Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center

NYC 8-23-14: Arthur Ashe Kids Day kicks off the U.S. Open at the USTA Billie Jean King National Tennis Center hosted by Jeff Sutphen & China McClain with chart-topping artists Hunter Hayes, Shawn Mendes, MKTO, McClain, The Vamps and Madison Beer along with tennis greats Serena Williams, Novak Djokovic, Andy Murray, Victoria Azarenko and Jack Sock. All photos © Derek Storm

Hunter Hayes

Shawn Mendes

The Vamps: James McVey, Brad Simpson, Tristan Evans, Connor Ball

McClain: Lauren McClain, China McClain, Sierra McClain

Madison Beer

MKTO: Malcolm Kelley & Tony Oller

China McClain & Jeff Sutphen

DJ Salerno

Shaun T

Jack Sock, Serena Williams, Victoria Azarenka, Andy Murray

Serena Williams

Novak Djokovic

Andy Murray

Jack Sock

Victoria Azarenka

Boris Becker

Grigor Dimitrov