Osako, Tadasuke
Current rating: 1416
Record: 2-7-1
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 433 | Fukuda, Takashi (1484) | Draw 1-1 | +11447 |
| 2block | 359 | Fujita, Kazuki (1500) | Lost 0-1 | -171430 |
| 3block | 535 | Hamada, Shinichi (1482) | Won 1-0 | +191449 |
| 4block | 413 | Nishikawa, Takahito (1499) | Lost 0-2 | -171432 |
| 5block | 495 | Watanabe, Tomonari (1482) | Lost 0-2 | -171415 |
| 6block | 476 | Kawano, Mikio (1463) | Won 2-0 | +191434 |
| 7block | 359 | Tsunashima, Kotaro (1479) | Lost 0-2 | -181416 |
| average opponent: 1484record: 2-4-1 | new rating: 1416 | |||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Yamate, Akihiro (1500) | Lost 0-2 | -181482 |
| 2sealed | 148 | Takagi, Takeshi (1502) | Lost 1-2 | -181464 |
| 3sealed | 173 | Nagamori, Yukio (1464) | Lost 0-2 | -181446 |
| average opponent: 1489record: 0-3 | new rating: 1446 | |||