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 2016
Issei Okamura / year 2016
| 20.12.16 | 1st round | Wishaya Trongcharoenchaikul | Issei Okamura | 6-2, 7-67 |  | match details |  Thailand F5 | Hard |
| 13.12.16 | 1st round | Kittiphong Wachiramanowong | Issei Okamura | 6-0, 6-0 | | match details | Thailand F4 | Hard |
| 07.12.16 | 1st round | David Agung Susanto | Issei Okamura | 6-1, 6-4 | | match details |  Indonesia F5 | Hard |
| 30.11.16 | 1st round | Shintaro Imai | Issei Okamura | 5-5, Issei Okamura - retired | | match details | Indonesia F4 | Hard |
| 12.11.16 | q 1 | Issei Okamura | Soichiro Moritani | 7-5, 6-2 |  | match details |  Toyota Challenger | Carpet |
| 12.11.16 | q 2 | Sergey Betov | Issei Okamura | 4-6, 7-5, 6-3 | | match details | ||
| 05.11.16 | q 1 | Masato Shiga | Issei Okamura | 6-3, 6-1 | | match details | Kobe Challenger | I. hard |
| 11.10.16 | 1st round | Tung-Lin Wu | Issei Okamura | 6-2, 3-6, 6-2 | | match details | .png){kind=small} Chinese Taipei | Hard |
| 22.09.16 | 2nd round | Shinta Fujii | Issei Okamura | 6-3, 7-63 | | match details |  Vietnam F5 | Hard |
| 20.09.16 | 1st round | Issei Okamura | Ren Nakamura | 6-2, 6-3 | | match details | ||
| 16.09.16 | 1/4 | Yuichi Ito | Issei Okamura | 6-2, 4-6, 6-4 | | match details | Vietnam F4 | Hard |
| 15.09.16 | 2nd round | Issei Okamura | Seungri Choi | 6-4, 6-3 | | match details | ||
| 13.09.16 | 1st round | Issei Okamura | Chan-Yeong Oh | 7-66, 6-3 | | match details | ||
| 07.09.16 | 2nd round | Jumpei Yamasaki | Issei Okamura | 4-6, 6-2, 6-4 | | match details | Thailand F3 | Hard |
| 04.09.16 | 1st round | Issei Okamura | Natthasith Kunsuwan | 6-2, 6-4 | | match details | ||
| 28.08.16 | 1st round | Renta Tokuda | Issei Okamura | 6-4, 6-1 | | match details | Thailand F2 | Hard |
| 24.08.16 | 2nd round | Issei Okamura | Phassawit Burapharitta | 6-3, 6-4 | | match details | Thailand F1 | Hard |
| 24.08.16 | 1/4 | Ti Chen | Issei Okamura | 6-1, 6-0 | | match details | ||
| 21.08.16 | 1st round | Issei Okamura | N. Vijay Sundar Prashanth | 6-2, 4-6, 6-4 | | match details | ||
| 23.07.16 | fin | Thomas Fancutt | Issei Okamura | 6-2, 6-4 | | match details |  China F13 | Clay |
| 22.07.16 | 1/2 | Issei Okamura | Ryota Tanuma | 6-3, 7-65 | | match details | ||
| 20.07.16 | 2nd round | Issei Okamura | Koichi Sano | 6-0, 6-2 | | match details | ||
| 20.07.16 | 1/4 | Issei Okamura | Ranjeet Virali-Murugesan | 6-4, 6-3 | | match details | ||
| 19.07.16 | 1st round | Issei Okamura | Ye Cong Mo | 6-2, 6-3 | | match details | ||
| 16.07.16 | 1/2 | Kuan-Yi Lee | Issei Okamura | 7-62, 6-4 | | match details | China F12 | Clay |
| 15.07.16 | 1/4 | Issei Okamura | Mitchell William Robins | 6-3, 5-7, 6-1 | | match details | ||
| 14.07.16 | 2nd round | Issei Okamura | Seungri Choi | 6-2, 6-78, 7-65 | | match details | ||
| 12.07.16 | 1st round | Issei Okamura | Wei-De Lin | 6-1, 6-4 | | match details | ||
| 09.07.16 | 1/2 | Bastian Trinker | Issei Okamura | 6-3, 6-4 | | match details | China F11 | Clay |
| 08.07.16 | 1/4 | Issei Okamura | Rigele Te | 6-3, 6-4 | | match details | ||
| 06.07.16 | 2nd round | Issei Okamura | Kazuma Kawachi | 6-3, 6-3 | | match details | ||
| 05.07.16 | 1st round | Issei Okamura | Wen-Chun Liang | 6-3, 6-4 | | match details | ||
