Name: Issei Okamura
Country: Japan
Birthdate: 26.05.92, 31 years
ATP ranking: 870
TOP ranking's position: 574 (08.08.16, 55 points)
Points: 15
Prize money: 59670 $
Matches total: 443
Win: 211
%: 47.63 %
Country: Japan
Birthdate: 26.05.92, 31 years
ATP ranking: 870
TOP ranking's position: 574 (08.08.16, 55 points)
Points: 15
Prize money: 59670 $
Matches total: 443
Win: 211
%: 47.63 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 8/9 | 8/9 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2023 | 18/24 | 17/18 | 0/4 | 1/2 | 0/0 | 0/0 | 0/0 |
| 2022 | 12/14 | 11/12 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2021 | 8/10 | 8/8 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 11/11 | 11/11 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 18/26 | 13/22 | 1/2 | 0/0 | 0/0 | 4/2 | 0/0 |
| 2018 | 28/27 | 23/21 | 4/4 | 1/1 | 0/1 | 0/0 | 0/0 |
| 2017 | 14/32 | 11/19 | 2/8 | 0/2 | 1/3 | 0/0 | 0/0 |
| 2016 | 33/33 | 19/22 | 13/7 | 0/2 | 1/2 | 0/0 | 0/0 |
| 2015 | 40/27 | 31/21 | 9/5 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2014 | 7/10 | 5/5 | 0/2 | 0/1 | 2/2 | 0/0 | 0/0 |
| 2013 | 12/7 | 12/6 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2012 | 2/2 | 1/1 | 1/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 211/232 | 170/175 | 31/37 | 2/9 | 4/9 | 4/2 | 0/0 |
| perc. % | 47.63 % | 49.28 % | 45.59 % | 18.18 % | 30.77 % | 66.67 % | 0 % |
Issei Okamura / scheduled / last
| no matches found |
Issei Okamura form / year 2015
Issei Okamura / year 2015
| 30.11.15 | 2nd round | Kittiphong Wachiramanowong | Issei Okamura | 3-6, 6-4, 6-3 |  | match details |  Thailand F9 | Hard |
| 30.11.15 | 1st round | Issei Okamura | Warit Sornbutnark | 6-2, 6-2 |  | match details | ||
| 23.11.15 | 1st round | Pruchya Isarow | Issei Okamura | 6-2, 6-4 | | match details | Thailand F8 | Hard |
| 16.11.15 | 1st round | Issei Okamura | Adam Taylor | 7-5, 3-6, 7-63 | | match details |  Australia F11 | Hard |
| 16.11.15 | 2nd round | Dayne Kelly | Issei Okamura | 6-4, 6-0 | | match details | ||
| 09.11.15 | 1st round | Harry Bourchier | Issei Okamura | 6-2, 6-72, 6-3 | | match details | Australia F10 | Hard |
| 12.10.15 | 1st round | Issei Okamura | Ilya Vasilyev | 6-2, 2-6, 6-4 | | match details |  Philippines F2 | Clay |
| 12.10.15 | 2nd round | Ching-Mou Yu | Issei Okamura | 6-3, 6-2 | | match details | ||
| 05.10.15 | 1st round | Issei Okamura | Kaza Vinayak Sharma | 5-7, 6-0, 6-1 | | match details | Philippines F1 | Clay |
| 05.10.15 | 1/4 | Kento Takeuchi | Issei Okamura | 6-1, 7-5 | | match details | ||
| 05.10.15 | 2nd round | Issei Okamura | Katsuki Nagao | 6-4, 6-4 | | match details | ||
| 29.08.15 | q 1 | Sho Katayama | Issei Okamura | 6-1, 6-1 | | match details | Bangkok Challenger | Hard |
| 24.08.15 | 1st round | Issei Okamura | Shao-Fan Liu | 6-3, 6-4 | | match details | .png){kind=small} Chinese Taipei | Hard |
| 24.08.15 | 2nd round | Yan Bai | Issei Okamura | 6-2, 6-1 | | match details | ||
| 17.08.15 | qual. | Issei Okamura | Wen-Yao Liang | 6-2, 6-0 | | match details | Chinese Taipei | Hard |
| 17.08.15 | 2nd round | Issei Okamura | Masato Shiga | 6-4, 6-4 | | match details | ||
| 17.08.15 | 1st round | Issei Okamura | Chieh-Fu Wang | 6-77, 6-2, 2-0, Chieh-Fu Wang - retired | | match details | ||
| 17.08.15 | 1/2 | Tsung-Hua Yang | Issei Okamura | 6-0, 6-1 | | match details | ||
| 17.08.15 | 1/4 | Issei Okamura | Ryota Tanuma | 6-4, 3-6, 6-3 | | match details | ||
| 17.08.15 | q 1 | Issei Okamura | Chak Yin Chan | 6-2, 7-60 | | match details | ||
| 10.08.15 | qual. | Issei Okamura | Roy Hobbs | 6-2, 6-1 | | match details | Thailand F7 | Hard |
| 10.08.15 | 1st round | Daniel Hobart | Issei Okamura | 6-2, 6-4 | | match details | ||
| 10.08.15 | q 1 | Issei Okamura | Rapeephat Waewboot | 6-3, 6-3 | | match details | ||
| 03.08.15 | 2nd round | Issei Okamura | Jirat Navasirisomboon | 7-64, 7-5 | | match details | Thailand F6 | Hard |
| 03.08.15 | 1/4 | Vishnu Vardhan | Issei Okamura | 6-3, 6-4 | | match details | ||
