Hayakawa, Toshiaki
Current rating: 1461
Record: 6-8
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 190 | Isomoto, Hirofumi (1496) | Lost 0-2 | -181500 |
| 2standard | 297 | Muranaka, Nobutoshi (1431) | Won 2-1 | +171517 |
| 3standard | 196 | Shimada, Masahiko (1500) | Lost 0-2 | -191498 |
| 4standard | 359 | Tsukagoshi, Tadaki (1405) | Lost 1-2 | -191479 |
| 5standard | 338 | Tatsumi, Yasukazu (1511) | Lost 1-2 | -181461 |
| average opponent: 1468record: 1-4 | new rating: 1461 | |||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 272 | Suzuki, Gou (1427) | Won 2-0 | +171517 |
| 2standard | 72 | Igeta, Hirofumi (1558) | Lost 0-2 | -181499 |
| 3standard | 232 | Noguchi, Keita (1468) | Won 2-1 | +181517 |
| 4standard | 247 | Nakai, Fuyuki (1521) | Lost 1-2 | -181499 |
| 5standard | 331 | Yaoita, Akihiro (1601) | Lost 0-2 | -161483 |
| 6standard | 322 | Oikawa, Mutsuki (1499) | Won 2-1 | +181501 |
| 7standard | 218 | Ohtsu, Minami (1470) | Won 2-0 | +181519 |
| 8standard | 166 | Yamazaki, Ginjiro (1515) | Won 2-0 | +171536 |
| 9standard | 149 | Ito, Masahiro (1537) | Lost 0-2 | -181518 |
| average opponent: 1511record: 5-4 | new rating: 1518 | |||