Rybakina quiets injury concerns with first-round win over Frodin

NEW YORK, Sept 1 : Second seed Elena Rybakina eased concerns over her fitness and advanced to the U.S. Open second round on Tuesday, with a clinical 6-3 6-2 win over American crowd favourite Thea Frodin.The Kazakh withdrew from the Cincinnati tune-up tournament with a leg injury, raising questions over whether she would even compete in New York but appeared untroubled as she launched her bid for the title and the world number one ranking. Rybakina, a two-time Grand Slam champion, will next face either Czech Darja Vidmanova or Spain's Jessica Bouzas Maneiro.Frodin was making her Grand Slam main-draw debut five years after portraying a young Serena Williams in the Oscar-winning film "King Richard". The 17-year-old tennis-playing double for the film showed flashes of brilliance, with 11 aces,