Iwasaki, Shin
Current rating: 1498
Record: 7-7
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1 | Takamasa, Hirano (1500) | Lost 1-2 | -191519 |
| 2standard | 370 | Nagamoto, Kouji (1494) | Lost 1-2 | -181501 |
| 3standard | 487 | Yuma, Shimizu (1469) | Won 2-0 | +171518 |
| 4standard | 457 | Yamada, Takaaki (1604) | Won 2-1 | +201538 |
| 5standard | 398 | Yoshidomi, Shuuji (1452) | Lost 0-2 | -201518 |
| 6standard | 431 | Yoshimura, Naoto (1395) | Lost 0-2 | -201498 |
| average opponent: 1486record: 2-4 | new rating: 1498 | |||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 287 | Sugishita, Akihiro (1500) | Won 0-0 | +181518 |
| 2sealed | 96 | Ryo, Tomohiro (1483) | Won 2-1 | +171535 |
| 3sealed | 62 | Okada, Kou (1673) | Won 2-0 | +211556 |
| 4sealed | 71 | Furukawa, Ken'ichi (1661) | Lost 0-2 | -161540 |
| 5sealed | 78 | Katsumoto, Tomomi (1403) | Won 2-1 | +151555 |
| 6sealed | 54 | Kashima, Akihiro (1718) | Lost 0-2 | -151540 |
| 7sealed | 91 | Kishimoto, Hiromichi (1490) | Won 2-1 | +171557 |
| 8sealed | 19 | Morisaki, Nobuki (1489) | Lost 0-2 | -191538 |
| average opponent: 1552record: 5-3 | new rating: 1538 | |||