Ключевые слова: 2015, action, america, american, athlete, atp, backhand, ball, billie, center, championship, court, exercise, flushing, forehand, isner, jean, john, king, match, national, net, new, ny, nyc, open, overhead, players, points, practice, prize, professional, racket, serve, set, singles, slam, sports, stadium, states, tennis, title, tournament, training, united, us, usa, volley, york,