Ikarashi, Kou
Current rating: 1500
| Grand Prix Yokohama 2019 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 575 | Someoka, Takuya (1500) | Lost 0-2 | -181463 |
| 2modern | 797 | Matsuura, Jo (1462) | Won 2-0 | +181481 |
| 3modern | 831 | Kamezawa, Yoshifumi (1433) | Won 2-0 | +171498 |
| 4modern | 385 | Nagoya, Ryouta (1444) | Lost 1-2 | -191479 |
| 5modern | 656 | Tanaka, Tomoya (1524) | Lost 1-2 | -171462 |
| 6modern | 898 | Takahashi, Ryunosuke (1356) | Won 2-1 | +161478 |
| 7modern | 621 | Nose, Shunsuke (1713) | Won 2-1 | +221500 |
| top | average opponent: 1490record: 4-3 | new rating: 1500 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 14 | Nakayama, Kenji (1500) | Lost 1-2 | -181462 |
| 2modern | 342 | Ishikawa, Masami (1493) | Lost 0-2 | -171445 |
| 3modern | 534 | Fujimoto, Masatada (1461) | Won 2-0 | +181463 |
| 4modern | 514 | Omura, Mototsugu (1485) | Won 2-1 | +191482 |
| 5modern | 433 | Ishigami, Nobuhide (1447) | Won 2-0 | +171499 |
| 6modern | 273 | Sugiyama, Takanori (1491) | Lost 0-2 | -181481 |
| top | average opponent: 1479record: 3-3 | new rating: 1481 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 340 | Kitamura, Shingo (1500) | Won 2-1 | +181518 |
| 2sealed | 242 | Shin, Takahiro (1517) | Lost 0-2 | -181500 |
| 3sealed | 418 | Benison, Brian (1390) | Lost 0-2 | -201480 |
| top | average opponent: 1469record: 1-2 | new rating: 1480 | ||