Kawahara, Tadashi
Current rating: 1513
Record: 7-7
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 558 | Huang, Tzu Jui (1500) | Won 2-0 | +181522 |
| 2standard | 456 | Nagano, Keita (1699) | Lost 1-2 | -151507 |
| 3standard | 992 | Kaizu, Hareta (1746) | Won 2-0 | +231530 |
| 4standard | 765 | Ishizaka, Akira (Gunma) (1518) | Won 2-1 | +171547 |
| 5standard | 430 | Horikoshi, Takayuki (1661) | Lost 0-2 | -161531 |
| 6standard | 529 | Ng, Jansen (1483) | Lost 1-2 | -181513 |
| 7standard | 997 | Imazawa, Junpei (1487) | Won 2-1 | +171530 |
| 8standard | 838 | Ookura, Haruka (1586) | Lost 0-2 | -171513 |
| average opponent: 1585record: 4-4 | new rating: 1513 | |||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 777 | I., Masato (1500) | Won 2-0 | +181518 |
| 2sealed | 779 | K., Masatoshi (1518) | Won 2-0 | +181536 |
| 3sealed | 771 | Mochizuki, Yuusuke (1688) | Won 2-1 | +211557 |
| 4sealed | 675 | Nakamura, Yuuki (1649) | Lost 0-2 | -171540 |
| 5sealed | 723 | N., Kazuma (1534) | Lost 1-2 | -181522 |
| 6sealed | 872 | Yada, Kazuki (1516) | Lost 1-2 | -181504 |
| average opponent: 1567record: 3-3 | new rating: 1504 | |||