Okumura, Takaaki
Current rating: 1551
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 342 | Seike, Makoto (1586) | Won 2-1 | +201506 |
| 2pioneer | 340 | Yamauchi, Takashi (1383) | Won 2-1 | +151521 |
| 3pioneer | 207 | Tsutai, Koutarou (1400) | Won 2-1 | +161537 |
| 4pioneer | 21 | Sakata, Naoya (1605) | Lost 0-2 | -171520 |
| 5pioneer | 325 | Mizutani, Naoto (1707) | Won 2-0 | +221542 |
| 6pioneer | 226 | Tokitsu, Hiroshi (1575) | Won 2-0 | +181560 |
| 7pioneer | 91 | Hori, Masayuki (1466) | Won 2-0 | +171577 |
| 8pioneer | 18 | Fukumoto, Hiroaki (1610) | Won 2-1 | +181595 |
| 9pioneer | 39 | Matsubara, Ichiro (1659) | Lost 0-2 | -161579 |
| 10pioneer | 84 | Nakao, Motohiko (1824) | Lost 1-2 | -141565 |
| 11pioneer | 101 | Wang, Kunrui (1656) | Lost 1-2 | -161549 |
| 12pioneer | 113 | Matsumura, Asuka (1542) | Won 2-1 | +171566 |
| 13pioneer | 99 | Arakawa, Tomohiro (1568) | Lost 1-2 | -181548 |
| 14pioneer | 113 | Arai, Makoto (1534) | Won 2-1 | +181566 |
| 15pioneer | 94 | Taniguchi, Hiroaki (1739) | Lost 0-2 | -151551 |
| top | average opponent: 1590record: 9-6 | new rating: 1551 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 329 | Jinba, Nobuaki (1445) | Won 2-0 | +181499 |
| 2standard | 103 | Niikawa, Shouhei (1478) | Lost 1-2 | -191480 |
| 3standard | 599 | Wachi, Shinya (1663) | Won 2-0 | +221502 |
| 4standard | 525 | Higashimori, Kazunori (1572) | Won 2-1 | +191521 |
| 5standard | 212 | Kawamura, Rikiya (1492) | Lost 0-2 | -191502 |
| 6standard | 299 | Shibata, Akira (1580) | Lost 1-2 | -161486 |
| top | average opponent: 1538record: 3-3 | new rating: 1486 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 222 | Irie, Masafumi (1387) | Lost 1-2 | -201480 |
| 2sealed | 739 | Shimadu, Naofumi (1534) | Won 2-1 | +191499 |
| 3sealed | 533 | Sayama, Tomonori (1369) | Won 2-0 | +161515 |
| 4sealed | 416 | Nakajima, Yuusuke (1573) | Lost 0-2 | -171498 |
| 5sealed | 609 | Seno, Takuto (1597) | Lost 0-2 | -171481 |
| top | average opponent: 1492record: 2-3 | new rating: 1481 | ||