[249] Jack Sock 6-2,3-6,4-6 Jason Jung [150] 2021-04-20 15:05
Stadium: Stadium Court Round: 25 Ground: Clay
Home History
| Challenger Orlando | 2021/04/16 15:00 | Jack Sock v Christian Harrison | 6-7,3-6 |
| Challenger Orlando | 2021/04/15 16:30 | Prajnesh Gunneswaran v Jack Sock | 3-6,4-6 |
| Challenger Orlando | 2021/04/13 17:40 | Yosuke Watanuki v Jack Sock | 1-6,1-6 |
| Challenger Lugano | 2021/03/25 15:35 | Roman Safiullin v Jack Sock | 6-4,6-3 |
| Challenger Lugano | 2021/03/23 14:15 | Jack Sock v Antoine Bellier | 6-4,6-3 |
| Challenger Biella | 2021/03/17 10:00 | Jack Sock v Andreas Seppi | 6-4,3-6,3-6 |
| Challenger Biella | 2021/03/15 12:05 | Akira Santillan v Jack Sock | 4-6,6-3,7-6 |
| Challenger Biella Qual | 2021/03/14 12:40 | Johan Nikles v Jack Sock | 7-6,3-6,1-6 |
Away History
| Challenger Orlando | 2021/04/12 17:10 | Jason Jung v Jenson Brooksby | 1-6,4-6 |
| ATP Miami | 2021/03/23 17:45 | Jason Jung v Paolo Lorenzi | 4-6,4-6 |
| ATP Miami | 2021/03/22 18:05 | Jason Jung v Nicolas Mahut | 6-4,3-6,6-1 |
| ATP Acapulco | 2021/03/14 01:10 | Jason Jung v Frederico Ferreira Silva | 5-7,2-6 |
| ATP Singapore | 2021/02/22 06:00 | Jason Jung v Maxime Cressy | 6-7,2-6 |
| Challenger Biella | 2021/02/15 12:45 | Soonwoo Kwon v Jason Jung | 6-3,6-4 |
| ATP Paris | 2020/10/31 17:25 | Marco Cecchinato v Jason Jung | 6-3,6-4 |
| ATP Vienna | 2020/10/28 13:00 | Jason Jung v Daniil Medvedev | 3-6,1-6 |