Kousaka, Hitoshi
Current rating: 1363
| Grand Prix Chiba 2016 (legacy) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 713 | Oyama, Takumi (1472) | Lost 0-2 | -171395 |
| 2legacy | 584 | Hubbard, Gerad (1481) | Lost 1-2 | -161379 |
| 3legacy | 1066 | Seiwada, Koyo (1464) | Lost 0-2 | -161363 |
| top | average opponent: 1472record: 0-3 | new rating: 1363 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 21 | Date, Norikuni (1524) | Lost 0-2 | -171428 |
| 2standard | 365 | Miura, Seitarou (1515) | Won 2-0 | +201448 |
| 3standard | 289 | Yamazaki, Daisuke (1494) | Lost 0-2 | -181430 |
| 4standard | 382 | Takahashi, Tsutomu (1428) | Lost 1-2 | -181412 |
| top | average opponent: 1490record: 1-3 | new rating: 1412 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Hishida, Akinori (1501) | Lost 1-2 | -181482 |
| 2sealed | 201 | Asakawa, Takahiro (1401) | Lost 1-2 | -191463 |
| 3sealed | 294 | Igarashi, Jun (1460) | Draw 1-1 | -11462 |
| 4sealed | 298 | Nagai, Masaya (1464) | Lost 0-2 | -171445 |
| top | average opponent: 1456record: 0-3-1 | new rating: 1445 | ||