Does the protected ranking system distort the true rankings of players in the world?
Chung stuns Djokovic in Australian Open - Khmer Times
What are the technical deficiencies in Hyeon Chung's service action? | Talk Tennis
ATP top 10 next stars of tennis: does Hyeon Chung make the list? - Tennis365
Hyeon Chung beats Tennys Sandgren in Australian Open quarter-final – as it happened | Australian Open | The Guardian
Hyeon Chung Tennis Player Profile | ITF
Tombeur de Djokovic, Hyeon Chung fait aussi partie de la «next gen» du circuit ATP - L'Équipe
My body feels pretty good now": Hyeon Chung aims to bounce back
South Korean Tennis Player Defeats His Idol, Novak Djokovic
Hyeon Chung | Overview | ATP Tour | Tennis
Damir Džumhur - Wikipedia
Yoshihito Nishioka - Wikipedia
Hyeon Chung- Can the Korean make the jump? 2018 Season Preview - Love Tennis Blog
Chung can end 'Big Four' era - Khmer Times
Wimbledon 2018: Deaf player Lee Duck-hee aiming to qualify - BBC Sport
Hyeon Chung's Racquet - Tennisnerd.net
Hyeon Chung - TennisLive.com
James Duckworth (tennis) - Wikipedia
South Korean Tennis Player Defeats His Idol, Novak Djokovic
Hyeon Chung's Tennis Breakthrough Was Shaped in a Parking Lot - The New York Times
Roger Federer into Australian Open final as Hyeon Chung retires hurt – as it happened | Australian Open 2018 | The Guardian
Hyeon Chung's Tennis Breakthrough Was Shaped in a Parking Lot - The New York Times
Wimbledon 2018 matches LIVE on TV: tennis live stream, schedule, channel coverage, draw, start time revealed | Radio Times
