Ishii, Kouta
Current rating: 1466
Record: 3-5
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 52 | Maeda, Hinata (1500) | Lost 1-2 | -181462 |
| 2standard | 868 | Hirano, Sigenobu (1481) | Won 2-0 | +191481 |
| 3standard | 933 | Toyooka, Shinichi (1580) | Won 2-1 | +201501 |
| 4standard | 880 | Ohkuma, Atushi (1517) | Won 2-0 | +181519 |
| 5standard | 411 | Masuko, Daisuke (1526) | Lost 1-2 | -181501 |
| 6standard | 770 | Onishi, Akira (1467) | Lost 1-2 | -191482 |
| 7standard | 848 | Fujikura, Akinori (1562) | Lost 0-2 | -161466 |
| average opponent: 1519record: 3-4 | new rating: 1466 | |||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 286 | Uchida, Tomoaki (1395) | Lost 0-2 | -201480 |
| record: 0-1 | new rating: 1480 | |||