Challenger - Salinas | 04/05 20:45 | 25 | Blu Baker v Yunseong Chung | 2-6,3-6 | |
Challenger - Lugano | 03/29 12:15 | 25 | [367] Yunseong Chung v Yuichi Sugita [229] | 3-6,4-6 | |
Challenger - Lugano | 03/28 10:10 | 19 | [306] Lucas Miedler v Yunseong Chung [367] | 3-6,4-6 | |
Challenger - Lugano | 03/27 13:40 | 14 | [456] Antoine Bellier v Yunseong Chung [367] | 6-7,2-6 | |
Challenger - Biel | 03/20 15:30 | 14 | [365] Yunseong Chung v Marek Gengel [430] | 6-3,4-6,3-6 | |
Challenger - Cleveland | 01/30 20:35 | 14 | [416] Yunseong Chung v Michael Geerts [339] | Retired | |
ITF M25 - Monastir | 01/23 09:45 | 29 | [416] Yunseong Chung v Harold Mayot [471] | 4-6,6-0,4-6 | |
ITF M25 - Monastir | 01/22 09:00 | 28 | Yunseong Chung v Titouan Droguet | 7-6,6-4 | |
ITF M25 - Monastir | 01/21 12:30 | 27 | Gleb Sakharov v Yunseong Chung | 3-6,3-6 | |
ITF M25 - Monastir | 01/20 11:15 | 26 | Jumpei Yamasaki v Yunseong Chung | 4-6,2-6 | |
ITF M25 - Monastir | 01/18 10:45 | 25 | Alexander Donski v Yunseong Chung | 4-6,2-6 | |
ITF M25 - Monastir | 01/15 08:25 | 27 | [415] Yunseong Chung v Skander Mansouri [438] | 6-4,3-6,4-6 | |
ITF M25 - Monastir | 01/14 12:00 | 26 | Yunseong Chung v Josh Reid | 6-2,6-0 | |
ITF M25 - Monastir | 01/12 08:00 | 25 | Yunseong Chung v Skander Mezouar | 6-0,6-2 | |
ITF M25 - Meitar | 11/06 08:00 | 25 | Ben Patael v Yunseong Chung | Cancelled | |
ITF M25 - Meitar | 11/03 09:55 | 26 | Arnaud Bovy v Yunseong Chung | 6-4,3-6,6-4 | |
ITF M25 - Meitar | 11/02 08:00 | 25 | Joshua Luck v Yunseong Chung | 3-6,1-6 | |
Challenger - Columbus | 09/21 14:00 | 25 | [419] Yunseong Chung v Ji Sung Nam [382] | 6-3,4-6,6-7 | |
Challenger - Columbus | 09/20 14:00 | 19 | [367] Alexis Galarneau v Yunseong Chung [419] | 4-6,4-6 | |
Challenger - Columbus | 09/19 18:35 | 14 | Justin Boulais v Yunseong Chung | 6-7,3-6 | |
ATP - Winston-Salem | 08/21 20:10 | 14 | [415] Yunseong Chung v Yosuke Watanuki [255] | 3-6,6-7 | |
ITF M25 - Decatur | 08/06 17:10 | 27 | Yunseong Chung v Eliot Spizzirri | 4-6,4-6 | |
ITF M25 - Decatur | 08/05 17:55 | 26 | Jumpei Yamasaki v Yunseong Chung | 2-6,2-6 | |
ITF M25 - Decatur | 08/04 18:45 | 25 | Yunseong Chung v Nathan Ponwith | 6-2,6-1 | |
ITF M25 - Champaign | 07/28 17:25 | 25 | Yunseong Chung v Ben Shelton | 5-7,0-6 | |
Challenger - Nur-Sultan | 07/19 10:05 | 25 | [405] Yunseong Chung v Hugo Grenier [252] | 7-6,3-6,1-6 | |
Challenger - Nur-Sultan | 07/15 06:00 | 26 | [159] Roman Safiullin v Yunseong Chung [393] | 6-3,6-4 | |
Challenger - Nur-Sultan | 07/13 07:15 | 25 | [393] Yunseong Chung v Yan Bondarevskiy [464] | 6-3,6-4 | |
ITF M15 - Monastir | 05/28 08:30 | 27 | [443] Thomas Fancutt v Yunseong Chung [409] | Retired | |
ITF M15 - Monastir | 05/27 08:30 | 26 | Yuta Kikuchi v Yunseong Chung | 2-6,6-3,1-6 |
Chung Yun-seong (Korean: 정윤성; born 27 March 1998) is a South Korean tennis player.
Chung has a career high ATP singles ranking of No. 233 achieved on 22 July 2019. He also has a career high ATP doubles ranking of No. 129 achieved on 22 May 2023. Chung has won three doubles ATP Challenger titles as well as four ITF singles and five doubles titles.
On the junior tour, Chung had a career-high combined ranking of 3 achieved on 21 March 2016. Chung was a semifinalist at the 2016 Australian Open boys' singles event and the 2015 US Open boys' singles event where he fell to both eventual champions Oliver Anderson and Taylor Fritz, respectively. Chung was also a singles finalist at the Osaka Mayor's Cup in 2014.
He and Orlando Luz lost to Yishai Oliel of Israel and Patrik Rikl of the Czech Republic in the final of the 2016 French Open boys' doubles, 6–3, 6–4.