Hiroka, Hideki
Current rating: 1464
Record: 1-3
| Grand Prix Kobe 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 704 | Takakura, Shota (1672) | Lost 0-2 | -151485 |
| 2modern | 663 | Kawaguchi, Ryosei (1482) | Won 2-1 | +181503 |
| 3modern | 942 | Tadamoto, Seiji (1481) | Lost 1-2 | -181485 |
| 4modern | 1135 | Kato, Naoya (1359) | Lost 0-2 | -211464 |
| average opponent: 1498record: 1-3 | new rating: 1464 | |||