Ishii, Hiroshi
Current rating: 1503
Record: 4-4
| Grand Prix Yokohama 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 92 | Yamada, Yuta (1410) | Won 2-0 | +161516 |
| 2modern | 522 | Goto, Yuki (1543) | Won 2-0 | +191535 |
| 3modern | 164 | Tsuruoka, Shouta (1562) | Lost 0-2 | -181517 |
| 4modern | 678 | Satou, Tsubasa (1730) | Lost 1-2 | -141503 |
| 5modern | 851 | Carlos, Aaron (1624) | Lost 0-2 | -161487 |
| 6modern | 885 | Kinoshita, Akira (1399) | Lost 1-2 | -191468 |
| 7modern | 790 | Aizu, Hiroto (1460) | Won 2-1 | +181486 |
| 8modern | 611 | Gotou, Hiroki (1448) | Won 2-0 | +171503 |
| average opponent: 1522record: 4-4 | new rating: 1503 | |||