Hirata, Keisuke4111
Current rating: 1492
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 495 | Masaki, Yuji (1500) | Won 2-0 | +191485 |
| 2sealed | 405 | Shiraishi, Shinji (1373) | Won 2-1 | +161501 |
| 3sealed | 255 | Itodani, Tetsurou (1685) | Won 2-1 | +211522 |
| 4sealed | 170 | Haritani, Ryosuke (1688) | Won 2-1 | +211543 |
| 5sealed | 21 | Kikuchi, Masaki (1594) | Lost 1-2 | -171526 |
| 6sealed | 85 | Kiriake, Sho (1567) | Lost 0-2 | -171509 |
| 7sealed | 347 | Nishimura, Kazuhiro (1545) | Lost 0-2 | -171492 |
| top | average opponent: 1565record: 4-3 | new rating: 1492 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 437 | Motoyama, Souichirou (1443) | Won 2-1 | +171500 |
| 2sealed | 155 | Ikeda, Takahiro (1704) | Won 2-0 | +221522 |
| 3sealed | 269 | Kanehira, Haruki (1497) | Lost 1-2 | -191503 |
| 4sealed | 531 | Hayashi, Hisaaki (1449) | Lost 0-2 | -191484 |
| 5sealed | 745 | Sakurabayashi, Gaku (1494) | Lost 1-2 | -181466 |
| top | average opponent: 1517record: 2-3 | new rating: 1466 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Utugi, Furato (1438) | Won 2-0 | +171517 |
| 2sealed | 145 | Tsuchiya, Mihoko (1518) | Won 2-1 | +181535 |
| 3sealed | 51 | Sugiyama, Takahiro (1574) | Lost 0-2 | -171518 |
| 4sealed | 276 | Wada, Yuusaku (1472) | Won 2-1 | +171535 |
| 5sealed | 114 | Takeuchi, Yuu (1537) | Lost 0-2 | -181517 |
| 6sealed | 270 | Yasufuku, Akihiro (1615) | Lost 0-2 | -161501 |
| 7sealed | 268 | Owaki, Kosuke (1504) | Lost 0-2 | -181483 |
| top | average opponent: 1522record: 3-4 | new rating: 1483 | ||