Iwao, Takashi
Current rating: 1489
| Grand Prix Yokohama 2012 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 278 | Yamashita, Kouhei (1524) | Lost 0-2 | -171466 |
| 2modern | 440 | Nakamura, Yuuki (1633) | Won 2-1 | +211487 |
| 3modern | 473 | Katou, Yoshitaka (1499) | Won 2-0 | +181505 |
| 4modern | 338 | Toda, Hirotsugu (1602) | Lost 1-2 | -161489 |
| top | average opponent: 1564record: 2-2 | new rating: 1489 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 422 | Yokozawa, Naoya (1484) | Lost 0-2 | -181465 |
| 2extended | 329 | Okada, Naoya (1481) | Won 2-0 | +181483 |
| 3extended | 245 | Ikenuma, Yuuto (1456) | Won 2-1 | +181501 |
| 4extended | 269 | Kaneko, Junpei (1518) | Draw 1-1 | 01501 |
| 5extended | 214 | Tsukahara, Taika (1518) | Won 2-0 | +181519 |
| 6extended | 136 | Kudo, Hiroshi (1468) | Won 2-0 | +171536 |
| 7extended | 89 | Yokota, Kohei (1556) | Lost 0-1 | -171519 |
| 8extended | 198 | Kanekiyo, Ryusuke (1556) | Lost 0-2 | -181501 |
| 9extended | 128 | Nitta, Yuki (1501) | Lost 0-2 | -181483 |
| top | average opponent: 1504record: 4-4-1 | new rating: 1483 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 61 | Nakamoto, Hiroyuki (1500) | Lost 0-2 | -181482 |
| 2block | 562 | Terauchi, Masanori (1482) | Won 2-0 | +181500 |
| 3block | 516 | Honjo, Kotaro (1482) | Won 2-0 | +181518 |
| 4block | 306 | Ikematsu, Tsuyoshi (1572) | Lost 0-2 | -171501 |
| 5block | 347 | Ozaki, Youichirou (1500) | Lost 0-2 | -181483 |
| top | average opponent: 1507record: 2-3 | new rating: 1483 | ||