Sumikawa, Kyohei
Current rating: 1459
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 19 | Iwasaki, Junya (1585) | Won 2-1 | +211472 |
| 2standard | 268 | Kawamata, Daisuke (1637) | Won 2-0 | +211493 |
| 3standard | 423 | Maeda, Takuma (1572) | Lost 1-2 | -171476 |
| 4standard | 365 | Hyakuda, Atsushi (1528) | Lost 0-2 | -171459 |
| top | average opponent: 1580record: 2-2 | new rating: 1459 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 469 | Daisaka, Yuta (1500) | Lost 0-2 | -181446 |
| 2modern | 616 | Tamaki, Akira (1647) | Lost 1-2 | -141432 |
| 3modern | 1070 | Yokoyama, Yuya (1465) | Won 2-0 | +191451 |
| 4modern | 1109 | Hatakeyama, Yuta (1482) | Won 2-0 | +181469 |
| 5modern | 826 | Furuta, Masayuki (1460) | Lost 0-2 | -181451 |
| top | average opponent: 1511record: 2-3 | new rating: 1451 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 243 | Fukui, Ryota (1500) | Lost 1-2 | -181482 |
| 2standard | 856 | Takahashi, Osamu (1499) | Won 2-0 | +181500 |
| 3standard | 891 | Itou, Makoto3971 (1472) | Lost 0-2 | -181482 |
| 4standard | 958 | Kimura, Takahiro (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1488record: 1-3 | new rating: 1464 | ||