Koide, Hirohito
Current rating: 1494
Record: 3-3
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 354 | Kobayashi, Jun0116 (1317) | Lost 0-2 | -211479 |
| 2sealed | 652 | Naito, Yuuki (1379) | Lost 1-2 | -201459 |
| 3sealed | 1041 | Satou, Takashi (1437) | Won 2-0 | +171476 |
| 4sealed | 841 | Satou, Takamasa (1472) | Won 2-1 | +181494 |
| 5sealed | 550 | Itou, Kuninosuke (1278) | Won 2-0 | +151509 |
| 6sealed | 577 | Nakai, Yutaka (1712) | Lost 1-2 | -151494 |
| average opponent: 1433record: 3-3 | new rating: 1494 | |||