Ookawai, Yuu
Current rating: 1449
Record: 5-8
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 255 | Fukuda, Junpei (1427) | Won 2-0 | +181442 |
| 2sealed | 130 | Kosaka, Ryohei (1430) | Lost 1-2 | -181424 |
| 3sealed | 731 | Takeshita, Yuuto (1425) | Won 2-1 | +181442 |
| 4sealed | 333 | Taki, Yoshikazu (1548) | Lost 1-2 | -161426 |
| 5sealed | 743 | Takahashi, Ryo 4679 (1514) | Won 2-0 | +191445 |
| 6sealed | 568 | Sano, Masayo (1445) | Won 2-0 | +181463 |
| 7sealed | 240 | Kanno, Atsushi (1642) | Lost 0-2 | -141449 |
| average opponent: 1490record: 4-3 | new rating: 1449 | |||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 629 | Yamazaki, Motohiro (1675) | Lost 0-2 | -151485 |
| 2sealed | 607 | Tateyama, Masato (1330) | Won 2-1 | +151500 |
| 3sealed | 935 | Suzuki, Takehiro (1500) | Lost 0-2 | -181482 |
| 4sealed | 850 | Kitajima, Ryoko (1418) | Lost 0-2 | -191463 |
| 5sealed | 924 | Nishiguchi, Yoshinori (1300) | Lost 0-2 | -211442 |
| 6sealed | 868 | Otsubo, Yuma (1432) | Lost 1-2 | -181424 |
| average opponent: 1442record: 1-5 | new rating: 1424 | |||