Iwasaki, Takumi
Current rating: 1423
| Grand Prix Kobe 2017 (modern) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 313 | Adachi, Hiroaki (1500) | Won 2-0 | +201447 |
| 2modern | 143 | Lauricella, John (1511) | Won 2-0 | +191466 |
| 3modern | 508 | Sasaki, Shin (1539) | Lost 0-2 | -171449 |
| 4modern | 774 | Nagao, Yasutaka (1799) | Won 2-0 | +241473 |
| 5modern | 378 | Ishihara, Atsushi (1648) | Lost 0-2 | -151458 |
| 6modern | 754 | Yamada, Michihiro (1469) | Lost 1-2 | -171441 |
| 7modern | 824 | Amornjarusiri, Pathorn (1446) | Lost 0-2 | -181423 |
| top | average opponent: 1559record: 3-4 | new rating: 1423 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 213 | Mizoue, Atsushi (1593) | Lost 1-2 | -171480 |
| 2sealed | 917 | Hasegawa, Syoichi (1608) | Lost 1-2 | -151465 |
| 3sealed | 1144 | Suzuki, Koudai (1516) | Lost 1-2 | -171448 |
| 4sealed | 1204 | Fujikawa, Takashi (1318) | Lost 0-2 | -211427 |
| top | average opponent: 1509record: 0-4 | new rating: 1427 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 289 | Yamashita, Koichi (1537) | Won 2-0 | +191519 |
| 2legacy | 79 | Okutomi, Hiromitsu (1417) | Lost 0-2 | -201499 |
| 3legacy | 342 | Kasamatsu, Ryoma (1500) | Won 2-1 | +181517 |
| 4legacy | 157 | Kawahama, Yoshikazu (1412) | Won 2-1 | +161533 |
| 5legacy | 167 | Toma, Hiroto (1534) | Lost 1-2 | -181515 |
| 6legacy | 258 | Inui, Sei (1498) | Lost 0-2 | -181497 |
| top | average opponent: 1483record: 3-3 | new rating: 1497 | ||