2019 US OPEN BALLPERSON PUBLIC TRYOUTS JUNE 4-5, 2019  USTA BILLIE JEAN KING NATIONAL TENNIS CENTER IN FLUSHING, N.Y. WHO:   More than 100 sought-after positions as ballpersons for the 2019 US Open Tennis Championships are up for grabs for everyone ages 14 and over. Prospective ballpersons for both the net and back positions will be evaluated by US Open … [Read more...] about 2019 US Open Ballperson Tryouts June 4-5, 2019