US OPEN CHAMPION SLOANE STEPHENS BECOMES USTA FOUNDATION’S FIRST NATIONAL EXCELLENCE PROGRAM AMBASSADOR Stephens Will Participate In Numerous Activations and Appearances With NJTL Students Who Compete On Excellence Teams WHITE PLAINS, N.Y., Nov. 04, 2019 – The USTA Foundation, the national charitable arm of the United States Tennis Association today announced that it has … [Read more...] about USTA Foundation Appoints 2017 US Open Champion Sloane Stephens as the National Excellence Program Ambassador