Tomiyama, Katsuhiko
Current rating: 1484
Record: 4-5-1
| Grand Prix Yokohama 2019 (modern) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 3 | Koike, Yuya (1450) | Won 2-1 | +171537 |
| 2modern | 4 | Sasaki, Yusuke 1421 (1671) | Lost 1-2 | -161521 |
| 3modern | 732 | Takaya, Akio (1462) | Lost 0-2 | -191502 |
| 4modern | 976 | Yoshioka, Naoki (1487) | Lost 1-2 | -181484 |
| average opponent: 1518record: 1-3 | new rating: 1484 | |||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 532 | Watabe, Kouji (1500) | Won 2-0 | +181518 |
| 2standard | 414 | Lu, Bingqing (1540) | Won 2-1 | +181536 |
| 3standard | 458 | Ehara, Kouta (1611) | Lost 0-2 | -161520 |
| 4standard | 683 | Nishimura, Takashi5362 (1548) | Lost 1-2 | -181502 |
| 5standard | 676 | Oki, Takashi (1499) | Won 2-1 | +181520 |
| 6standard | 490 | Andou, Koutarou (1511) | Draw 1-1 | 01520 |
| average opponent: 1535record: 3-2-1 | new rating: 1520 | |||