Iwama, Kento
Current rating: 1433
| Grand Prix Kobe 2017 (modern) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 300 | Sakaguchi, Takuya (1457) | Lost 0-2 | -181433 |
| top | record: 0-1 | new rating: 1433 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 422 | Kambe, Kouichi (1500) | Lost 0-2 | -171449 |
| 2standard | 885 | Harada, Masato (1506) | Lost 1-2 | -171432 |
| 3standard | 1249 | Suga, Hiroki (1523) | Won 2-0 | +191451 |
| 4standard | 1118 | Ikeda, Ippei (1495) | Won 2-0 | +191470 |
| 5standard | 680 | Nagata, Satoshi (1423) | Won 2-0 | +171487 |
| 6standard | 467 | Miyaho, Kazuhiro (1519) | Lost 1-2 | -171470 |
| 7standard | 843 | Ninohira, Yuuya (1461) | Lost 1-2 | -181452 |
| 8standard | 897 | Maryu, Sotaro (1452) | Lost 0-2 | -181434 |
| 9standard | 763 | Takahashi, Muneaki (1374) | Won 2-1 | +171451 |
| top | average opponent: 1473record: 4-5 | new rating: 1451 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 218 | Okajima, Masahiro (1582) | Won 2-1 | +191519 |
| 2legacy | 223 | Ishiguro, Tetsuya (1462) | Lost 1-2 | -191500 |
| 3legacy | 629 | Koyanagi, Takuya (1614) | Won 2-0 | +211521 |
| 4legacy | 626 | Saito, Gaku (1517) | Lost 1-2 | -191502 |
| 5legacy | 784 | Date, Shogo (1494) | Lost 1-2 | -181484 |
| 6legacy | 856 | Ikegami, Madoka (1478) | Lost 0-2 | -181466 |
| top | average opponent: 1525record: 2-4 | new rating: 1466 | ||