Iiduka, Ryo
Current rating: 1500
Record: 2-2-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 482 | Nagase, Yoshinobu (1448) | Draw 1-1 | -11499 |
| 2sealed | 529 | Tobo, Hayato (1626) | Won 2-1 | +201519 |
| 3sealed | 554 | Shimazaki, Hirokazu (1532) | Lost 0-2 | -171502 |
| 4sealed | 761 | Hirosawa, Takahiro (1432) | Won 2-1 | +161518 |
| 5sealed | 524 | Matsumoto, Kazuma 0580 (1526) | Lost 0-2 | -181500 |
| average opponent: 1513record: 2-2-1 | new rating: 1500 | |||