Chiba, Toshiki
Current rating: 1397
Record: 1-7
| Grand Prix Yokohama 2019 (modern) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 151 | Ohashi, Gaku (1612) | Lost 0-2 | -151450 |
| 2modern | 780 | Echikawa, Yusuke (1462) | Lost 0-2 | -181432 |
| 3modern | 1170 | Maruyama, Youtaro (1466) | Lost 1-2 | -171415 |
| 4modern | 1176 | Liang, Lichung (1445) | Lost 0-2 | -181397 |
| average opponent: 1496record: 0-4 | new rating: 1397 | |||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 325 | Kumada, Keiichiro (1513) | Lost 1-2 | -181482 |
| 2sealed | 807 | Sekine, Hiroya (1483) | Won 2-1 | +181500 |
| 3sealed | 894 | Sakurai, Ryota (1504) | Lost 1-2 | -181482 |
| 4sealed | 1042 | Takatsuka, Yuuki (1523) | Lost 0-2 | -171465 |
| average opponent: 1506record: 1-3 | new rating: 1465 | |||