Ishikawa, Kazuyuki
Current rating: 1296
Record: 4-17
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1357 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 77 | Lagang, Manuel (1575) | Lost 1-2 | -141343 |
| 2standard | 536 | Sogo, Eiji (1476) | Lost 0-2 | -161327 |
| 3standard | 923 | Kamishiro, Issey (1478) | Lost 0-2 | -151312 |
| 4standard | 964 | Kitamura, Takuya (1434) | Lost 1-2 | -161296 |
| top | average opponent: 1491record: 0-4 | new rating: 1296 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1380 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 120 | Kato, Akinori (1493) | Won 2-0 | +201400 |
| 2standard | 104 | Yokoyama, Shouta (1475) | Lost 0-2 | -171383 |
| 3standard | 139 | Higashimura, Kazuya (1431) | Lost 1-2 | -171366 |
| 4standard | 334 | Maeda, Takashi (1484) | Won 2-1 | +201386 |
| 5standard | 228 | Kamiyama, Daiki (1496) | Lost 0-2 | -161370 |
| 6standard | 256 | Nagakita, Makoto (1411) | Won 2-1 | +191389 |
| 7standard | 209 | Yokoyama, Ryousuke (1497) | Lost 0-2 | -161373 |
| 8standard | 196 | Urashima, Takaharu (1483) | Lost 1-2 | -161357 |
| top | average opponent: 1471record: 3-5 | new rating: 1357 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Fujimoto, Taichi (1587) | Lost 0-2 | -151395 |
| 2sealed | 131 | Yano, Kunihiro (1545) | Lost 0-2 | -151380 |
| top | average opponent: 1566record: 0-2 | new rating: 1380 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 206 | Arai, Junko (1500) | Lost 1-2 | -181482 |
| 2extended | 194 | Nakanishi, Kazuo (1482) | Won 2-0 | +181500 |
| 3extended | 253 | Matsuyama, Makoto (1500) | Lost 1-2 | -181482 |
| 4extended | 306 | Moriwaki, Masayoshi (1482) | Lost 1-2 | -181464 |
| 5extended | 283 | Kataoka, Takeshi (1464) | Lost 0-2 | -181446 |
| 6extended | 260 | Suzuki, Yoshinao (1447) | Lost 1-2 | -181428 |
| 7extended | 233 | Matsuo, Yoshinori (1429) | Lost 0-2 | -181410 |
| top | average opponent: 1472record: 1-6 | new rating: 1410 | ||