Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Burnie | 2019/01/21 00:30 | Jordi Samper-Montana v Yunseong Chung | 5-7,1-6 |
| Challenger Canberra | 2019/01/07 00:40 | Yunseong Chung v Brydan Klein | 6-7,7-6,0-6 |
| Challenger Noumea | 2019/01/01 04:25 | Yunseong Chung v Jurij Rodionov | 4-6,1-6 |
| Challenger Noumea | 2018/12/31 00:30 | Yunseong Chung v Tomislav Brkic | 6-3,6-2 |
| Australian Open WC | 2018/11/30 05:45 | Zhe Li v Yunseong Chung | 6-4,6-4 |
| Australian Open WC | 2018/11/29 03:50 | Rigele Te v Yunseong Chung | 6-7,1-6 |
| Challenger Kobe | 2018/11/16 04:45 | Yunseong Chung v Tatsuma Ito | 2-6,3-6 |
| Challenger Kobe | 2018/11/14 05:00 | Nam Hoang Ly v Yunseong Chung | 4-6,2-6 |
| Australian Open | 2019/01/09 00:35 | Lorenzo Giustino v Yuichi Sugita | 6-7,6-2,4-6 |
| Challenger Noumea | 2018/12/31 02:25 | Lorenzo Giustino v Thai-Son Kwiatkowski | 2-6,3-6 |
| Challenger Montevideo | 2018/11/07 18:40 | Pedro Cachin v Lorenzo Giustino | 1-6,3-6 |
| Challenger Montevideo | 2018/11/05 17:00 | Lorenzo Giustino v Thomaz Bellucci | 6-3,6-3 |
| Challenger Guayaquil | 2018/10/29 18:00 | Juan Ignacio Londero v Lorenzo Giustino | 6-2,6-4 |
| Challenger Barcelona | 2018/10/12 09:30 | Pedro Martinez v Lorenzo Giustino | 6-2,7-5 |
| Challenger Barcelona | 2018/10/11 09:30 | Lorenzo Giustino v Nicola Kuhn | 6-4,4-6,6-1 |
| Challenger Barcelona | 2018/10/10 10:00 | Jordi Samper-Montana v Lorenzo Giustino | 4-6,4-6 |