Stadium: Court 13 Round: 25 Ground: Clay
| Challenger Columbus | 2019/06/13 19:45 | Duckhee Lee v Dudi Sela | 3-6,1-6 |
| Challenger Columbus | 2019/06/12 18:10 | Duckhee Lee v John McNally | 6-3,7-5 |
| Challenger Little Rock | 2019/06/08 21:00 | Duckhee Lee v Darian King | 6-0,6-0 |
| Challenger Little Rock | 2019/06/08 16:35 | Duckhee Lee v Mitchell Krueger | 4-6,6-3,6-1 |
| Challenger Little Rock | 2019/06/07 21:00 | Zhizhen Zhang v Duckhee Lee | 4-6,7-6,6-7 |
| Challenger Little Rock | 2019/06/05 15:00 | Jordi Arconada v Duckhee Lee | 1-6,4-6 |
| Challenger Gwangju | 2019/05/15 03:40 | Duckhee Lee v Yunseong Chung | 4-6,2-6 |
| Challenger Busan | 2019/05/09 04:40 | Ricardas Berankis v Duckhee Lee | 6-3,3-6,6-3 |
| Challenger Milan | 2019/06/24 10:45 | Danilo Petrovic v Jelle Sels | 4-6,6-3,6-4 |
| Challenger Parma | 2019/06/18 14:45 | Jacopo Berrettini v Danilo Petrovic | 6-4,7-5 |
| Challenger Prostejov | 2019/06/02 13:45 | Danilo Petrovic v Arthur Rinderknech | 4-6,4-6 |
| Challenger Jerusalem | 2019/05/26 14:00 | Danilo Petrovic v Filip Peliwo | 7-6,6-7,6-1 |
| Challenger Jerusalem | 2019/05/25 08:20 | Brayden Schnur v Danilo Petrovic | 3-6,2-6 |
| Challenger Jerusalem | 2019/05/24 09:00 | Danilo Petrovic v Viktor Durasovic | 7-5,6-3 |
| Challenger Jerusalem | 2019/05/23 09:30 | Danilo Petrovic v Emil Ruusuvuori | 6-3,6-4 |
| Challenger Jerusalem | 2019/05/22 12:30 | Dudi Sela v Danilo Petrovic | 3-6,6-7 |