Sada, Kazutaka
Current rating: 1421
Record: 9-16
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1407 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 81 | Kamizono, Naoki (1527) | Lost 1-2 | -161391 |
| 2standard | 187 | Yoshimura, Yutaka (1434) | Won 2-0 | +191410 |
| 3standard | 243 | Ikeda, Naoto (1321) | Lost 1-2 | -201390 |
| 4standard | 342 | Ishihara, Takashi (1709) | Won 2-0 | +241414 |
| 5standard | 280 | Kobayashi, Satoshi (1476) | Won 2-0 | +191433 |
| 6standard | 184 | Ishii, Taisuke (1789) | Lost 0-2 | -121421 |
| top | average opponent: 1543record: 3-3 | new rating: 1421 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1382 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 267 | Saitou, Ryouta (1489) | Won 2-1 | +201402 |
| 2standard | 201 | Nakamura, Masanobu (1450) | Won 2-0 | +191421 |
| 3standard | 93 | Mochizuki, Yuusuke (1535) | Lost 0-2 | -161405 |
| 4standard | 199 | Seki, Fujio (1539) | Won 2-1 | +201425 |
| 5standard | 93 | Satou, Akihiko (1592) | Lost 0-2 | -151410 |
| 6standard | 144 | Nagami, Youichi (1468) | Won 2-1 | +191429 |
| 7standard | 144 | Sunada, Shougo (1783) | Lost 1-2 | -121417 |
| 8standard | 166 | Ishii, Taisuke (1854) | Lost 0-2 | -101407 |
| top | average opponent: 1589record: 4-4 | new rating: 1407 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 194 | Satou, Kenji (1623) | Lost 0-2 | -141396 |
| 2standard | 353 | Sugimoto, Takayuki (1421) | Won 2-0 | +191415 |
| 3standard | 191 | Muroda, Yuuki (1499) | Lost 0-2 | -171398 |
| 4standard | 291 | Oosaka, Yuusuke (1484) | Lost 1-2 | -161382 |
| top | average opponent: 1507record: 1-3 | new rating: 1382 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 36 | Seki, Kazuhiko (1568) | Won 2-0 | +191519 |
| 2standard | 61 | Kariya, Shoutarou (1518) | Lost 0-2 | -181501 |
| 3standard | 177 | Kubouchi, Naoki (1646) | Lost 0-2 | -151486 |
| 4standard | 340 | Tashiro, Hayato (1517) | Lost 1-2 | -181468 |
| 5standard | 317 | Watanabe, Taketoshi (1380) | Lost 0-2 | -191449 |
| 6standard | 296 | Yamasaki, Sadaharu (1341) | Lost 1-2 | -201429 |
| 7standard | 251 | Mochizuki, Kazuhiro (1410) | Lost 0-2 | -191410 |
| top | average opponent: 1483record: 1-6 | new rating: 1410 | ||