stadio: Court 12 Round: 25 Ground: Hardcourt outdoor
| ITF Giappone F1 | 2017/03/07 02:30 | Issei Okamura v Yuki Mochizuki | 2-6,4-6 |
| ITF Hong Kong F3 | 2018/12/24 02:00 | Issei Okamura v Taisei Ichikawa | 6-2,7-5 |
| ITF Hong Kong F3 | 2018/12/22 02:00 | Issei Okamura v Kyle Lok Yin Tang | 6-1,6-1 |
| Challenger Kobe | 2018/11/11 03:35 | Jacob Grills v Issei Okamura | 1-6,6-4,6-3 |
| Challenger Kobe | 2018/11/10 03:25 | Yuichi Ito v Issei Okamura | 4-6,7-6,3-6 |
| ITF Australia F8 | 2018/10/09 00:00 | Moerani Bouzige v Issei Okamura | 7-5,6-1 |
| ITF Australia F7 | 2018/10/04 03:55 | Benjamin Mitchell v Issei Okamura | 6-4,1-6,6-1 |
| ITF Australia F7 | 2018/10/02 00:00 | Issei Okamura v Vincent Stouff | 6-4,6-4 |
| ITF Australia F6 | 2018/09/25 00:30 | Connor Farren v Issei Okamura | 3-6,7-6,6-2 |
| Challenger Kobe | 2018/11/11 02:00 | Andrew Harris v Yuki Mochizuki | 6-4,6-0 |
| Challenger Kobe | 2018/11/10 02:00 | Yuki Mochizuki v Naoki Nakagawa | 6-1,6-7,6-2 |
| ITF Hong Kong F2 | 2018/07/02 04:00 | Yuki Mochizuki v Shintaro Imai | 6-4,5-7,3-6 |
| ITF Hong Kong F1 | 2018/06/30 02:00 | Yuki Mochizuki v Hong Kit Wong | 4-6,6-2,6-1 |
| ITF Hong Kong F1 | 2018/06/29 02:00 | Jumpei Yamasaki v Yuki Mochizuki | 4-6,4-6 |
| ITF Hong Kong F1 | 2018/06/28 02:00 | Haru Inoue v Yuki Mochizuki | 3-6,1-6 |
| ITF Hong Kong F1 | 2018/06/27 02:00 | Chun Hun Wong v Yuki Mochizuki | 3-6,2-6 |
| ITF Hong Kong F1 | 2018/06/26 02:00 | Yuki Mochizuki v Yuta Shimizu | 3-6,6-4,6-4 |