Ishikawa, Keisuke
Current rating: 1515
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 179 | Kondo, Fumiya (1688) | Lost 0-2 | -151519 |
| 2standard | 726 | Izuoka, Yuto (1473) | Won 2-0 | +171536 |
| 3standard | 739 | Usuzawa, Yuuki (1511) | Lost 1-2 | -181518 |
| 4standard | 754 | Kagoi, Yuki (1334) | Won 2-1 | +141532 |
| 5standard | 709 | Wang, Weiliang (1541) | Lost 0-2 | -171515 |
| top | average opponent: 1509record: 2-3 | new rating: 1515 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Takai, Yuta (1500) | Won 2-0 | +181541 |
| 2standard | 43 | Sonohara, Takashi (1439) | Lost 0-2 | -201521 |
| 3standard | 268 | Li, Zhexi (1497) | Won 2-0 | +171538 |
| 4standard | 184 | Nishikawa, Masayuki (1456) | Won 2-1 | +171555 |
| 5standard | 101 | Fukuda, Yuuki (1563) | Won 2-1 | +181573 |
| 6standard | 68 | Toyota, Kazuhisa (1518) | Won 2-1 | +171590 |
| 7standard | 30 | Oomiya, Kenta (1543) | Lost 0-2 | -191571 |
| 8standard | 96 | Mizoguchi, Yoshikatsu (1562) | Lost 0-2 | -181553 |
| 9standard | 277 | Honma, Masato (1512) | Lost 0-2 | -191534 |
| top | average opponent: 1510record: 5-4 | new rating: 1534 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 951 | Sogabe, Yasuhiro (1500) | Won 2-0 | +181518 |
| 2sealed | 834 | Horie, Kazuo (1491) | Won 2-0 | +181536 |
| 3sealed | 668 | Tamada, Ryoichi (1719) | Lost 1-2 | -151521 |
| 4sealed | 940 | Kikutani, Kou (1651) | Won 2-1 | +201541 |
| 5sealed | 735 | Nomura, Hidehiro (1537) | Draw 1-1 | 01541 |
| 6sealed | 797 | Fukushima, Naoya (1542) | Lost 0-2 | -181523 |
| top | average opponent: 1573record: 3-2-1 | new rating: 1523 | ||