Sakamoto, Ryouhei
Current rating: 1473
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 27 | Kishi, Hideyuki (1537) | Won 2-0 | +201450 |
| 4standard | 154 | Fukazawa, Yuuki (1565) | Lost 1-2 | -161434 |
| 5standard | 200 | Tazawa, Kazuhide (1515) | Won 2-0 | +201454 |
| 6standard | 45 | Shota, Tagami (1558) | Won 2-1 | +201474 |
| 7standard | 93 | Ono, Tomonori (1501) | Won 2-1 | +181492 |
| 8standard | 57 | Sekiguchi, Dan (1518) | Won 2-1 | +191511 |
| 9standard | 32 | Oonishi, Tatsuya (1508) | Won 2-0 | +181529 |
| 10standard | 11 | Sim, Chapman (1825) | Won 2-0 | +231552 |
| 11standard | 10 | Urasawa, Taiji (1594) | Lost 1-2 | -171535 |
| 12standard | 23 | Matsumoto, Yuki2978 (1930) | Lost 1-2 | -121523 |
| 13standard | 27 | Nakazono, Kouya (1623) | Lost 0-2 | -161507 |
| 14standard | 53 | Endo, Takatomo (1518) | Lost 1-2 | -181489 |
| 15standard | 51 | Oonishi, Takahisa (1549) | Lost 1-2 | -161473 |
| top | average opponent: 1595record: 7-6 | new rating: 1473 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 296 | Oota, Yoshiyuki (1521) | Lost 1-2 | -171448 |
| 2sealed | 362 | Iwamura, Ryouichi (1483) | Lost 1-2 | -171431 |
| 3sealed | 436 | Ishimura, Kenji (1398) | Won 2-1 | +171448 |
| 4sealed | 418 | Ishiba, Hiroshi (1465) | Lost 0-2 | -181430 |
| top | average opponent: 1467record: 1-3 | new rating: 1430 | ||
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Iwahashi, Kouki (1500) | Lost 1-2 | -181482 |
| 2sealed | 145 | Iki, Youichi (1471) | Lost 1-2 | -181464 |
| 3sealed | 182 | Tanaka, Kazuhiko (1451) | Won 2-0 | +181482 |
| 4sealed | 196 | Ashikaga, Masatoshi (1554) | Lost 0-2 | -171465 |
| top | average opponent: 1494record: 1-3 | new rating: 1465 | ||