Ishimatsu, Keiichi
Current rating: 1522
Record: 4-3
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 172 | Nakajima, Sachio (1500) | Lost 1-2 | -181482 |
| 2standard | 272 | Hotta, Takeo (1468) | Won 2-0 | +181500 |
| 3standard | 313 | Ushio, Atsushi (1664) | Lost 1-2 | -151485 |
| 4standard | 432 | Nomura, Takeshi (1447) | Won 2-0 | +171502 |
| 5standard | 393 | Harada, Daisaku (1632) | Won 2-1 | +201522 |
| 6standard | 348 | Takisaka, Toru (1516) | Lost 0-2 | -181504 |
| 7standard | 314 | Yamamoto, Yousuke (1500) | Won 2-1 | +181522 |
| average opponent: 1532record: 4-3 | new rating: 1522 | |||