Estadio: Court 3 Round: 26 Ground: Hardcourt outdoor
| Challenger de Busan | 2019/05/07 05:25 | Tatsuma Ito v Tung-Lin Wu | 6-4,7-6 |
| Challenger de Seúl | 2019/05/03 03:35 | Tatsuma Ito v Max Purcell | 7-6,6-7,3-6 |
| Challenger de Seúl | 2019/05/02 02:00 | Lukas Lacko v Tatsuma Ito | 4-6,1-6 |
| Challenger de Seúl | 2019/04/30 07:20 | Filip Peliwo v Tatsuma Ito | 5-7,2-6 |
| Challenger de Taipéi | 2019/04/12 07:20 | Tatsuma Ito v Sergiy Stakhovsky | 6-7,7-6,4-6 |
| Challenger de Taipéi | 2019/04/11 07:40 | Kamil Majchrzak v Tatsuma Ito | 7-6,6-7,6-7 |
| Challenger de Taipéi | 2019/04/10 05:10 | Kuan-Yi Lee v Tatsuma Ito | 3-6,3-6 |
| ATP Miami | 2019/03/18 20:45 | Tatsuma Ito v Daniel Evans | 5-7,1-6 |
| Challenger de Busan | 2019/05/08 06:20 | Cem Ilkel v Ramkumar Ramanathan | 6-1,7-6 |
| Challenger de Busan | 2019/05/06 07:40 | Cem Ilkel v Ji Sung Nam | 6-4,7-6 |
| Challenger de Seúl | 2019/04/29 03:55 | Cem Ilkel v Yasutaka Uchiyama | 3-6,6-1,3-6 |
| Challenger de Taipéi | 2019/04/09 13:50 | Cem Ilkel v Yuichi Sugita | 5-7,3-6 |
| Challenger de Taipéi | 2019/04/08 05:00 | Mukund Sasikumar v Cem Ilkel | 3-6,4-6 |
| Challenger de Saint-Brieuc | 2019/03/26 17:30 | Corentin Moutet v Cem Ilkel | 6-2,4-6,6-1 |
| Challenger de Saint-Brieuc | 2019/03/25 19:10 | Cem Ilkel v Andres Artunedo Martinavarr | 6-4,6-4 |
| Challenger de Lille | 2019/03/18 10:35 | Rayane Roumane v Cem Ilkel | 6-3,6-2 |