Matsui, Kouhei
Current rating: 1462
Record: 6-8
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 447 | Numata, Kou (1481) | Won 2-1 | +181479 |
| 2sealed | 215 | Satou, Naota (1512) | Lost 1-2 | -171462 |
| 3sealed | 717 | Shibata, Shusaku (1496) | Lost 1-2 | -181444 |
| 4sealed | 985 | Anzai, Sachio (1294) | Lost 0-2 | -201424 |
| 5sealed | 932 | Sano, Masayo (1471) | Won 2-0 | +191443 |
| 6sealed | 817 | Sasaki, Shin (1510) | Won 2-0 | +191462 |
| 7sealed | 578 | Sasaki, Osamu (1504) | Won 2-1 | +191481 |
| 8sealed | 487 | Gao, Bo (1445) | Lost 0-2 | -191462 |
| average opponent: 1464record: 4-4 | new rating: 1462 | |||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Ojima, Toshiaki (1500) | Won 2-1 | +181518 |
| 2sealed | 273 | Inuzuka, Satoshi (1580) | Lost 0-2 | -171501 |
| 3sealed | 789 | Takaki, Kazunari (1505) | Lost 1-2 | -181483 |
| 4sealed | 926 | Aoi, Masashi (1359) | Lost 1-2 | -201463 |
| 5sealed | 1020 | Nagase, Hirofumi (1360) | Won 2-0 | +161479 |
| 6sealed | 896 | Oda, Ryutaro (1468) | Lost 0-2 | -181461 |
| average opponent: 1462record: 2-4 | new rating: 1461 | |||