Roger Federer reaches his 43rd Grand Slam semi-final
Switzerland's nineteen-time Grand Slam champion Roger Federer will face South Korea's first-ever Grand Slam semi-finalist Hyeon Chung in his 43rd Grand Slam semi-final on Friday. World number two Federer defeated Tomas Berdych in straight sets on Wednesday. World number 58 Chung, who ousted six-time champion Novak Djokovic, beat USA's 97th-ranked Tennys Sandgren earlier on Wednesday. 