| 15.06.16 | 1st round | Yusuke Takahashi | Issei Okamura | 6-3, 6-0 | | match details | Japan F8 | Carpet |
| 05.06.16 | 1st round | Kento Takeuchi | Issei Okamura | 6-2, 6-3 | | match details | Japan F7 | Hard |
| 31.05.16 | 1st round | Ko Suzuki | Issei Okamura | 6-1, 6-3 | | match details | Japan F6 | Clay |
| 25.05.16 | 1st round | Bernabe Zapata Miralles | Issei Okamura | 6-3, 6-2 | | match details |  Spain F15 | Hard |
| 16.05.16 | 1st round | Ryota Tanuma | Issei Okamura | 6-0, 6-3 | | match details | Spain F14 | Clay |
| 12.05.16 | 2nd round | Juan Lizariturry | Issei Okamura | 7-5, 7-5 | | match details | Spain F13 | Clay |
| 11.05.16 | 1st round | Issei Okamura | Andrey Chepelev | 3-6, 6-4, 7-65 | | match details | ||
| 09.05.16 | qual. | Thibault Cancel | Issei Okamura | 4-6, 7-5, 6-4 | | match details | ||
| 09.05.16 | q 1 | Issei Okamura | Brandon Levendale | 6-2, 6-1 | | match details | ||
| 09.05.16 | q 2 | Issei Okamura | Adria Vila-Rutllant | 6-1, 6-3 | | match details | ||
| 06.05.16 | 1/4 | Hugo Nys | Issei Okamura | 6-0, 6-3 | | match details |  Turkey F18 | Hard |
| 05.05.16 | 2nd round | Issei Okamura | Mikelis Libietis | 6-3, 6-2 | | match details | ||
| 03.05.16 | 1st round | Issei Okamura | Marcelo Tebet Filho | 7-5, 6-4 | | match details | ||
| 28.04.16 | 2nd round | Marc Sieber | Issei Okamura | 5-7, 6-2, 6-0 | | match details | Turkey F17 | Hard |
| 26.04.16 | 1st round | Issei Okamura | Marek Jaloviec | 2-6, 7-64, 6-2 | | match details | ||
| 14.04.16 | 2nd round | Shuichi Sekiguchi | Issei Okamura | 6-2, 6-2 | | match details | China F5 | Hard |
| 12.04.16 | 1st round | Issei Okamura | Aoran Wang | 6-3, 6-1 | | match details | ||
| 05.04.16 | 1st round | Yuya Ito | Issei Okamura | 6-0, 6-3 | | match details | Japan F5 | Hard |
| 31.03.16 | 2nd round | Finn Tearney | Issei Okamura | 6-3, 6-2 | | match details | Japan F4 | Hard |
| 30.03.16 | 1st round | Issei Okamura | Kittiphong Wachiramanowong | 6-4, 6-2 | | match details | ||
| 17.03.16 | 2nd round | Sidharth Rawat | Issei Okamura | 6-4, 1-6, 7-64 | | match details | Japan F2 | Hard |
| 15.03.16 | 1st round | Issei Okamura | Young Seok Kim | 6-76, 6-3, 6-4 | | match details | ||
| 12.03.16 | 1/2 | Liang-Chi Huang | Issei Okamura | 6-3, 6-4 | | match details | Japan F1 | Hard |
| 11.03.16 | 1/4 | Issei Okamura | Karunuday Singh | 6-3, 6-2 | | match details | ||
| 10.03.16 | 2nd round | Issei Okamura | Sidharth Rawat | 6-2, 6-4 | | match details | ||
| 09.03.16 | 1st round | Issei Okamura | Kento Takeuchi | 7-63, 7-61 | | match details | ||
| 20.02.16 | q 1 | Andriej Kapas | Issei Okamura | 6-4, 6-2 | | match details | Kyoto Challenger | I. hard |
| 12.02.16 | 1/4 | Seong Chan Hong | Issei Okamura | 5-7, 6-4, 6-3 | | match details | Turkey F6 | Hard |
| 11.02.16 | 2nd round | Issei Okamura | Patrik Nema | 6-1, 7-5 | | match details | ||
| 09.02.16 | 1st round | Issei Okamura | Maxime Pauwels | 3-6, 6-3, 6-3 | | match details | ||
| 04.02.16 | 2nd round | Lenny Hampel | Issei Okamura | 1-6, 6-0, 7-67 | | match details | Turkey F5 | Hard |
| 02.02.16 | 1st round | Issei Okamura | Mert Zincirli | 6-4, 6-2 | | match details | ||
| 25.01.16 | q 2 | Issei Okamura | Peter Balla | 6-2, 6-2 | | match details | Turkey F4 | Hard |
| 25.01.16 | qual. | Ryota Kishi | Issei Okamura | 6-2, 2-6, 6-1 | | match details |