19th Annual Arthur Ashe Kids Day to Kick Off 2014 U.S. Open
The USTA has announced that country superstar Hunter Hayes, breakout duo MKTO, girl group McCLAIN, British pop rock band The Vamps, teen sensation Madison Beer and EDM prodigy DJ Salerno will team up with tennis icons Novak Djokovic and Rafael Nadal at the 19th Annual Arthur Ashe Kids Day, Presented by Hess, Saturday, Aug. 23…

