Ookubo, Jyunpei
Current rating: 1495
Record: 15-15-1
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 287 | Iida, Takuma (1500) | Won 2-0 | +191494 |
| 2legacy | 336 | Hayashi, Takatomo (1701) | Lost 0-2 | -141480 |
| 3legacy | 528 | Goto, Yoshimasa (1451) | Won 2-1 | +171497 |
| 4legacy | 308 | Yip, Glenn (1455) | Draw 1-1 | -11496 |
| 5legacy | 304 | Coad, Jay (1371) | Won 2-0 | +161512 |
| 6legacy | 181 | Sue, Ryoichi (1578) | Lost 1-2 | -171495 |
| top | average opponent: 1509record: 3-2-1 | new rating: 1495 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 205 | Suzuki, Kousei (1462) | Lost 1-2 | -201514 |
| 2legacy | 830 | Isono, Toru (1478) | Lost 0-2 | -181496 |
| 3legacy | 1122 | Fukuda, Tatsuya (1546) | Lost 0-2 | -181478 |
| 4legacy | 1154 | Kai, Hidekazu (1659) | Lost 1-2 | -141464 |
| 5legacy | 1133 | Mukai, Yukiaki (1431) | Won 2-0 | +171481 |
| 6legacy | 1060 | Kakegawa, Yu (1443) | Lost 1-2 | -191462 |
| 7legacy | 983 | Takeyama, Maya (1425) | Won 2-1 | +181480 |
| 8legacy | 853 | Karasawa, Kouichi (1364) | Lost 1-2 | -201460 |
| 9legacy | 761 | Matsuya, Takahiro (1333) | Won 2-1 | +151475 |
| top | average opponent: 1460record: 3-6 | new rating: 1475 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Nagato, Yusuke (1517) | Lost 0-2 | -181522 |
| 2standard | 1071 | Inaba, Kouhei (1481) | Lost 1-2 | -191503 |
| 3standard | 1612 | Nishimura, Hitoshi (1428) | Won 2-0 | +171520 |
| 4standard | 1243 | Imamura, Daisuke (1315) | Won 2-1 | +141534 |
| 5standard | 937 | Shimizu, Motohiro (1436) | Won 2-0 | +161550 |
| 6standard | 625 | Nakano, Yusuke (1481) | Won 2-1 | +171567 |
| 7standard | 481 | Oomori, Shouhei (1478) | Lost 1-2 | -201547 |
| 8standard | 757 | Oosaka, Yuusuke (1779) | Lost 1-2 | -131534 |
| top | average opponent: 1489record: 4-4 | new rating: 1534 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Matumura, Akihiro (1518) | Won 2-0 | +181518 |
| 2sealed | 201 | Fujima, Koichi (1517) | Lost 0-2 | -181500 |
| 3sealed | 472 | Saito, Shunsuke (1519) | Won 2-0 | +191519 |
| 4sealed | 205 | Nakai, Sunao (1726) | Won 2-1 | +211540 |
| 5sealed | 142 | Ichikawa, Norikazu (1601) | Lost 0-2 | -171523 |
| 6sealed | 279 | Yoshimoto, Takashi (1412) | Won 2-0 | +161539 |
| 7sealed | 238 | Tanaka, Ryuusuke (1535) | Won 2-0 | +181557 |
| 8sealed | 88 | Yamada, Yasushi (1605) | Lost 0-2 | -171540 |
| top | average opponent: 1554record: 5-3 | new rating: 1540 | ||