Kosaka, Yoko
Current rating: 1461
Record: 2-4-2
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Kubota, Toru (1500) | Lost 0-2 | -181482 |
| 2sealed | 281 | Muramatsu, Daisuke (1483) | Lost 0-2 | -181464 |
| 3sealed | 313 | Takeda, Mayumi (1394) | Won 2-0 | +171481 |
| 4sealed | 218 | Ueno, Shinichi (1501) | Lost 0-2 | -181463 |
| 5sealed | 261 | Takahara, Hitoki (1464) | Won 1-0 | +181481 |
| 6sealed | 209 | Taniguchi, Atsushi (1363) | Draw 1-1 | -21479 |
| 7sealed | 164 | Umino, Takao (1483) | Draw 1-1 | 01479 |
| 8sealed | 137 | Yamasaki, Takao (1466) | Lost 1-2 | -181461 |
| average opponent: 1457record: 2-4-2 | new rating: 1461 | |||