Seo, Hiroki
Current rating: 1664
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 245 | Yamazaki, Yuki (1535) | Won 2-1 | +181548 |
| 2standard | 379 | Yamamoto, Takahiro (1760) | Won 2-1 | +221570 |
| 3standard | 20 | Tanji, Kensuke (1834) | Lost 0-2 | -131557 |
| 4standard | 468 | Takei, Tomoyuki (1436) | Lost 0-2 | -201537 |
| 5standard | 543 | Shimoda, Akihiro (1272) | Won 2-1 | +131550 |
| 6standard | 312 | Aizawa, Tamotsu (1694) | Won 2-0 | +211571 |
| 7standard | 230 | Hara, Katsuaki (1551) | Won 2-1 | +171588 |
| 8standard | 130 | Uramoto, Leo (1545) | Won 2-1 | +171605 |
| 9standard | 150 | Watanabe, Kouhei 8114 (1619) | Lost 1-2 | -171588 |
| 10standard | 131 | Takahashi, Kei (1625) | Won 2-0 | +181606 |
| 11standard | 111 | Wakita, Tomoyuki (1766) | Won 2-1 | +211627 |
| 12standard | 91 | Endo, Natsumi (1697) | Lost 0-2 | -171610 |
| 13standard | 88 | Iwasawa, Fumiya (1736) | Won 2-0 | +211631 |
| 14standard | 68 | Takemoto, Shintarou (1587) | Won 2-1 | +171648 |
| 15standard | 63 | Yamada, Akinori (1564) | Won 2-1 | +161664 |
| top | average opponent: 1615record: 11-4 | new rating: 1664 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 632 | Oota, Ryou (1462) | Won 2-1 | +171522 |
| 2modern | 454 | Masaki, Arata (1415) | Won 2-1 | +161538 |
| 3modern | 432 | Seki, Yujin (1540) | Won 2-1 | +181556 |
| 4modern | 156 | Shinbo, Soutaro (1486) | Won 2-0 | +171573 |
| 5modern | 5 | Katakawa, Souta (1652) | Lost 1-2 | -161557 |
| 6modern | 235 | Kaitila, Aleksi (1607) | Won 2-1 | +191576 |
| 7modern | 60 | Mori, Tomoki (1573) | Lost 1-2 | -191557 |
| 8modern | 225 | Furuta, Akira (1552) | Won 2-0 | +181575 |
| 9modern | 236 | Nishino, Jun (1576) | Won 2-0 | +181593 |
| 10modern | 44 | Oshima, Shimpei (1619) | Lost 0-2 | -171576 |
| 11modern | 112 | Chiba, Akio (2012) | Lost 0-2 | -111565 |
| 12modern | 196 | Oomura, Takashi (1518) | Lost 0-2 | -191546 |
| 13modern | 183 | Suzuki, Kazuto (1544) | Lost 1-2 | -181528 |
| 14modern | 177 | Masuda, Satoshi (1472) | Lost 1-2 | -191509 |
| 15modern | 175 | Ishikawa, Shou (1667) | Won 2-1 | +211530 |
| top | average opponent: 1580record: 8-7 | new rating: 1530 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 367 | Okada, Masakazu (1491) | Lost 0-2 | -181482 |
| 2standard | 721 | Ishikawa, Fumiaki (1671) | Lost 0-2 | -151467 |
| 3standard | 1039 | Abumi, Joe (1466) | Won 2-0 | +181485 |
| 4standard | 857 | Matsuya, Takahiro (1245) | Lost 0-2 | -221463 |
| 5standard | 919 | Oohashi, Yoshihiro (1468) | Won 2-1 | +181481 |
| 6standard | 806 | Sato, Takatoshi (1832) | Won 2-1 | +241505 |
| top | average opponent: 1529record: 3-3 | new rating: 1505 | ||