Ishiyama, Kenichi
Current rating: 1473
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 270 | Tamura, Youhei6302 (1519) | Lost 0-2 | -181473 |
| top | record: 0-1 | new rating: 1473 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 759 | Hayashi, Syouichirou (1595) | Won 2-1 | +201503 |
| 2sealed | 344 | Horie, Tooru (1695) | Won 2-0 | +211524 |
| 3sealed | 531 | Iwase, Hirokazu (1487) | Won 2-0 | +171541 |
| 4sealed | 29 | Kashiwase, Kazuya (1570) | Lost 1-2 | -171524 |
| 5sealed | 400 | Takahashi, Kazuhiro (1504) | Lost 0-2 | -181506 |
| 6sealed | 555 | Hirata, Keiitirou (1539) | Won 2-1 | +181524 |
| 7sealed | 462 | Takahashi, Ryo (1552) | Lost 0-2 | -171507 |
| 8sealed | 690 | Takata, Kouhei (1620) | Lost 0-2 | -161491 |
| top | average opponent: 1570record: 4-4 | new rating: 1491 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 764 | Suzuike, Fumiyasu (1550) | Won 2-1 | +191519 |
| 3sealed | 661 | Honda, Yuji (1591) | Lost 0-2 | -171502 |
| 4sealed | 836 | Sashida, Tomoro (1444) | Won 2-1 | +171519 |
| 5sealed | 765 | Ogawa, Ryou (1507) | Lost 0-2 | -181501 |
| 6sealed | 899 | Ooba, Tomohiro (1484) | Lost 1-2 | -181483 |
| top | average opponent: 1515record: 2-3 | new rating: 1483 | ||