Stadium: Court 4 Round: 26
| ITF Singapore F2 | 2018/05/22 02:00 | Hovhannisyan, Mousheg v Shaheed Alam | 6-2,6-2 |
| ITF Singapore F2 | 2018/05/20 10:00 | Farren, Connor v Hovhannisyan, Mousheg | 6-1,3-6,4-6 |
| ITF Singapore F1 | 2018/05/17 05:25 | Hovhannisyan, Mousheg v Moerani Bouzige | 6-4,6-4 |
| ITF Singapore F1 | 2018/05/16 02:00 | Nkomba, Benard Bruno v Hovhannisyan, Mousheg | 5-7,0-6 |
| ITF Singapore F1 | 2018/05/14 02:00 | Hovhannisyan, Mousheg v Onoda, Ken | 6-0,6-1 |
| ITF China F5 Qual | 2018/05/07 06:30 | Hovhannisyan, Mousheg v Ye Cong Mo | 1-6,7-6,1-6 |
| ITF China F5 Qual | 2018/05/07 04:10 | Hovhannisyan, Mousheg v Ji, Ang | 6-1,6-2 |
| ITF China F5 Qual | 2018/05/05 05:30 | Hovhannisyan, Mousheg v Wellington Bastos | 6-0,6-0 |
| ITF Singapore F2 | 2018/05/22 02:00 | Susanto, David Agung v Makoto Ochi | 1-6,0-6 |
| 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 |