| Challenger Jinan |
08/05 02:00 |
46 |
Chien-Hsun Lo
v
Issei Okamura
|
6-7,1-6
|
|
| Challenger Jinan |
08/04 07:30 |
45 |
Issei Okamura
v
Dzmitry Zhyrmont
|
Retired
|
|
| Challenger Chengdu Qual |
07/28 03:35 |
45 |
Issei Okamura
v
Blake Ellis
|
6-4,1-6,5-7
|
|
| ITF Chinese Taipei F2 |
07/26 02:00 |
26 |
Issei Okamura
v
Chun Hsin Tseng
|
3-6,4-6
|
|
| ITF Chinese Taipei F2 |
07/24 02:00 |
25 |
Issei Okamura
v
Liang Yu Richard Lin
|
6-2,6-2
|
|
| ITF Chinese Taipei F1 |
07/19 04:05 |
26 |
Yu Hsiou Hsu
v
Issei Okamura
|
7-6,7-5
|
|
| ITF Chinese Taipei F1 |
07/18 03:50 |
25 |
Issei Okamura
v
Francesco Vilardo
|
7-5,6-4
|
|
| ITF Hong Kong F2 |
07/05 02:00 |
27 |
Issei Okamura
v
Shintaro Imai
|
2-6,1-6
|
|
| ITF Hong Kong F2 |
07/04 02:00 |
26 |
Sidharth Rawat
v
Issei Okamura
|
6-0,5-7,2-6
|
|
| ITF Hong Kong F2 |
07/02 02:00 |
25 |
Ching Lam
v
Issei Okamura
|
1-6,4-6
|
|
| ITF Hong Kong F1 |
06/28 02:00 |
27 |
Hong Kit Wong
v
Issei Okamura
|
7-5,6-4
|
|
| ITF Hong Kong F1 |
06/27 04:25 |
26 |
Issei Okamura
v
Kazuki Nishiwaki
|
Retired
|
|
| ITF Hong Kong F1 |
06/25 04:35 |
25 |
Jeson Patrombon
v
Issei Okamura
|
4-6,2-6
|
|
| ITF Japan F8 |
06/13 04:40 |
25 |
Issei Okamura
v
Rio Noguchi
|
4-6,3-6
|
|
| ITF Japan F7 |
06/05 01:00 |
25 |
Sora Fukuda
v
Issei Okamura
|
6-3,6-1
|
|
| ITF China F6 |
05/14 07:00 |
25 |
Issei Okamura
v
Shi Hong Zeng
|
2-6,3-6
|
|
| ITF Vietnam F2 |
05/08 04:20 |
25 |
Issei Okamura
v
Lucas Vuradin
|
6-7,2-6
|
|
| ITF Vietnam F1 |
04/30 04:45 |
25 |
Issei Okamura
v
Rio Noguchi
|
5-7,5-7
|
|
| ITF Japan F6 |
04/10 03:10 |
25 |
Kazuki Nishiwaki
v
Issei Okamura
|
6-2,7-5
|
|
| ITF Japan F6 Qual |
04/09 01:00 |
62 |
Issei Okamura
v
Yuto Sakai
|
6-2,6-3
|
|
| ITF Japan F6 Qual |
04/08 01:00 |
62 |
Issei Okamura
v
Hikaru Shiraishi
|
6-4,6-3
|
|
| ITF Japan F5 |
03/31 03:30 |
54 |
Issei Okamura
v
Yuta Kawahashi
|
3-6,1-6
|
|
| ITF Japan F4 |
03/26 01:00 |
62 |
Issei Okamura
v
Shao-Fan Liu
|
3-6,5-7
|
|
| ITF Japan F4 |
03/24 04:00 |
62 |
Issei Okamura
v
Kousuke Ogura
|
6-3,7-5
|
|
| ITF Japan F3 |
03/19 06:40 |
25 |
Issei Okamura
v
Makoto Ochi
|
6-7,3-6
|
|
| ITF Japan F3 |
03/18 01:30 |
44 |
Issei Okamura
v
Masaki Sasai
|
6-3,6-1
|
|
| ITF Japan F3 |
03/17 04:00 |
44 |
Issei Okamura
v
Arata Onozawa
|
7-6,6-0
|
|
| ITF Japan F2 |
03/15 02:35 |
26 |
Issei Okamura
v
Kaito Uesugi
|
4-6,5-7
|
|
| ITF Japan F2 |
03/13 00:30 |
25 |
Issei Okamura
v
Rimpei Kawakami
|
6-2,6-4
|
|
| ITF Japan F2 |
03/12 00:30 |
44 |
Issei Okamura
v
Kaito Itsusaki
|
6-4,6-1
|
|