Isaka, Tsuyoshi
Current rating: 1507
Record: 3-3-1
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 233 | Hayashi, Tatsuro (1598) | Won 2-0 | +201520 |
| 2sealed | 182 | Masuno, Ryosuke (1693) | Won 2-1 | +211541 |
| 3sealed | 32 | Izumi, Taiki (1532) | Won 2-0 | +181559 |
| 4sealed | 87 | Taniguchi, Hidehisa (1620) | Lost 0-2 | -171542 |
| 5sealed | 125 | Osa, Tomoki (1630) | Lost 1-2 | -171525 |
| 6sealed | 315 | Hayata, Akira (1541) | Lost 0-2 | -171508 |
| 7sealed | 254 | Abdul Wahab, Shahrul Nizam (1487) | Draw 1-1 | -11507 |
| average opponent: 1586record: 3-3-1 | new rating: 1507 | |||