Ishizuka, Hiroichi
Current rating: 1535
Record: 5-3-1
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 151 | Deyama, Hirofumi (1468) | Lost 0-2 | -191481 |
| 2block | 579 | Katayama, Tomoyuki (1480) | Lost 0-2 | -181463 |
| 3block | 588 | Yoshioka, Kouji (1464) | Lost 0-2 | -181445 |
| 4block | 603 | Mizuma, Shinobu (1447) | Won 2-0 | +181463 |
| 5block | 504 | Otsubo, Junichi (1463) | Won 2-0 | +181481 |
| 6block | 441 | Gotou, Hiroaki (1482) | Draw 1-1 | 01481 |
| 7block | 355 | Matsuda, Yoshiki (1481) | Won 2-0 | +181499 |
| 8block | 265 | Kawashima, Kazuya (1500) | Won 2-1 | +181517 |
| 9block | 178 | Iezaki, Dai (1518) | Won 2-0 | +181535 |
| average opponent: 1478record: 5-3-1 | new rating: 1535 | |||