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 2020
Issei Okamura / godina 2020
| 09.11.20 | 2. kolo kval. | Andres Gabriel Ciurletti | Issei Okamura | 4-6, 6-4, 11-9 |  | detalj meča |  M15 Sharm | tvrda |
| 08.11.20 | 1. kolo kval. | Issei Okamura | Shahar Gabay | 6-0, 6-1 |  | detalj meča | ||
| 03.11.20 | kval. | Marat Deviatiarov | Issei Okamura | 6-0, 6-1 | | detalj meča | M15 Sharm | tvrda |
| 02.11.20 | 2. kolo kval. | Issei Okamura | Alec Beckley | 6-3, 6-2 | | detalj meča | ||
| 02.11.20 | 1. kolo kval. | Issei Okamura | Leo Borg | 6-1, 6-4 | | detalj meča | ||
| 25.10.20 | 1. kolo kval. | Max Houkes | Issei Okamura | 6-2, 4-6, 10-5 | | detalj meča | M15 Sharm | tvrda |
| 18.10.20 | 1. kolo kval. | Max Houkes | Issei Okamura | 7-65, 2-6, 10-5 | | detalj meča | M15 Sharm | tvrda |
| 13.09.20 | 1. kolo kval. | Arnaud Bovy | Issei Okamura | 6-0, 6-0 | | detalj meča |  M15 Sintra | tvrda |
| 07.09.20 | 2. kolo kval. | Joao Lucas Reis Da Silva | Issei Okamura | 7-5, 7-63 | | detalj meča | M15 Sintra | tvrda |
| 06.09.20 | 1. kolo kval. | Issei Okamura | Tennyson Whiting | 6-4, 6-4 | | detalj meča | ||
| 11.03.20 | 1. kolo | Issei Okamura | Noah Thurner | 6-1, 6-4 | | detalj meča | M15 Sharm | tvrda |
| 03.03.20 | kval. | Vladimir Uzhylovsky | Issei Okamura | 6-76, 6-4, 10-6 | | detalj meča | M15 Sharm | tvrda |
| 02.03.20 | 2. kolo kval. | Issei Okamura | Jarno Jans | 6-2, 6-4 | | detalj meča | ||
| 26.02.20 | 1. kolo | Ryota Tanuma | Issei Okamura | 6-3, 6-2 | | detalj meča | M15 Sharm | tvrda |
| 25.02.20 | kval. | Issei Okamura | Phuong Van Nguyen | 6-3, 4-6, 10-6 | | detalj meča | ||
| 24.02.20 | 2. kolo kval. | Issei Okamura | Ismael Changawa Ruwa Mzai | 6-3, 3-6, 10-5 | | detalj meča | ||
| 20.02.20 | 2. kolo | Jacopo Berrettini | Issei Okamura | 6-1, 6-2 | | detalj meča | M15 Sharm | tvrda |
| 19.02.20 | 1. kolo | Issei Okamura | Piotr Grynkowski | 6-3, 7-5 | | detalj meča | ||
| 26.01.20 | 1. kolo kval. | Palaphoom Kovapitukted | Issei Okamura | 6-4, 6-1 | | detalj meča |  M25 Nonthaburi | tvrda |
| 08.01.20 | 1. kolo | Adam El Mihdawy | Issei Okamura | 4-6, 6-2, 6-3 | | detalj meča |  M15 Hong | tvrda |
| 07.01.20 | kval. | Issei Okamura | Chayanon Kaewsuto | 6-0, 6-0 | | detalj meča | ||
| 06.01.20 | 1. kolo kval. | Issei Okamura | Douglas Geiwald | 6-2, 6-1 | | detalj meča |
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