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 - M25 Anseong | 06/24 02:55 | 28 | Yunseong Chung v Gerard Campana Lee | 2-6,6-2,3-6 | |
ITF - M25 Anseong | 06/23 02:00 | 27 | Yunseong Chung v Shunsuke Mitsui | 6-1,6-1 | |
ITF - M25 Anseong | 06/22 02:00 | 26 | Yunseong Chung v Dong Ju Kim | 3-6,6-1,7-5 | |
ITF - M25 Anseong | 06/21 05:50 | 25 | Yunseong Chung v Jae Myeong Lee | 6-2,6-2 | |
ITF - M25 Changwon | 06/15 02:30 | 26 | Yunseong Chung v Renta Tokuda | 6-7,1-6 | |
ITF - M25 Changwon | 06/14 01:00 | 25 | Yunseong Chung v Yeongseok Jeong | 6-2,6-2 | |
ITF - M25 Daegu | 06/09 00:50 | 27 | Yunseong Chung v Uisung Park | 6-7,3-6 | |
ITF - M25 Daegu | 06/08 00:50 | 26 | Yunseong Chung v Sanhui Shin | Retired | |
ITF - M25 Daegu | 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 - Soul | 04/29 06:00 | 28 | [363] Yunseong Chung v Aleksandar Vukic [142] | 6-7,1-6 | |
Challenger - Soul | 04/28 04:00 | 27 | [141] Rinky Hijikata v Yunseong Chung [363] | 2-6,3-6 | |
Challenger - Soul | 04/27 04:00 | 26 | [363] Yunseong Chung v Jordan Thompson [91] | 6-4,6-3 | |
Challenger - Soul | 04/26 02:00 | 25 | [363] Yunseong Chung v Peter Gojowczyk [345] | 6-2,6-3 | |
ITF - M25 Jakarta | 04/20 03:55 | 26 | Yunseong Chung v Kasidit Samrej | Retired | |
ITF - M25 Jakarta | 04/19 04:00 | 25 | [357] Yunseong Chung v Fajing Sun [316] | 6-3,6-4 | |
ITF - M25 Jakarta | 04/13 02:30 | 26 | M Rifqi Fitriadi v Yunseong Chung | Retired | |
ITF - M25 Jakarta | 04/12 04:25 | 25 | Andrew Rogers v Yunseong Chung | 4-6,2-6 | |
ITF - M25 Kashiwa | 04/07 01:00 | 27 | [215] Yu Hsiou Hsu v Yunseong Chung [351] | 6-1,6-4 | |
ITF - M25 Kashiwa | 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.