Mayumi, Ryuuta
Current rating: 1562
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 274 | Webster, Harry (1519) | Won 2-1 | +171602 |
| 2sealed | 166 | Inoue, Shinta (1606) | Lost 0-2 | -181584 |
| 3sealed | 249 | Sekino, Takashi (1381) | Lost 1-2 | -221562 |
| top | average opponent: 1502record: 1-2 | new rating: 1562 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 25 | Masuda, Hitoshi (1500) | Won 2-0 | +171590 |
| 2standard | 185 | Ueno, Takamasa (1559) | Lost 0-2 | -191571 |
| 3standard | 266 | Nakane, Yoshiji (1482) | Lost 1-2 | -201551 |
| 4standard | 321 | Hiraga, Mikio (1494) | Won 2-0 | +171568 |
| 5standard | 278 | Kodama, Aritsune (1483) | Won 2-1 | +171585 |
| 6standard | 206 | Yamamoto, Takao (1504) | Won 2-1 | +161601 |
| 7standard | 158 | Taniguchi, Tomoya (1700) | Lost 0-2 | -161585 |
| top | average opponent: 1532record: 4-3 | new rating: 1585 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Sato, Taichi (1500) | Won 2-0 | +181518 |
| 2sealed | 29 | Maeno, Ryuju (1569) | Won 2-1 | +191537 |
| 3sealed | 48 | Ishibashi, Masashi (1435) | Won 2-1 | +161553 |
| 4sealed | 27 | Nagao, Hakaru (1447) | Lost 0-2 | -201533 |
| 5sealed | 110 | Kiyota, Ken (1628) | Won 2-1 | +201553 |
| 6sealed | 48 | Jung, Ga Ram (1561) | Lost 0-2 | -181535 |
| 7sealed | 63 | Iwamoto, Hiroaki (1534) | Won 2-1 | +181553 |
| 8sealed | 41 | Shibuya, Yuuto (1659) | Won 2-0 | +201573 |
| top | average opponent: 1542record: 6-2 | new rating: 1573 | ||