Ishikawa, Yoshitaka
Current rating: 1415
Record: 2-7
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 164 | Itou, Shougo (1707) | Lost 0-2 | -141464 |
| 3block | 238 | Tashiro, Yoshiaki (1629) | Lost 0-2 | -151449 |
| 4block | 257 | Umehara, Kei (1501) | Lost 0-2 | -171432 |
| 5block | 325 | Yoshida, Kouki (1488) | Lost 1-2 | -171415 |
| average opponent: 1581record: 0-4 | new rating: 1415 | |||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 182 | Abe, Ken'Ichi (1480) | Lost 1-2 | -181482 |
| 2standard | 271 | Tsuyuki, Kouichi (1463) | Won 2-1 | +171499 |
| 3standard | 147 | Izumiya, Yoshiaki (1484) | Lost 0-2 | -181481 |
| 4standard | 353 | Matsumoto, Yuki1423 (1409) | Won 2-0 | +171498 |
| 5standard | 211 | Ito, Yuuko (1416) | Lost 0-2 | -201478 |
| average opponent: 1451record: 2-3 | new rating: 1478 | |||