How do tournament players benefit by monthly measuring their skill improvement using statistics?

"A tennis racquet and 20 years of playing experience is no longer sufficient for achieving success as a teach pro or coach in the high performance tennis arena of today. Sports Science applications and high-tech computer programs like the new Net Results 2.0 Performance Tracking System will soon be required tools for every professional."

Dr. Jim Loehr: Co-founder of Human Performance Institute and world renowned sports psychologist. Author of "The MENTAL GAME - Winning at Pressure Tennis" 

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