Yonaha, Hirokazu
Current rating: 1416
| Grand Prix Yokohama 2019 (modern) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 587 | Lu, Bingqing (1466) | Won 2-0 | +181468 |
| 2modern | 372 | Shoji, Keishi (1622) | Lost 1-2 | -151453 |
| 3modern | 675 | Goto, Kosuke (1357) | Lost 1-2 | -201433 |
| 4modern | 873 | O, Minami (1480) | Lost 1-2 | -171416 |
| top | average opponent: 1481record: 1-3 | new rating: 1416 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 301 | Yang, Jun-mo (1621) | Won 2-1 | +211504 |
| 2sealed | 457 | Miyagishi, Kohei (1500) | Lost 0-2 | -191485 |
| 3sealed | 613 | Satou, Kenichi (1522) | Lost 1-2 | -171468 |
| 4sealed | 890 | Muroya, Ryusei (1467) | Lost 0-2 | -181450 |
| top | average opponent: 1528record: 1-3 | new rating: 1450 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 968 | Nishiyama, Naoki (1500) | Lost 0-2 | -181482 |
| 2sealed | 1254 | Shimojo, Koji (1486) | Won 2-1 | +181500 |
| 3sealed | 1257 | Kawakami, Takehito (1554) | Lost 0-2 | -171483 |
| top | average opponent: 1513record: 1-2 | new rating: 1483 | ||