Ikeda, Kohei
Current rating: 1518
Record: 11-11-2
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 496 | Hasegawa, Kazuhiko3707 (1515) | Lost 0-2 | -171474 |
| 2sealed | 827 | Hayami, Toshihiro (1494) | Won 2-0 | +181492 |
| 3sealed | 625 | Noguchi, Yuki (1450) | Won 2-0 | +171509 |
| 4sealed | 641 | Zhao, Jin (1579) | Lost 1-2 | -171492 |
| 5sealed | 582 | Ishikami, Naotaka (1664) | Won 2-1 | +221514 |
| 6sealed | 529 | Deng, Jun (1577) | Won 2-0 | +191533 |
| 7sealed | 332 | Ichikawa, Hideyuki (1705) | Lost 1-2 | -151518 |
| top | average opponent: 1569record: 4-3 | new rating: 1518 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1546 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 764 | Kamoi, Ryo (1612) | Lost 0-2 | -171529 |
| 2sealed | 943 | Nakano, Kengo (1482) | Lost 1-2 | -191510 |
| 3sealed | 1165 | Endo, Yusuke (1441) | Lost 0-2 | -191491 |
| top | average opponent: 1512record: 0-3 | new rating: 1491 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 412 | Saito, Naruto (1500) | Won 2-1 | +181469 |
| 2sealed | 202 | Seto, Masakazu (1429) | Won 2-1 | +181487 |
| 3sealed | 9 | Kudou, Kazuki (1500) | Draw 1-1 | 01487 |
| 4sealed | 129 | Suzuki, Shinya (1562) | Won 2-0 | +191506 |
| 5sealed | 67 | Higashimura, Kazuya (1520) | Won 2-0 | +191525 |
| 6sealed | 33 | Sakamoto, Takumi (1544) | Won 2-0 | +181543 |
| 7sealed | 18 | Matthew, Matsuyama (1587) | Draw 1-1 | +11544 |
| 8sealed | 55 | Tanaka, Masamitsu (1565) | Won 2-0 | +181562 |
| 9sealed | 31 | Nakamichi, Daisuke (1672) | Lost 0-2 | -161546 |
| top | average opponent: 1542record: 6-1-2 | new rating: 1546 | ||
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Kawanaka, Yoshiaki (1632) | Lost 1-2 | -161484 |
| 2sealed | 134 | Yoshikawa, Yuusuke (1658) | Won 2-0 | +221506 |
| 3sealed | 117 | Nakagawa, Tsukasa (1419) | Lost 1-2 | -201486 |
| 4sealed | 198 | Fukuta, Shingo (1522) | Lost 1-2 | -171469 |
| 5sealed | 190 | Ashikari, Yuuki (1467) | Lost 0-2 | -181451 |
| top | average opponent: 1539record: 1-4 | new rating: 1451 | ||