Kamata, Toshihiko
Current rating: 1471
Record: 17-19
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Tee, Eric (1426) | Lost 0-2 | -191471 |
| top | record: 0-1 | new rating: 1471 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 714 | Murahata, Hiroyuki (1500) | Lost 0-2 | -191511 |
| 2standard | 817 | Tanabe, Kohei (1503) | Lost 0-2 | -181493 |
| 3standard | 1466 | Mukai, Shinichi (1354) | Won 2-1 | +151508 |
| 4standard | 1313 | Haruma, Sudo (1482) | Lost 0-2 | -181490 |
| top | average opponent: 1460record: 1-3 | new rating: 1490 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 363 | Fujiwara, Ryuki (1565) | Won 2-1 | +181550 |
| 2sealed | 366 | Hoshino, Shinya (1377) | Lost 0-2 | -211529 |
| 3sealed | 1028 | Ogawa, Yoei (1498) | Won 2-1 | +181547 |
| 4sealed | 512 | Itakura, Toshiyuki (1626) | Lost 0-2 | -171530 |
| 5sealed | 837 | Itou, Akira4141 (1499) | Won 2-0 | +171547 |
| 6sealed | 744 | Ando, Akira (1559) | Lost 1-2 | -171530 |
| top | average opponent: 1521record: 3-3 | new rating: 1530 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 144 | Iwata, Ayumu (1500) | Won 2-1 | +181493 |
| 2standard | 357 | Yamaguchi, Kyohei (1472) | Won 2-0 | +181511 |
| 3standard | 100 | Tanaka, Shinichi (1568) | Lost 1-2 | -171494 |
| 4standard | 727 | Hiraoka, Shigenori (1534) | Won 2-0 | +191513 |
| 5standard | 476 | Sano, Takumi (1493) | Won 2-0 | +171530 |
| 6standard | 300 | Ushiro, Yukinobu (1450) | Lost 1-2 | -191511 |
| 7standard | 340 | Sashida, Tomoro (1419) | Won 2-0 | +161527 |
| 8standard | 322 | Hasegawa, Gaku (1743) | Won 2-0 | +221549 |
| 9standard | 83 | Mikami, Yoshirou (1582) | Lost 1-2 | -171532 |
| top | average opponent: 1529record: 6-3 | new rating: 1532 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 434 | Kanazawa, Shuu (1568) | Lost 0-2 | -161469 |
| 2sealed | 474 | Matsumoto, Kei (1481) | Won 2-1 | +181487 |
| 3sealed | 282 | Usui, Yuuka (1500) | Won 2-0 | +181505 |
| 4sealed | 268 | Matsushita, Takayuki (1582) | Lost 1-2 | -161489 |
| 5sealed | 318 | Murae, Ryuji (1720) | Lost 0-2 | -141475 |
| top | average opponent: 1570record: 2-3 | new rating: 1475 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 282 | Hirano, Mikita (1520) | Won 2-1 | +181519 |
| 2sealed | 98 | Masuno, Ryosuke (1696) | Lost 1-2 | -151504 |
| 3sealed | 264 | Yamamoto, Tsuyoshi (1501) | Lost 1-2 | -181486 |
| 4sealed | 467 | Takahashi, Masato (1446) | Lost 0-2 | -181468 |
| 5sealed | 423 | Nakamura, Makoto (1460) | Won 2-0 | +171485 |
| top | average opponent: 1525record: 2-3 | new rating: 1485 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 166 | Shinozaki, Yuu (1581) | Lost 1-2 | -171483 |
| 2standard | 256 | Kezuka, Takurou (1481) | Lost 1-2 | -181465 |
| 3standard | 404 | Matsuzaki, Akihiro (1463) | Won 2-0 | +181483 |
| 4standard | 351 | Kadowaki, Kouhei (1480) | Lost 0-2 | -181465 |
| 5standard | 345 | Tsutai, Koutarou (1436) | Won 2-0 | +181483 |
| 6standard | 272 | Aoki, Satoshi (1482) | Won 2-1 | +181501 |
| top | average opponent: 1487record: 3-3 | new rating: 1501 | ||