Amazing forehand passing shot by Roger Federer. Leading 1-0 Ad-40 in the first set with Chung serving, the Swiss pulled off a great winner to break the South Korean for the first time in the match. Federer equals his best career start to the year with 16 wins and zero losses. The Swiss will now enjoy a day off and then face Borna Coric in the semifinals. Federer is enjoying a great last 14-15 months, seeking his tenth title and trying to confirm his title defence.