Iwamoto, Tatsuki
Current rating: 1610
Record: 28-19-1
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1653 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 285 | Sakaida, Yuuki (1445) | Lost 1-2 | -221631 |
| 2standard | 672 | Matsui, Hiroki (1474) | Lost 0-2 | -211610 |
| top | average opponent: 1460record: 0-2 | new rating: 1610 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1648 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 802 | Ogura, Takamasa5329 (1377) | Won 2-0 | +141662 |
| 2sealed | 146 | Hayashi, Yuta (1455) | Lost 1-2 | -221640 |
| 3sealed | 998 | Hirao, Takanori (1498) | Lost 1-2 | -211619 |
| 4sealed | 1039 | Kimura, Takuya (1562) | Won 2-1 | +171636 |
| 5sealed | 910 | Kato, Masaaki (1499) | Won 2-1 | +161652 |
| 6sealed | 486 | Kasuga, Ryosuke (1837) | Won 2-0 | +211673 |
| 7sealed | 471 | Narisawa, Takuya (1546) | Lost 1-2 | -201653 |
| top | average opponent: 1539record: 4-3 | new rating: 1653 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1682 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 90 | Sugiyama, Kyoushirou (1427) | Won 2-1 | +131695 |
| 2legacy | 187 | Matsumura, Takehiko (1491) | Lost 0-2 | -211674 |
| 3legacy | 327 | Kurata, Takayuki (1467) | Lost 1-2 | -221652 |
| 4legacy | 374 | Date, Tsutomu (1677) | Won 2-0 | +181670 |
| 5legacy | 358 | Kamiya, Shougo (1453) | Lost 0-2 | -221648 |
| top | average opponent: 1503record: 2-3 | new rating: 1648 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1717 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 62 | Satou, Chika (1577) | Won 1-0 | +151732 |
| 2modern | 147 | Matsuida, Naoki (1518) | Lost 1-2 | -211711 |
| 3modern | 271 | Kurahashi, Takumi (1503) | Won 2-0 | +141725 |
| 4modern | 168 | Uchida, Kenta (1517) | Lost 0-2 | -221703 |
| 5modern | 426 | Nakamichi, Ichiro (1516) | Lost 0-2 | -211682 |
| top | average opponent: 1526record: 2-3 | new rating: 1682 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1664 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 543 | Mashima, Mitsuharu (1771) | Won 2-0 | +201684 |
| 3standard | 623 | Tanji, Kensuke (1463) | Lost 0-2 | -221662 |
| 4standard | 764 | Mitsuyasu, Hidetoshi (1618) | Won 2-0 | +171679 |
| 5standard | 635 | Kimura, Kosuke (1515) | Won 2-0 | +151694 |
| 6standard | 548 | Nakamura, Masato (1512) | Lost 0-2 | -211673 |
| 7standard | 663 | Itou, Taisei (1504) | Won 2-1 | +151688 |
| 8standard | 558 | Kaneko, Shinsaku (1500) | Won 2-0 | +151703 |
| 9standard | 658 | Tamada, Ryoichi (1783) | Won 2-0 | +191722 |
| 10standard | 60 | Komuro, Shuu (1948) | Won 2-0 | +221744 |
| 11standard | 62 | Ito, Hajime (1583) | Won 2-1 | +151759 |
| 12standard | 31 | Kim, So Hwan (1588) | Lost 0-2 | -211738 |
| 13standard | 62 | Kaizu, Hareta (1644) | Lost 0-2 | -191719 |
| 14standard | 59 | Nakamura, Yusuke (1702) | Won 2-1 | +171736 |
| 15standard | 57 | Tezuka, Yo (1668) | Lost 1-2 | -191717 |
| top | average opponent: 1629record: 9-5 | new rating: 1717 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 14 | Tamura, Ryo (1946) | Lost 1-2 | -101490 |
| 2standard | 321 | Tawara, Kazumasa (1482) | Won 2-0 | +171507 |
| 3standard | 311 | Shiota, Yuuma (1556) | Won 2-1 | +191526 |
| 4standard | 309 | Furugen, Takeji (1401) | Won 2-0 | +161542 |
| 5standard | 196 | Fujimoto, Katsuya (1571) | Won 2-1 | +191561 |
| 6standard | 94 | Kamizono, Naoki (1667) | Won 2-1 | +201581 |
| 7standard | 94 | Yamaguchi, Tomoyuki (1569) | Draw 1-1 | -11580 |
| 8standard | 69 | Fujii, Toshikazu (1522) | Won 2-1 | +171597 |
| 9standard | 39 | Kobayashi, Kazuto (1603) | Won 2-0 | +181615 |
| 10standard | 22 | Jung, Tae-Wook (1663) | Won 2-0 | +191634 |
| 11standard | 13 | Shimizu, Naoki (1843) | Won 2-0 | +221656 |
| 12standard | 8 | Nakamura, Shuhei (2026) | Won 2-1 | +241680 |
| 13standard | 5 | Itani, Hiroshi (1718) | Lost 1-2 | -171663 |
| 14standard | 13 | Okada, Yoshikazu (1600) | Lost 0-2 | -191644 |
| 15standard | 23 | Wee, Pang Ming (1770) | Won 2-1 | +201664 |
| top | average opponent: 1662record: 11-3-1 | new rating: 1664 | ||