Sakamoto, Humiyuki
Current rating: 1422
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 538 | Nakao, Munenari (1578) | Lost 0-2 | -171456 |
| 2legacy | 745 | Eura, Hiroki (1501) | Won 2-0 | +191475 |
| 3legacy | 731 | Suzuki, Taito (1465) | Lost 0-2 | -181457 |
| 4legacy | 874 | Ryouzawa, Kouhei (1480) | Won 2-0 | +181475 |
| 5legacy | 766 | Yoshimura, Yutaka (1392) | Lost 1-2 | -191456 |
| 6legacy | 833 | Kumon, Shun (1556) | Lost 1-2 | -161440 |
| 7legacy | 800 | Koga, Takashi (1463) | Lost 0-2 | -181422 |
| 8legacy | 781 | Yamashita, Hiromichi (1448) | Lost 0-2 | -171405 |
| 9legacy | 744 | Yano, Keitarou (1376) | Won 2-1 | +171422 |
| top | average opponent: 1473record: 3-6 | new rating: 1422 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 684 | Usukura, Takumi (1565) | Lost 0-2 | -161429 |
| 2sealed | 840 | Kojima, Yuusuke (Gifu) (1482) | Lost 1-2 | -171412 |
| 3sealed | 893 | Fukihara, Shouta (1463) | Won 2-0 | +191431 |
| 4sealed | 844 | Inoue, Takuro (1482) | Won 2-0 | +191450 |
| 5sealed | 812 | Takashi, Ooto (1500) | Lost 1-2 | -171433 |
| 6sealed | 787 | Kawa, Hirokazu (1489) | Lost 0-2 | -171416 |
| 7sealed | 754 | Ikeda, Tomokazu (1401) | Won 2-0 | +181434 |
| 8sealed | 688 | Aoki, Hisashi (1479) | Won 2-1 | +191453 |
| 9sealed | 642 | Nogami, Kazuki (1556) | Won 2-0 | +201473 |
| top | average opponent: 1491record: 5-4 | new rating: 1473 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 231 | Arakawa, Tatsuya (1719) | Lost 0-2 | -141486 |
| 2sealed | 326 | Aida, Yasuki (1521) | Lost 0-2 | -171469 |
| 3sealed | 469 | Takeuchi, Hidehito (1164) | Lost 0-2 | -241445 |
| top | average opponent: 1468record: 0-3 | new rating: 1445 | ||