Ishikawa, Seiji
Current rating: 1564
Record: 11-9
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 168 | Kawabata, Tsubasa (1500) | Won 2-0 | +191468 |
| 2standard | 76 | Shiba, Naoto (1540) | Lost 0-2 | -171451 |
| 3standard | 342 | Imamura, Norihide (1424) | Won 2-0 | +181469 |
| 4standard | 187 | Shimada, Hiroya (1801) | Lost 0-2 | -131456 |
| 5standard | 302 | Hayashi, Kazuya (1504) | Won 2-0 | +191475 |
| 6standard | 347 | Ishiguro, Satoshi (1596) | Won 2-0 | +211496 |
| 7standard | 145 | Kasuga, Ryosuke (1563) | Won 2-0 | +191515 |
| 8standard | 111 | Kojima, Yoshifumi (1522) | Won 2-1 | +181533 |
| 9standard | 55 | Maenosono, Kenta (1576) | Won 2-0 | +191552 |
| 10standard | 79 | Tsujikawa, Taiga (1671) | Lost 1-2 | -161536 |
| 11standard | 69 | Yukuhiro, Ken (2052) | Won 2-0 | +261562 |
| 12standard | 36 | Sasaki, Yuusuke H (1572) | Lost 0-2 | -171545 |
| 13standard | 67 | Masuda, Shougo (1578) | Won 2-1 | +181563 |
| 14standard | 37 | Koretomo, Yuji (1516) | Won 2-1 | +171580 |
| 15standard | 44 | Maeno, Kazuha (1663) | Lost 0-2 | -161564 |
| average opponent: 1605record: 10-5 | new rating: 1564 | |||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 701 | Katayama, Hidenori (1715) | Lost 1-2 | -141486 |
| 2sealed | 968 | K., Hiroshi (1523) | Won 2-0 | +191505 |
| 3sealed | 908 | Suzuki, Akira3942 (1482) | Lost 1-2 | -191486 |
| 4sealed | 1066 | Suzuki, Masaya (1397) | Lost 0-2 | -191467 |
| 5sealed | 1044 | Whittaker, Stephen (1484) | Lost 0-2 | -181449 |
| average opponent: 1520record: 1-4 | new rating: 1449 | |||