Ключевые слова: 2015, athlete, atp, backhand, ball, billie, center, championship, court, exercise, flushing, frances, game, grand, hard, jean, king, match, national, net, new, nike, open, players, points, practice, prize, professional, racket, serve, set, singles, slam, sports, stadium, states, strings, tennis, tiafoe, title, tournament, training, united, us, usa, volley, yonex, york,