Iwaki, Jun
Current rating: 1386
Record: 7-14-1
| Grand Prix Chiba 2016 (legacy) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 459 | Zhou, Lei (1506) | Lost 0-2 | -181435 |
| 2legacy | 626 | Nagaoka, Yuusuke (1483) | Lost 0-2 | -171418 |
| 3legacy | 1046 | Kanamori, Ryousuke (1495) | Lost 0-2 | -161402 |
| 4legacy | 1148 | Yonezu, Kazutoyo (1478) | Won 2-1 | +191421 |
| 5legacy | 1062 | Aramoto, Keita (1464) | Lost 1-2 | -171404 |
| 6legacy | 1049 | Kimura, Yuu (1382) | Lost 0-2 | -181386 |
| top | average opponent: 1468record: 1-5 | new rating: 1386 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 251 | Matsuoka, Kenshi (1466) | Draw 1-1 | 01469 |
| 2sealed | 313 | Koizumi, Takashi (1554) | Lost 0-2 | -171452 |
| 3sealed | 515 | Yamazaki, Takashi (1435) | Lost 0-2 | -181434 |
| 4sealed | 514 | Yamamoto, Masayuki (1455) | Won 2-0 | +191453 |
| top | average opponent: 1477record: 1-2-1 | new rating: 1453 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 807 | Kobayashi, Naoto (1500) | Lost 0-2 | -181447 |
| 2sealed | 983 | Wada, Yusuke (1610) | Lost 1-2 | -151432 |
| 3sealed | 1103 | Kase, Tomohiro (1430) | Won 2-0 | +181450 |
| 4sealed | 969 | Yoshikawa, Takuma (1483) | Won 2-1 | +191469 |
| 5sealed | 921 | Sugioka, Hironobu (1497) | Lost 0-2 | -181451 |
| 6sealed | 953 | Kotani, Sunao (1433) | Won 2-0 | +181469 |
| top | average opponent: 1492record: 3-3 | new rating: 1469 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 10 | Ito, Hayato (1503) | Lost 1-2 | -181482 |
| 2modern | 594 | Ishii, Yuki (1430) | Won 2-1 | +171499 |
| 3modern | 446 | Kawai, Shota (1502) | Lost 0-2 | -181481 |
| 4modern | 543 | Nakamoto, Ryuuta (1498) | Lost 0-2 | -181463 |
| 5modern | 591 | Hanyuu, Kento (1465) | Won 2-0 | +191482 |
| 6modern | 461 | Kawano, Junya (1542) | Lost 0-2 | -171465 |
| top | average opponent: 1490record: 2-4 | new rating: 1465 | ||