Ключевые слова: 2019, athlete, atp, backhand, ball, billie, center, ceremony, championship, competition, court, flushing, forehand, game, grand, greece, greek, jean, king, match, net, new, ny, nyc, open, player, points, practice, professional, racket, set, singles, slam, sport, sports, stadium, stefanos, stefanos tsitsipas, tennis, tournament, training, tsitsipas, us, us open, volley,