Ime: Issei Okamura
Država: Japan
Datum rođenja: 26.05.92, 31 Godina
ATP ljestvica: 870
TOP pozicija na ljestvici: 574 (08.08.16, 55 bodovi)
Bodovi: 15
Premije: 59670 $
Mečeva ukupno: 443
Pobjede: 211
Uspješnost: 47.63 %
Država: Japan
Datum rođenja: 26.05.92, 31 Godina
ATP ljestvica: 870
TOP pozicija na ljestvici: 574 (08.08.16, 55 bodovi)
Bodovi: 15
Premije: 59670 $
Mečeva ukupno: 443
Pobjede: 211
Uspješnost: 47.63 %
| godina | rezime | tvrda | zemlja | dvorana | tepih | trava | akril |
| 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 |
| UKUPNO | 211/232 | 170/175 | 31/37 | 2/9 | 4/9 | 4/2 | 0/0 |
| uspj. % | 47.63 % | 49.28 % | 45.59 % | 18.18 % | 30.77 % | 66.67 % | 0 % |
Issei Okamura / neodigrani / posljednji
| nije pronađen nikakav meč |
Issei Okamura form / godina 2016 / podloga: zemlja
Issei Okamura / godina 2016 / podloga: zemlja
| 23.07.16 | Finale | Thomas Fancutt | Issei Okamura | 6-2, 6-4 |  | detalj meča |  China F13 | zemlja |
| 22.07.16 | Polufinale | Issei Okamura | Ryota Tanuma | 6-3, 7-65 |  | detalj meča | ||
| 20.07.16 | 2. kolo | Issei Okamura | Koichi Sano | 6-0, 6-2 | | detalj meča | ||
| 20.07.16 | Četvrtfinale | Issei Okamura | Ranjeet Virali-Murugesan | 6-4, 6-3 | | detalj meča | ||
| 19.07.16 | 1. kolo | Issei Okamura | Ye Cong Mo | 6-2, 6-3 | | detalj meča | ||
| 16.07.16 | Polufinale | Kuan-Yi Lee | Issei Okamura | 7-62, 6-4 | | detalj meča | China F12 | zemlja |
| 15.07.16 | Četvrtfinale | Issei Okamura | Mitchell William Robins | 6-3, 5-7, 6-1 | | detalj meča | ||
| 14.07.16 | 2. kolo | Issei Okamura | Seungri Choi | 6-2, 6-78, 7-65 | | detalj meča | ||
| 12.07.16 | 1. kolo | Issei Okamura | Wei-De Lin | 6-1, 6-4 | | detalj meča | ||
| 09.07.16 | Polufinale | Bastian Trinker | Issei Okamura | 6-3, 6-4 | | detalj meča | China F11 | zemlja |
| 08.07.16 | Četvrtfinale | Issei Okamura | Rigele Te | 6-3, 6-4 | | detalj meča | ||
| 06.07.16 | 2. kolo | Issei Okamura | Kazuma Kawachi | 6-3, 6-3 | | detalj meča | ||
| 05.07.16 | 1. kolo | Issei Okamura | Wen-Chun Liang | 6-3, 6-4 | | detalj meča | ||
| 31.05.16 | 1. kolo | Ko Suzuki | Issei Okamura | 6-1, 6-3 | | detalj meča |  Japan F6 | zemlja |
| 16.05.16 | 1. kolo | Ryota Tanuma | Issei Okamura | 6-0, 6-3 | | detalj meča |  Spain F14 | zemlja |
| 12.05.16 | 2. kolo | Juan Lizariturry | Issei Okamura | 7-5, 7-5 | | detalj meča | Spain F13 | zemlja |
| 11.05.16 | 1. kolo | Issei Okamura | Andrey Chepelev | 3-6, 6-4, 7-65 | | detalj meča | ||
| 09.05.16 | 1. kolo kval. | Issei Okamura | Brandon Levendale | 6-2, 6-1 | | detalj meča | ||
| 09.05.16 | kval. | Thibault Cancel | Issei Okamura | 4-6, 7-5, 6-4 | | detalj meča | ||
| 09.05.16 | 2. kolo kval. | Issei Okamura | Adria Vila-Rutllant | 6-1, 6-3 | | detalj meča |
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