Iwata, Takahiro
Current rating: 1474
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 590 | Ebitani, Keisuke (1580) | Lost 0-2 | -171513 |
| 3sealed | 824 | Nuruki, Hiroaki (1665) | Won 2-0 | +201533 |
| 4sealed | 770 | Shibata, Daisuke (1501) | Lost 0-2 | -181515 |
| 5sealed | 715 | Miyawaki, Takayuki (1483) | Lost 1-2 | -191496 |
| 6sealed | 791 | Irie, Shun (1433) | Lost 0-2 | -191477 |
| 7sealed | 756 | Yoshimura, Motoki (1240) | Won 2-0 | +141491 |
| 8sealed | 697 | Nogami, Kazuki (1539) | Lost 1-2 | -171474 |
| top | average opponent: 1491record: 2-5 | new rating: 1474 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Ichinohe, Hirona (1569) | Won 2-0 | +191535 |
| 2standard | 131 | Ito, Hajime (1480) | Lost 1-2 | -191516 |
| 3standard | 350 | Yamazaki, Jun (1487) | Lost 0-2 | -191497 |
| 4standard | 290 | Ueda, Yushi (1400) | Won 2-0 | +171514 |
| 5standard | 283 | Nishiki, Kentarou (1564) | Won 2-0 | +191533 |
| 6standard | 209 | Takamizawa, Shigeyoshi (1396) | Won 2-1 | +151548 |
| 7standard | 179 | Seta, Ryouhei (1526) | Won 2-0 | +181566 |
| 8standard | 120 | Kageyama, Hiroki (1575) | Lost 0-2 | -181548 |
| 9standard | 249 | Kinugasa, Satoshi (1532) | Lost 1-2 | -181530 |
| top | average opponent: 1503record: 5-4 | new rating: 1530 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 478 | Miyawaki, Takahiro (1532) | Won 2-1 | +191519 |
| 2standard | 314 | Sakai, Takashi (1520) | Lost 1-2 | -181501 |
| 3standard | 347 | Sunaga, Ayumu (1385) | Won 2-0 | +161517 |
| 4standard | 387 | Fujimori, Masayoshi (1552) | Won 2-0 | +181535 |
| 5standard | 266 | Yoshida, Takefumi (1540) | Lost 0-2 | -181517 |
| 6standard | 390 | Miyake, Kyohei (1452) | Won 2-0 | +171534 |
| 7standard | 173 | Akita, Naoto (1533) | Lost 0-2 | -181516 |
| top | average opponent: 1502record: 4-3 | new rating: 1516 | ||