Stadium: Court 3 Round: 45
| Challenger Gimcheon | 2018/05/11 02:00 | Yoshihito Nishioka v Makoto Ochi | 6-2,6-2 |
| Challenger Gimcheon | 2018/05/10 02:00 | Makoto Ochi v Luke Saville | 4-6,6-1,7-6 |
| Challenger Gimcheon | 2018/05/08 05:40 | Lee, Young Seok v Makoto Ochi | 1-6,1-6 |
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Makoto Ochi v Luke Saville | 2-6,6-3,7-6 |
| Challenger Gimcheon Qual | 2018/05/06 04:30 | Ehara, Hiroyasu v Makoto Ochi | 7-6,3-6,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 02:50 | Lee, Tae-Woo v Makoto Ochi | 4-6,1-6 |
| Challenger Seoul | 2018/05/01 03:00 | Makoto Ochi v Jason Jung | 4-6,0-6 |
| Challenger Seoul Qual | 2018/04/30 03:00 | Luke Saville v Makoto Ochi | 6-7,3-6 |
| Challenger Seoul Qual | 2018/04/28 04:30 | Lim, Yong-Kyu v Nielsen, Frederik | 6-4,6-1 |
| Coupe Davis | 2018/04/07 10:00 | Nielsen, Frederik v Karim-Mohamed Maamoun | 6-3,3-6,6-7 |
| Challenger Drummondville Qual | 2018/03/12 22:55 | Nielsen, Frederik v Aleksandar Vukic | 2-6,4-6 |
| Challenger Drummondville Qual | 2018/03/11 17:15 | Nielsen, Frederik v Krainik, Pavel | View |
| Canada F2, Singles | 2018/03/06 15:00 | Nielsen, Frederik v Hiltzik, Jared | 4-6,6-4,2-6 |
| ITF Canada F2 Qual | 2018/03/05 14:30 | Nielsen, Frederik v Rodriguez-Pace, Ricardo | 3-6,6-3,6-4 |
| ITF Canada F2 Qual | 2018/03/04 15:00 | Nielsen, Frederik v Martinez, Luis David | 6-3,6-4 |
| ITF Canada F1 | 2018/02/27 16:00 | Baughman, Deiton v Nielsen, Frederik | 6-3,6-3 |