![Chung is back and ready to give Nadal all he's got at the US Open - Official Site of the 2021 US Open Tennis Championships - A USTA Event Chung is back and ready to give Nadal all he's got at the US Open - Official Site of the 2021 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/b_USTA1173687_20190829_USO_D4_P5S_3626.jpg)
Chung is back and ready to give Nadal all he's got at the US Open - Official Site of the 2021 US Open Tennis Championships - A USTA Event
![South Korean tennis player Chung Hyeon takes part in a training session in preparation for the Rolex Shanghai Masters 2018 tennis tournament in Shangh Stock Photo - Alamy South Korean tennis player Chung Hyeon takes part in a training session in preparation for the Rolex Shanghai Masters 2018 tennis tournament in Shangh Stock Photo - Alamy](https://c8.alamy.com/comp/W633KR/south-korean-tennis-player-chung-hyeon-takes-part-in-a-training-session-in-preparation-for-the-rolex-shanghai-masters-2018-tennis-tournament-in-shangh-W633KR.jpg)
South Korean tennis player Chung Hyeon takes part in a training session in preparation for the Rolex Shanghai Masters 2018 tennis tournament in Shangh Stock Photo - Alamy
![Hyeon Chung shares horrific picture of blister that forced him to retire from Australian Open semi-final Hyeon Chung shares horrific picture of blister that forced him to retire from Australian Open semi-final](https://www.thesun.co.uk/wp-content/uploads/2018/01/nintchdbpict000380833932-e1517050923432.jpg)