ATP Newport | 07/17 15:00 | 14 | Gage Brymer v Yunseong Chung | 3-6,6-7 | |
Challenger Chicago | 07/13 16:50 | 26 | [252] Yuta Shimizu v Yunseong Chung [313] | 6-3,5-7,6-3 | |
Challenger Chicago | 07/12 17:30 | 25 | [313] Yunseong Chung v Abdullah Shelbayh [235] | 6-3,6-4 | |
Challenger Chicago | 07/10 16:50 | 19 | Yunseong Chung v Thai-Son Kwiatkowski | 6-0,3-6,6-3 | |
Challenger Chicago | 07/09 17:20 | 14 | Yunseong Chung v Andrew Fenty | 7-5,6-2 | |
Challenger Bloomfield Hills | 07/04 15:00 | 19 | [313] Yunseong Chung v Ernesto Escobedo [399] | 4-6,3-6 | |
Challenger Bloomfield Hills | 07/03 16:25 | 14 | [313] Yunseong Chung v Strong Kirchheimer [387] | 6-4,7-6 | |
ITF - Anseong M25 | 06/24 02:55 | 28 | Yunseong Chung v Gerard Campana Lee | 2-6,6-2,3-6 | |
ITF - Anseong M25 | 06/23 02:00 | 27 | Yunseong Chung v Shunsuke Mitsui | 6-1,6-1 | |
ITF - Anseong M25 | 06/22 02:00 | 26 | Yunseong Chung v Dong Ju Kim | 3-6,6-1,7-5 | |
ITF - Anseong M25 | 06/21 05:50 | 25 | Yunseong Chung v Jae Myeong Lee | 6-2,6-2 | |
ITF - Changwon M25 | 06/15 02:30 | 26 | Yunseong Chung v Renta Tokuda | 6-7,1-6 | |
ITF - Changwon M25 | 06/14 01:00 | 25 | Yunseong Chung v Yeongseok Jeong | 6-2,6-2 | |
ITF - Daegu M25 | 06/09 00:50 | 27 | Yunseong Chung v Uisung Park | 6-7,3-6 | |
ITF - Daegu M25 | 06/08 00:50 | 26 | Yunseong Chung v Sanhui Shin | Retired | |
ITF - Daegu M25 | 06/07 03:55 | 25 | Yunseong Chung v Seokhyeon Chu | 6-3,6-1 | |
Challenger Busan | 05/11 06:40 | 26 | [328] Yunseong Chung v Gabriel Diallo [162] | 6-7,6-7 | |
Challenger Busan | 05/09 06:15 | 25 | [328] Yunseong Chung v Tung-Lin Wu [181] | 7-5,6-2 | |
Challenger Gwangju | 05/05 04:45 | 26 | [363] Yunseong Chung v Jason Jung [338] | 6-3,3-6,4-6 | |
Challenger Gwangju | 05/02 06:40 | 25 | [363] Yunseong Chung v Kaichi Uchida [150] | 7-6,6-3 | |
Challenger Seoul | 04/29 06:00 | 28 | [363] Yunseong Chung v Aleksandar Vukic [142] | 6-7,1-6 | |
Challenger Seoul | 04/28 04:00 | 27 | [141] Rinky Hijikata v Yunseong Chung [363] | 2-6,3-6 | |
Challenger Seoul | 04/27 04:00 | 26 | [363] Yunseong Chung v Jordan Thompson [91] | 6-4,6-3 | |
Challenger Seoul | 04/26 02:00 | 25 | [363] Yunseong Chung v Peter Gojowczyk [345] | 6-2,6-3 | |
ITF - Dżakarta M25 | 04/20 03:55 | 26 | Yunseong Chung v Kasidit Samrej | Retired | |
ITF - Dżakarta M25 | 04/19 04:00 | 25 | [357] Yunseong Chung v Fajing Sun [316] | 6-3,6-4 | |
ITF - Dżakarta M25 | 04/13 02:30 | 26 | M Rifqi Fitriadi v Yunseong Chung | Retired | |
ITF - Dżakarta M25 | 04/12 04:25 | 25 | Andrew Rogers v Yunseong Chung | 4-6,2-6 | |
ITF - Kashiwa M25 | 04/07 01:00 | 27 | [215] Yu Hsiou Hsu v Yunseong Chung [351] | 6-1,6-4 | |
ITF - Kashiwa M25 | 04/06 01:30 | 26 | Daisuke Sumizawa v Yunseong Chung | 2-6,2-6 |
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.