| 03.08.15 | q 1 | Issei Okamura | Aditya Deswal | 6-2, 6-2 | | match details | ||
| 03.08.15 | qual. | Issei Okamura | Thuwanon Pattananawapong | 6-1, 6-1 | | match details | ||
| 03.08.15 | 1st round | Issei Okamura | Shao-Fan Liu | 6-4, 6-2 | | match details | ||
| 22.06.15 | 1st round | Issei Okamura | Ken Onishi | 6-4, 2-6, 6-1 | | match details | Thailand F5 | Hard |
| 22.06.15 | qual. | Issei Okamura | Teeradon Tortrakul | 6-74, 6-4, 6-1 | | match details | ||
| 22.06.15 | 2nd round | Hiroki Kondo | Issei Okamura | 6-1, 6-2 | | match details | ||
| 15.06.15 | qual. | Zach Itzstein | Issei Okamura | 3-6, 7-5, 7-5 | | match details | Thailand F4 | Hard |
| 15.06.15 | q 1 | Issei Okamura | Chirayu Limpatum | 6-1, 6-1 | | match details | ||
| 08.06.15 | 2nd round | Duckhee Lee | Issei Okamura | 6-1, 6-4 | | match details |  Japan F6 | Hard |
| 08.06.15 | q 2 | Issei Okamura | Hiroki Yamaguchi | 6-0, 6-0 | | match details | ||
| 08.06.15 | qual. | Issei Okamura | Yuichiro Inui | 6-3, 6-1 | | match details | ||
| 08.06.15 | 1st round | Issei Okamura | Koichi Sano | 6-2, 6-4 | | match details | ||
| 01.06.15 | q 1 | Issei Okamura | Shota Iino | 6-3, 2-6, 6-4 | | match details | Japan F5 | Clay |
| 01.06.15 | qual. | Issei Okamura | Yusuke Yoshikawa | 6-0, 3-6, 6-3 | | match details | ||
| 01.06.15 | 1st round | Ryota Tanuma | Issei Okamura | 7-60, 6-4 | | match details | ||
| 04.05.15 | 1st round | Issei Okamura | Sidharth Rawat | 6-4, 5-7, 7-611 | | match details | Thailand F3 | Hard |
| 04.05.15 | 2nd round | Tyler Hochwalt | Issei Okamura | 6-3, 1-6, 6-2 | | match details | ||
| 04.05.15 | q 1 | Issei Okamura | Ken Onoda | 6-2, 6-4 | | match details | ||
| 04.05.15 | qual. | Issei Okamura | Kelsey Stevenson | 7-60, 6-4 | | match details | ||
| 27.04.15 | q 1 | Andre Dome | Issei Okamura | 6-1, 6-2 | | match details | Thailand F2 | Hard |
| 20.04.15 | q 2 | Issei Okamura | Jun Nan Tao | 6-4, 6-4 | | match details |  China F4 | Hard |
| 20.04.15 | 1st round | Chuhan Wang | Issei Okamura | 6-4, 6-4 | | match details | ||
| 20.04.15 | qual. | Issei Okamura | Ruikai Wang | 6-3, 6-4 | | match details | ||
| 13.04.15 | q 2 | Issei Okamura | Danyal Sualehe | 6-3, 6-1 | | match details | China F3 | Clay |
| 13.04.15 | qual. | Issei Okamura | Shobu Ijima | 6-4, 7-62 | | match details | ||
| 13.04.15 | 1st round | Aoxiong Wang | Issei Okamura | 4-6, 6-2, 6-3 | | match details | ||
| 06.04.15 | 1st round | Yan Bai | Issei Okamura | 6-0, 6-1 | | match details | China F2 | Clay |
| 06.04.15 | q 2 | Issei Okamura | Jinghu Zhang | 7-5, 6-0 | | match details | ||
| 06.04.15 | qual. | Issei Okamura | Zuxin Zheng | 6-0, 7-61 | | match details | ||
| 30.03.15 | q 1 | Issei Okamura | Taiki Hashimoto | 6-73, 6-1, 6-1 | | match details | Japan F4 | Hard |
| 30.03.15 | q 2 | Seong Chan Hong | Issei Okamura | 6-3, 6-3 | | match details | ||
| 23.03.15 | q 2 | David Sofaer | Issei Okamura | 6-4, 7-5 | | match details | Japan F3 | Hard |
| 23.03.15 | q 1 | Issei Okamura | Keisuke Watanuki | 6-2, 6-3 | | match details | ||
| 16.03.15 | qual. | Masaki Sasai | Issei Okamura | 6-3, 6-0 | | match details | Japan F2 | Hard |
| 16.03.15 | q 1 | Issei Okamura | Yuma Otomo | 6-2, 6-3 | | match details | ||
| 09.03.15 | q 2 | Issei Okamura | Takahiro Inoue | 6-3, 6-2 | | match details | Japan F1 | Hard |
| 09.03.15 | q 1 | Issei Okamura | Yusuke Yoshikawa | 6-0, 6-2 | | match details | ||
| 09.03.15 | qual. | Shintaro Imai | Issei Okamura | 6-0, 6-1 | | match details | ||
| 24.02.15 | 1st round | Hiroki Kondo | Issei Okamura | 6-1, 6-3 | | match details | Kyoto Challenger | I. hard |
| 07.02.15 | q 2 | Alexander Sarkissian | Issei Okamura | 6-1, 6-1 | | match details | Launceston Challenger | Hard |
| 31.01.15 | q 2 | Andrew Whittington | Issei Okamura | 6-1, 6-1 | | match details | Burnie Challenger | Hard |
| 31.01.15 | q 1 | Issei Okamura | Alexander Klintcharov | 6-2, 5-7, 7-5 | | match details |
