Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Acquiring Proper Tennis Movement - Moving faster therefore!!

Another good piece of work from the former Chief Trainer of the German Tennis Federation. Richard is still very much active in research for tennis - in all aspects of the game. Currently, a much sought after speaker at the International Tennis Federation's seminars worldwide, this new work by him provides greater practical knowledge to be added for speed around/across the tennis court, as distinct from pure speed down a 100 metre track. Covered topics include enhancing innate speed, power in speed, endurance etc. Coaches of all levels of skill will definitely find something useful in this new book. I know I have, besides the hundreds of coaches in Europe and the Americas applying it on court at this moment when you are reading this review.