Iwasaki, Yuichi
Current rating: 1385
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 460 | Mikami, Takaya (1457) | Lost 1-2 | -181416 |
| 2sealed | 637 | Itou, Takanori (1596) | Lost 1-2 | -141402 |
| 3sealed | 997 | Mishiro, Norihito (1491) | Lost 0-2 | -171385 |
| top | average opponent: 1515record: 0-3 | new rating: 1385 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 381 | Shigeyuki, Sato (1515) | Lost 0-2 | -171428 |
| 2legacy | 732 | Oishi, Go (1499) | Draw 1-1 | +11429 |
| 3legacy | 1023 | Yamaguchi, Wataru (1482) | Won 2-1 | +191448 |
| 4legacy | 800 | Itou, Takahiro (1471) | Won 2-1 | +191467 |
| 5legacy | 558 | Nojima, Ken (1515) | Lost 1-2 | -171450 |
| 6legacy | 747 | Sugimoto, Taiki (1578) | Lost 1-2 | -161434 |
| top | average opponent: 1510record: 2-3-1 | new rating: 1434 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1369 | Takuwa, Kazuya (1500) | Lost 0-2 | -181482 |
| 2sealed | 1379 | Sasada, Youhei (1456) | Lost 1-2 | -181464 |
| 3sealed | 1310 | Yamazaki, Shinpei (1430) | Won 2-0 | +171481 |
| 4sealed | 1165 | Touma, Norihiro (1498) | Lost 1-2 | -181463 |
| 5sealed | 1217 | Kawano, Takahiro (1432) | Lost 0-2 | -181445 |
| top | average opponent: 1463record: 1-4 | new rating: 1445 | ||