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