And Yelverton , 48 , a U.S. Professional Tennis Association - certified coach for 17 years and U.S. Tennis Association - certified high performance coach for 12 years , is a great coach .
The best coaches teach more than sports .
Yelverton , 48 , a U.S. Professional Tennis Association - certified coach for 17 years and U.S. Tennis Association - certified high performance coach for 12 years , is a great coach .
The best coaches teach more than sports .