| ITF Thailand F4 | 2016/08/25 03:00 | Ti Chen v Issei Okamura | 6-1,6-0 |
| ITF M15 Anning | 2019/01/04 03:00 | Ti Chen v Eric Vanshelboim | 0-6,2-6 |
| ITF M15 Anning | 2019/01/03 02:00 | Ti Chen v Taisei Ichikawa | 6-2,3-6,6-3 |
| ITF M15 Anning | 2019/01/02 02:00 | Ti Chen v Anirudh Chandrasekar | 4-6,6-1,6-4 |
| ITF Pakistan F1 | 2018/12/06 06:00 | Ti Chen v Muhammad Abid | 6-1,6-3 |
| ITF Pakistan F1 | 2018/12/05 07:45 | Ti Chen v Ahmed Choudhary | 6-3,6-1 |
| ITF Pakistan F1 | 2018/12/04 05:00 | Ti Chen v Aqeel Khan | 6-4,3-6,6-2 |
| Challenger Shanghai | 2018/09/09 03:00 | Ti Chen v N. Vijay Sundar Prashanth | 7-5,2-6,4-6 |
| Challenger Shanghai | 2018/09/08 06:20 | Kuan-Yi Lee v Ti Chen | 5-7,4-6 |
| ITF M15 Anning | 2019/01/01 04:40 | Tao Mu v Issei Okamura | 3-6,6-2,7-5 |
| ITF Hong Kong F3 | 2018/12/26 03:00 | Riccardo Bonadio v Issei Okamura | 6-3,7-5 |
| ITF Hong Kong F3 | 2018/12/25 09:35 | Issei Okamura v Yuki Mochizuki | 7-6,7-6 |
| 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 |