Kouhata, Toshiya
Current rating: 1417
| Grand Prix Chiba 2016 (legacy) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 263 | Kamiyama, Yuji (1460) | Lost 1-2 | -181431 |
| 2legacy | 813 | Ogino, Hiroki (1425) | Won 2-1 | +181449 |
| 3legacy | 785 | Arimoto, Sousuke (1500) | Won 2-0 | +191468 |
| 4legacy | 334 | Ohkubo, Yuki (1508) | Lost 1-2 | -171451 |
| 5legacy | 833 | Yasuda, Takaaki (1497) | Lost 1-2 | -171434 |
| 6legacy | 846 | Kakimi, Yoshinori (1487) | Lost 0-2 | -171417 |
| top | average opponent: 1480record: 2-4 | new rating: 1417 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2255 | Matubayashi, Kazunori (1621) | Lost 1-2 | -161466 |
| 2sealed | 2272 | Hirano, Nanao (1471) | Won 2-0 | +181484 |
| 3sealed | 2410 | Yagi, Hiroyuki (1513) | Lost 1-2 | -171467 |
| 4sealed | 2405 | Ishino, Hiroki (1482) | Lost 0-2 | -181449 |
| top | average opponent: 1522record: 1-3 | new rating: 1449 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 42 | Ikegami, Akira (1515) | Won 2-1 | +181518 |
| 2legacy | 206 | Masatsugu, Tatsuya (1542) | Lost 0-2 | -171501 |
| 3legacy | 399 | Kobayashi, Takashi (1545) | Won 2-0 | +191520 |
| 4legacy | 249 | Yonezu, Kazutoyo (1516) | Lost 0-2 | -191501 |
| 5legacy | 223 | Shirakawa, Hiroaki (1471) | Won 2-0 | +181519 |
| 6legacy | 192 | Itazu, Yoshihisa (1412) | Lost 0-2 | -201499 |
| 7legacy | 256 | Yamamoto, Yuta (1541) | Lost 0-2 | -171482 |
| top | average opponent: 1506record: 3-4 | new rating: 1482 | ||