Isoda, Tetsutaro
Current rating: 1463
Record: 4-6
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Iiri, Takahiro (1492) | Lost 0-2 | -181482 |
| 2sealed | 549 | Yoshimoto, Takashi (1311) | Lost 1-2 | -211461 |
| 3sealed | 1024 | Izawa, Kazuki (1485) | Lost 0-2 | -181443 |
| 4sealed | 1052 | Minobe, Yoshihiro (1553) | Won 2-0 | +201463 |
| average opponent: 1460record: 1-3 | new rating: 1463 | |||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 182 | Arakawa, Ryusei (1500) | Won 2-0 | +181518 |
| 2sealed | 301 | Furihara, Kazuki (1319) | Lost 1-2 | -221496 |
| 3sealed | 899 | Saito, Shigeru (1426) | Lost 0-2 | -191477 |
| 4sealed | 1050 | Ito, Fumitaka (1502) | Won 2-1 | +191496 |
| 5sealed | 604 | Imaoka, Syoichi (1580) | Won 2-0 | +191515 |
| 6sealed | 550 | Mizutani, Yosuke (1675) | Lost 1-2 | -151500 |
| average opponent: 1500record: 3-3 | new rating: 1500 | |||