The three-times champion took control of the match when he broke the South Korean’s serve in the first set to grab a 4-2 lead
Browsing: Chung Hyeon
Chung withdrew from the Lyon Open in the French city on Tuesday, a day before he was to face the 75th-ranked Gilles Simon in the round of 16.
Chung’s fairytale run at the Australian Open in January came to a crashing halt when he retired with foot blisters while trailing Federer 6-1 5-2 in their semi-final.
Federer arrived at Indian Wells knowing anything less than a semi-final finish would cede his world ranking back to Rafael Nadal, who is not playing this week
The 36 year-old Swiss ace has now equalled his best start to a season to stay on course for a sixth Indian Wells title
The 21-year-old Chung, ranked 58th in the world, proved an immovable object, absorbing everything the former world number one threw at him, returning all with interest.
The six-time champion had been playing in his first competitive tournament since a six-month injury layoff and at times, the former world number one looked to be struggling with an ongoing issue with his elbow.