Serena Williams In US Open Quarterfinals Winning Tough Three-setter

Six-time champion Serena Williams won a tough three-set battle against Greek lady Maria Sakkari to advance to the US Open quarterfinals. It became more evident in this year's US Open outings so far that things are not easy for Williams as the 38-year-old tennis super star had to fight three grueling sets in two consecutive matches for survival. Williams looked composed as she took the first set