The USTA is well known for its charitable efforts .
The USTA so are smaller events like the 50K CopperWynd Pro Challenge in Scottsdale , Ariz. and the W.L. Amos Sr. Tennis Classic .
The USTA is well known for its charitable efforts , and so are smaller events like the 50K CopperWynd Pro Challenge in Scottsdale , Ariz. and the W.L. Amos Sr. Tennis Classic .