Kato, Hiroki3246
Current rating: 1567
Record: 21-19
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 622 | Hashimoto, Satoshi 9278 (1524) | Lost 0-2 | -201571 |
| 2sealed | 689 | Toyokawa, Kei (1458) | Won 2-0 | +161587 |
| 3sealed | 795 | Tanahashi, Hirofumi (1471) | Lost 0-2 | -201567 |
| 4sealed | 980 | Iwaki, Tetsuya (1607) | Won 2-0 | +191586 |
| 5sealed | 637 | Ito, Shinya (1503) | Lost 1-2 | -191567 |
| top | average opponent: 1513record: 2-3 | new rating: 1567 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 207 | Sakamoto, Satoshi (1660) | Won 2-1 | +201575 |
| 2standard | 420 | Matsuda, Yukio (1826) | Won 2-0 | +231598 |
| 3standard | 122 | Toyota, Hiroki (1570) | Lost 1-2 | -191579 |
| 4standard | 286 | Nakamura, Ryouta5022 (1485) | Lost 1-2 | -201559 |
| 5standard | 584 | Kiuchi, Takahiro (1482) | Won 2-1 | +171576 |
| 6standard | 546 | Matsumoto, Yoshifumi (1583) | Won 2-0 | +181594 |
| 7standard | 382 | Shen, Yufei (1529) | Lost 1-2 | -191575 |
| 8standard | 462 | Minami, Yoshihisha (1453) | Won 2-1 | +161591 |
| top | average opponent: 1573record: 5-3 | new rating: 1591 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 732 | Nagase, Iori (1485) | Lost 1-2 | -171425 |
| 2standard | 914 | Kimura, Kazunari (1482) | Won 2-1 | +191444 |
| 3standard | 924 | Sawai, Fuka (1459) | Won 2-0 | +191463 |
| 4standard | 703 | Tonouchi, Keita (1768) | Won 2-0 | +231486 |
| 5standard | 412 | Yeh, Rueyjer (1607) | Won 2-0 | +201506 |
| 6standard | 358 | Kato, Naoya (1406) | Lost 0-2 | -201486 |
| 7standard | 519 | Murayama, Kyohei (1532) | Won 2-1 | +191505 |
| 8standard | 327 | Oono, Seita (1658) | Won 2-0 | +211526 |
| 9standard | 96 | Inagaki, Yukihiro (1535) | Lost 1-2 | -181508 |
| 10standard | 170 | Kakinokida, Takuhito (1619) | Won 2-0 | +201528 |
| 11standard | 114 | Ichikawa, Hideyuki (1602) | Won 2-1 | +191547 |
| 12standard | 103 | Kojima, Tatuya (1785) | Lost 0-2 | -131534 |
| 13standard | 120 | Hashigaya, Wataru (1604) | Won 2-1 | +191553 |
| 14standard | 89 | Naganawa, Yuuki (1584) | Won 2-1 | +181571 |
| 15standard | 73 | Hamada, Akira (1665) | Lost 1-2 | -161555 |
| top | average opponent: 1586record: 10-5 | new rating: 1555 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 716 | Okano, Toshiya (1745) | Lost 0-2 | -131456 |
| 2sealed | 867 | Sasaki, Shou (1580) | Lost 1-2 | -151441 |
| 3sealed | 1149 | Koiwa, Daijiro (1464) | Won 2-1 | +181459 |
| 4sealed | 1041 | Sun, Yu (1534) | Lost 1-2 | -171442 |
| top | average opponent: 1581record: 1-3 | new rating: 1442 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2087 | Oota, Ryou (1500) | Won 2-1 | +181506 |
| 2sealed | 2121 | Abiko, Haduki (1406) | Lost 1-2 | -201486 |
| 3sealed | 2256 | Tsuda, Tomohiro (1486) | Won 2-1 | +181504 |
| 4sealed | 2246 | Fukuda, Shouhei (1555) | Lost 0-2 | -171487 |
| 5sealed | 2296 | Forsberg, Alvin (1499) | Lost 0-2 | -181469 |
| top | average opponent: 1489record: 2-3 | new rating: 1469 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 864 | Suda, Makoto (1485) | Won 2-0 | +181518 |
| 2sealed | 688 | Yaoita, Akihiro (1577) | Lost 0-2 | -171501 |
| 3sealed | 919 | Cho, Kou (1791) | Lost 1-2 | -131488 |
| top | average opponent: 1618record: 1-2 | new rating: 1488 | ||