Iwamoto, Yasuharu
Current rating: 1467
Record: 4-6
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 459 | Sakata, Akinori (1243) | Won 2-0 | +151460 |
| 2sealed | 159 | Kurashita, Shinji (1483) | Won 2-0 | +181478 |
| 3sealed | 3 | Seki, Takahiro (1533) | Won 2-0 | +191497 |
| 4sealed | 22 | Satou, Tetsu (1558) | Won 2-1 | +191516 |
| 5sealed | 3 | Tsumura, Kenji (1653) | Lost 0-2 | -151501 |
| 6sealed | 133 | Matsumura, Taku (1674) | Lost 1-2 | -151486 |
| 7sealed | 216 | Kawasaki, Masatsugu (1454) | Lost 1-2 | -191467 |
| average opponent: 1514record: 4-3 | new rating: 1467 | |||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 293 | Kozuka, Takashi (1500) | Lost 0-2 | -181482 |
| 2modern | 496 | Watanabe, Yuta (1482) | Lost 1-2 | -181464 |
| 3modern | 512 | Asada, Hiroki (1428) | Lost 1-2 | -191445 |
| average opponent: 1470record: 0-3 | new rating: 1445 | |||