Kusajima, Ikuo
Current rating: 1489
Record: 5-6
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 480 | Hamasaki, Masayuki (1521) | Lost 1-2 | -171471 |
| 2sealed | 638 | Ideno, Hiroshi (1427) | Won 2-0 | +171488 |
| 3sealed | 592 | Okabe, Kazuhiro (1464) | Won 2-1 | +181506 |
| 4sealed | 406 | Imazawa, Junpei (1538) | Lost 0-2 | -181488 |
| 5sealed | 820 | Miyamoto, Naoki (1465) | Won 2-1 | +181506 |
| 6sealed | 428 | Takahashi, Kei (1583) | Lost 0-2 | -171489 |
| average opponent: 1500record: 3-3 | new rating: 1489 | |||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 377 | Hutchens, Jered (1500) | Won 2-1 | +181518 |
| 2legacy | 368 | Kishida, Shin (1518) | Won 2-0 | +181536 |
| 3legacy | 299 | Liu, Zhuoran (1773) | Lost 1-2 | -141522 |
| 4legacy | 372 | Murata, Shunya (1564) | Lost 0-2 | -171505 |
| 5legacy | 616 | Takano, Hayato (1566) | Lost 1-2 | -171488 |
| average opponent: 1584record: 2-3 | new rating: 1488 | |||