[132] Jason Jung 3-6,7-6,4-6 Dominik Koepfer [85] 2019-09-28 08:00
Stadium: Court 7 Round: 64 Ground: Hardcourt outdoor
Head to Head
| Challenger Ilkley | 2019/06/20 13:00 | Dominik Koepfer v Jason Jung | 7-6,6-4 |
| Challenger San Francisco | 2018/02/12 00:00 | Dominik Koepfer v Jason Jung | 4-6,6-2,6-7 |
Home History
| ATP Chengdu | 2019/09/23 06:30 | Bradley Klahn v Jason Jung | 4-6,6-3,7-6 |
| ATP Chengdu | 2019/09/22 05:10 | Luke Saville v Jason Jung | 4-6,2-6 |
| ATP Chengdu | 2019/09/21 06:50 | Akira Santillan v Jason Jung | 5-7,6-3,6-7 |
| Challenger Kaohsiung | 2019/09/19 10:55 | Alex Bolt v Jason Jung | 7-5,4-6,7-6 |
| Challenger Kaohsiung | 2019/09/18 10:00 | Renta Tokuda v Jason Jung | 2-6,3-6 |
| Davis Cup | 2019/09/14 06:00 | Coleman Wong v Jason Jung | 1-6,2-6 |
| US Open | 2019/08/22 15:00 | Jiri Vesely v Jason Jung | 6-4,5-7,7-5 |
| US Open | 2019/08/20 16:15 | Donald Young v Jason Jung | 3-6,7-6,5-7 |
Away History
| ATP Zhuhai | 2019/09/24 06:20 | Dominik Koepfer v Zhizhen Zhang | 5-7,2-6 |
| ATP Zhuhai | 2019/09/22 06:35 | Dominik Koepfer v Yuichi Sugita | 7-6,6-3 |
| ATP Zhuhai | 2019/09/21 05:30 | Dominik Koepfer v Yecong He | 6-4,7-6 |
| US Open | 2019/09/01 21:15 | Dominik Koepfer v Daniil Medvedev | 6-3,3-6,2-6,6-7 |
| US Open | 2019/08/30 21:40 | Dominik Koepfer v Nikoloz Basilashvili | 6-3,7-6,4-6,6-1 |
| US Open | 2019/08/29 01:35 | Reilly Opelka v Dominik Koepfer | 4-6,4-6,6-7 |
| US Open | 2019/08/26 20:00 | Dominik Koepfer v Jaume Munar | 6-4,7-6,5-7,7-5 |
| US Open | 2019/08/23 16:30 | Dominik Koepfer v Yasutaka Uchiyama | 6-3,6-4 |