Stadium: Centre Court Round: 24 Ground: Hardcourt outdoor
| Challenger Seoul | 2019/04/29 03:55 | Cem Ilkel v Yasutaka Uchiyama | 3-6,6-1,3-6 |
| Challenger - Taipei | 2019/04/09 13:50 | Cem Ilkel v Sugita, Yuichi | 5-7,3-6 |
| Challenger - Taipei | 2019/04/08 05:00 | Mukund Sasikumar v Cem Ilkel | 3-6,4-6 |
| Challenger St Brieuc | 2019/03/26 17:30 | Corentin Moutet v Cem Ilkel | 6-2,4-6,6-1 |
| Challenger St Brieuc | 2019/03/25 19:10 | Cem Ilkel v Artunedo Martinav. | 6-4,6-4 |
| Challenger - Lille | 2019/03/18 10:35 | Roumane, Rayane v Cem Ilkel | 6-3,6-2 |
| Challenger - Pau | 2019/02/25 16:00 | Lucas Miedler v Cem Ilkel | 6-4,6-3 |
| Bergamo, Italy | 2019/02/20 18:00 | Cem Ilkel v Stefano Napolitano | 3-6,4-6 |
| Challenger Seoul | 2019/05/01 02:00 | Nam, Ji Sung v Ramkumar Ramanathan | 3-6,6-7 |
| Challenger Seoul | 2019/04/30 03:35 | Nam, Ji Sung v Duckhee Lee | 7-5,6-1 |
| Challenger Seoul | 2019/04/29 02:00 | Nam, Ji Sung v Son, Ji Hoon | 6-3,6-2 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/12 01:00 | Nam, Ji Sung v Brymer, Gage | 3-6,3-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/09 04:55 | Nam, Ji Sung v Mark Whitehouse | 7-6,6-2 |
| ITF - M15 Kashiwa | 2019/04/03 06:15 | Jumpei Yamasaki v Nam, Ji Sung | 6-3,2-6,7-6 |
| ITF - M15 Nishi-Tokyo | 2019/03/15 02:20 | Ehara, Hiroyasu v Nam, Ji Sung | 6-3,3-6,7-6 |
| ITF - M15 Nishi-Tokyo | 2019/03/14 01:00 | Song, Min-Kyu v Nam, Ji Sung | 4-6,3-6 |