Author Martin van Daalen has been coaching for over 35 years. After becoming a National Coach and Director of Coaching in the Netherlands, he worked for a long period of time with ...view moreAuthor Martin van Daalen has been coaching for over 35 years. After becoming a National Coach and Director of Coaching in the Netherlands, he worked for a long period of time with top juniors and professional tennis players in the US. As a National coach, working for the USTA, he has helped develop many top juniors and professionals on the tour today. His extensive experience has aided him in writing a detailed book on how to improve your tennis game and how to teach players to perform to the best of their ability.view less