Hiyama, Seiya
Current rating: 1401
Record: 11-19-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1374 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 303 | Negishi, Haruki (1599) | Won 2-1 | +221396 |
| 2pioneer | 200 | Nakamura, Ryota (1501) | Won 2-0 | +201416 |
| 3pioneer | 35 | Takahashi, Naoya 3755 (1475) | Won 2-1 | +191435 |
| 4pioneer | 122 | Ichikawa, Hideyuki (1801) | Lost 1-2 | -121423 |
| 5pioneer | 382 | Masui, Shuryu (1505) | Won 2-1 | +201443 |
| 6pioneer | 229 | Lam, Francis (1825) | Lost 1-2 | -111432 |
| 7pioneer | 321 | Kashiwagi, Ryohei (1753) | Lost 0-2 | -131419 |
| 8pioneer | 333 | Qian, Zhengrui (1391) | Lost 0-2 | -181401 |
| top | average opponent: 1606record: 4-4 | new rating: 1401 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 404 | Odagiri, Mato (1595) | Lost 1-2 | -151407 |
| 2modern | 906 | Watanabe, Ryohei (1484) | Lost 0-2 | -171390 |
| 3modern | 1107 | Hisamatsu, Hiromu (1394) | Won 2-1 | +181408 |
| 4modern | 1046 | Akabane, Takahiro (1464) | Lost 0-2 | -171391 |
| 5modern | 1037 | Takehana, Atsushi (1430) | Lost 0-2 | -171374 |
| top | average opponent: 1473record: 1-4 | new rating: 1374 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 391 | Tanabe, Koichiro (1393) | Draw 1-1 | -11451 |
| 2legacy | 353 | Kouyama, Ryu (1455) | Lost 0-2 | -181433 |
| 3legacy | 583 | Ohashi, Ryo (1485) | Lost 0-2 | -171416 |
| 4legacy | 639 | Nishimura, Koichi (1370) | Won 2-0 | +171433 |
| 5legacy | 534 | Chen, Xinrong (1621) | Lost 0-2 | -141419 |
| 6legacy | 542 | Kikuchi, Kazuki (1469) | Won 2-0 | +191438 |
| 7legacy | 435 | Hee, Jason (1551) | Lost 0-2 | -161422 |
| top | average opponent: 1478record: 2-4-1 | new rating: 1422 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 576 | Saito, Daisuke 0873 (1500) | Lost 0-2 | -181466 |
| 2modern | 713 | Ikeda, Yuuki (1503) | Lost 0-2 | -171449 |
| 3modern | 1259 | Matsushita, Kohei (1464) | Won 2-0 | +181467 |
| 4modern | 1211 | Nose, Kouta (1620) | Lost 1-2 | -151452 |
| top | average opponent: 1522record: 1-3 | new rating: 1452 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 386 | Usami, Taro (1779) | Lost 1-2 | -131487 |
| 2standard | 876 | Sugi, Takahiro (1454) | Won 2-0 | +171504 |
| 3standard | 1372 | Yamaoka, Keita (1480) | Won 2-0 | +181522 |
| 4standard | 951 | Tanaka, Kento (1486) | Lost 1-2 | -191503 |
| 5standard | 996 | Fukuhara, Yuuichirou (1503) | Won 2-1 | +181521 |
| 6standard | 679 | Takao, Akinao (1575) | Lost 1-2 | -171504 |
| 7standard | 973 | Nakamura, Kouki (1392) | Lost 0-2 | -201484 |
| top | average opponent: 1524record: 3-4 | new rating: 1484 | ||