Kou K.,
Current rating: 1451
Record: 1-4
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 159 | Fujimori, Masayoshi (1505) | Lost 1-2 | -181482 |
| 3standard | 189 | Yoshida, Hiroshi (1703) | Won 2-0 | +221504 |
| 4standard | 135 | Endo, Jun'Ichi (1535) | Lost 0-2 | -171487 |
| 5standard | 199 | Wu, Jun-Shain (1478) | Lost 1-2 | -191468 |
| 6standard | 262 | Harino, Kengo (1482) | Lost 0-2 | -171451 |
| average opponent: 1541record: 1-4 | new rating: 1451 | |||