Hirai, Kazuki
Current rating: 1434
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 694 | Winkler, Josef (1601) | Lost 1-2 | -151427 |
| 2standard | 893 | Nagata, Satoshi (1476) | Won 2-0 | +191446 |
| 3standard | 814 | Kudo, Koichi (1679) | Lost 0-2 | -141432 |
| 4standard | 898 | Nakajima, Syuro (1534) | Lost 0-2 | -161416 |
| 5standard | 959 | Goto, Katsuhiro (1462) | Won 2-1 | +191435 |
| 6standard | 792 | Bu, Weipei (1429) | Won 2-1 | +181453 |
| 7standard | 734 | Kakimoto, Yuki (1437) | Lost 1-2 | -191434 |
| top | average opponent: 1517record: 3-4 | new rating: 1434 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 544 | Murata, Shunya (1485) | Lost 1-2 | -181467 |
| 2sealed | 632 | Hirosawa, Yuuichirou (1547) | Lost 0-2 | -171450 |
| 3sealed | 1088 | Yoshida, Mitsutaka (1016) | Won 2-1 | +111461 |
| 4sealed | 858 | Hasegawa, Tsuneyuki (1422) | Lost 1-2 | -191442 |
| top | average opponent: 1368record: 1-3 | new rating: 1442 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 858 | Odagiri, Mato (1500) | Won 2-0 | +181518 |
| 2standard | 400 | Horikawa, Shota (1535) | Lost 0-2 | -181500 |
| 3standard | 1266 | Takahashi, Muneaki (1461) | Won 2-0 | +181518 |
| 4standard | 904 | Tonozaki, Hiroki (1499) | Lost 0-2 | -191499 |
| 5standard | 856 | Bandou, Junichirou (1726) | Lost 1-2 | -141485 |
| 6standard | 1241 | Kishikawa, Norimasa (1452) | Lost 1-2 | -181467 |
| 7standard | 1237 | Tatematsu, Yuichi (1462) | Won 2-1 | +181485 |
| top | average opponent: 1519record: 3-4 | new rating: 1485 | ||