Toyama, Keiichi
Current rating: 1503
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Miyaguni, Musashi (1654) | Lost 0-2 | -171537 |
| 2sealed | 565 | Okamoto, Jin (1667) | Lost 1-2 | -151522 |
| 3sealed | 1012 | Levine, Joshua (1462) | Lost 0-2 | -191503 |
| top | average opponent: 1594record: 0-3 | new rating: 1503 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 558 | Yamamoto, Seigo (1358) | Won 2-0 | +151554 |
| 2modern | 183 | Yoshioka, Naoki (1518) | Won 2-1 | +181572 |
| 3modern | 180 | Tsujii, Shoichi (1450) | Won 2-0 | +151587 |
| 4modern | 66 | Nakamura, Yuki 8131 (1740) | Lost 1-2 | -151572 |
| 5modern | 226 | Takahashi, Jun (1797) | Lost 0-2 | -141558 |
| 6modern | 415 | Kayaki, Kazuya (1457) | Lost 0-2 | -201538 |
| 7modern | 580 | Yanagawa, Tomohiro (1390) | Won 2-0 | +161554 |
| top | average opponent: 1530record: 4-3 | new rating: 1554 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 510 | Sekine, Yoshinori (1447) | Lost 0-2 | -191481 |
| 2sealed | 627 | Hayakawa, Ryo (1472) | Won 2-1 | +181499 |
| 3sealed | 739 | Yamada, Mitsuhiro (1577) | Won 2-1 | +191518 |
| 4sealed | 474 | Yufu, Seizi (1518) | Won 2-1 | +181536 |
| 5sealed | 306 | Mishima, Wataru (1634) | Lost 0-2 | -161520 |
| 6sealed | 666 | Toyota, Kazuhisa (1501) | Won 2-0 | +181538 |
| 7sealed | 376 | Takahashi, Yuto (1644) | Won 2-1 | +201558 |
| 8sealed | 142 | Takahashi, Ryo 8120 (1548) | Lost 0-2 | -191539 |
| top | average opponent: 1543record: 5-3 | new rating: 1539 | ||