Osako, Kazuki
Current rating: 1363
Record: 9-18
| Grand Prix Kobe 2014 (modern) | starting rating: 1368 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1008 | Kurata, Takayuki (1449) | Lost 0-2 | -171351 |
| 2modern | 1168 | Matsuzaki, Eiji (1489) | Won 2-1 | +211372 |
| 3modern | 1048 | Morishita, Yoshihisa (1498) | Lost 0-2 | -161356 |
| 4modern | 1167 | Shigemune, Akinori (1466) | Won 2-0 | +201376 |
| 5modern | 1029 | Date, Hiroshi (1645) | Lost 1-2 | -131363 |
| top | average opponent: 1509record: 2-3 | new rating: 1363 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1419 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 476 | Sasayama, Shin (1500) | Lost 1-2 | -161403 |
| 2standard | 492 | Ushima, Kousuke (1382) | Lost 1-2 | -191384 |
| 3standard | 679 | Umemoto, Ryouta (1464) | Lost 0-2 | -161368 |
| top | average opponent: 1449record: 0-3 | new rating: 1368 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 137 | Ooi, Masaki (1518) | Won 2-0 | +181487 |
| 3modern | 24 | Ohno, Isao (1620) | Lost 1-2 | -151472 |
| 4modern | 194 | Yokomori, Kantarou (1542) | Lost 1-2 | -171455 |
| 5modern | 515 | Higuchi, Kazuya (1449) | Lost 1-2 | -181437 |
| 6modern | 544 | Kitabayashi, Nobuyuki (1444) | Lost 0-2 | -181419 |
| top | average opponent: 1514record: 1-4 | new rating: 1419 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Watanabe, Satoshi (1500) | Lost 1-2 | -181446 |
| 2sealed | 366 | Sakai, Toshio (1480) | Won 2-1 | +191465 |
| 3sealed | 395 | Matsuo, Yoshiyuki (1589) | Won 2-1 | +201485 |
| 4sealed | 243 | Iwakane, Yuya (1564) | Lost 1-2 | -161469 |
| top | average opponent: 1533record: 2-2 | new rating: 1469 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 40 | Nakagawa, Takuma (1467) | Lost 0-2 | -181443 |
| 2standard | 315 | Yamauchi, Takashi (1540) | Lost 1-2 | -161427 |
| 3standard | 295 | Saitou, Eiji (1549) | Won 2-0 | +201447 |
| 4standard | 323 | Shibafuji, Shunsuke (1463) | Lost 0-2 | -171430 |
| 5standard | 325 | Yamashita, Kohji (1360) | Won 2-1 | +161446 |
| 6standard | 265 | Satou, Kenichi (1400) | Won 2-1 | +181464 |
| top | average opponent: 1463record: 3-3 | new rating: 1464 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 38 | Yamazaki, Satoshi (1486) | Lost 1-2 | -181482 |
| 2extended | 381 | Kobayashi, Shigehisa (1343) | Won 2-0 | +151497 |
| 3extended | 285 | Bang, Hyun-Jung (1500) | Lost 0-2 | -181479 |
| 4extended | 396 | Kawamoto, Masamitsu (1481) | Lost 0-2 | -181461 |
| top | average opponent: 1453record: 1-3 | new rating: 1461 | ||