Yamagata, Kouhei
Current rating: 1458
| Grand Prix Yokohama 2019 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 458 | Abe, Yuuta (1577) | Won 2-0 | +191515 |
| 2modern | 142 | Oda, Yuuki (1350) | Lost 1-2 | -211494 |
| 3modern | 1006 | Sim, Soohong (1496) | Lost 0-2 | -181476 |
| 4modern | 857 | Kondou, Ryuuki (1470) | Lost 0-2 | -181458 |
| top | average opponent: 1473record: 1-3 | new rating: 1458 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 202 | Kanemaru, Tomoki (1500) | Won 2-1 | +181513 |
| 2legacy | 148 | Muranaka, Hiroya (1612) | Won 2-0 | +201533 |
| 3legacy | 182 | Shirai, Shuto (1538) | Lost 0-2 | -181515 |
| 4legacy | 519 | Tanaka, Keiichi (1437) | Won 2-1 | +171532 |
| 5legacy | 337 | Ienaga, Yoshitaka (1536) | Won 2-1 | +181550 |
| 6legacy | 224 | Hamada, Keisuke (1544) | Lost 0-2 | -181532 |
| 7legacy | 433 | Oonishi, Takahisa (1511) | Lost 0-2 | -191513 |
| 8legacy | 439 | Raitano, Tristan (1535) | Lost 0-2 | -171496 |
| top | average opponent: 1527record: 4-4 | new rating: 1496 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1041 | Hotta, Kei (1455) | Lost 0-2 | -191481 |
| 2standard | 950 | Saito, Atsushi (1322) | Won 2-0 | +151496 |
| 3standard | 1374 | Komine, Syunsuke (1431) | Lost 0-2 | -191477 |
| 4standard | 1188 | Cox, Caleb (1481) | Won 2-0 | +181495 |
| 5standard | 1005 | Koseki, Daisuke (1572) | Lost 1-2 | -161479 |
| 6standard | 1172 | Ishikawa, Yoshiki (1451) | Won 2-1 | +171496 |
| 7standard | 877 | Chaen, Masaki (1431) | Won 2-0 | +171513 |
| 8standard | 860 | Goto, Tomokazu (1524) | Lost 0-2 | -181495 |
| top | average opponent: 1458record: 4-4 | new rating: 1495 | ||