Ishikawa, Takuma (Okayama)
Current rating: 1415
Record: 2-7
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 7 | Tee, Eric (1483) | Lost 0-2 | -181466 |
| 3standard | 946 | Nakai, Yuuta (1467) | Lost 1-2 | -181448 |
| 4standard | 1428 | Li, Chi (1604) | Lost 0-2 | -151433 |
| 5standard | 1413 | Endo, Yusuke (1448) | Lost 0-2 | -181415 |
| average opponent: 1500record: 0-4 | new rating: 1415 | |||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 589 | Tamura, Satoshi (1463) | Won 2-0 | +171517 |
| 2legacy | 658 | Isurugi, Hideyuki (1504) | Won 2-0 | +181535 |
| 3legacy | 657 | Shiotani, Makoto (1496) | Lost 0-2 | -191516 |
| 4legacy | 715 | Sutou, Takuo (1668) | Lost 1-2 | -151501 |
| 5legacy | 805 | Nagahiro, Masato (1542) | Lost 0-2 | -171484 |
| average opponent: 1535record: 2-3 | new rating: 1484 | |||