motion is slowed down and analyzed. The Return of Serve is a good example as can be seen in this video. However, once the motion is quantified the problem becomes one of HOW to teach this to our athletes. The Split Step Coach is one of the latest teaching tools that allows an athlete to practice their timing and building the sensory-motor pathways so that the movement can become 'automatic' and removed from conscience thought.