Repeat: Federer next meets Lu Yen-hsun, who defeated Ivo Karlovic in two tie-breaks, while American Steve Johnson was given a walkover into the quarter-finals by Teymuraz Gabashvili.
Federer next meets Lu Yen-hsun, who defeated Ivo Karlovic in two tie-breaks, while American Steve Johnson was given a walkover into the quarter-finals by Teymuraz Gabashvili.