Shirokoshi, Keita
Current rating: 1469
Record: 3-5
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 249 | Hayashi, Naoyuki (1466) | Won 2-0 | +181502 |
| 2pioneer | 25 | Suzuki, Kazuhiro 4218 (1727) | Lost 0-2 | -141488 |
| 3pioneer | 652 | Kubota, Youkou (1466) | Lost 0-2 | -191469 |
| average opponent: 1553record: 1-2 | new rating: 1469 | |||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 688 | Sawada, Tetsushi (1583) | Won 2-1 | +201520 |
| 2modern | 343 | Mitsuboshi, Daisuke (1491) | Won 2-1 | +171537 |
| 3modern | 527 | Kawano, Naoto (1533) | Lost 1-2 | -181519 |
| 4modern | 689 | Hirano, Mikita (1701) | Lost 0-2 | -151504 |
| 5modern | 617 | Akimoto, Syouta (1385) | Lost 0-2 | -201484 |
| average opponent: 1539record: 2-3 | new rating: 1484 | |||