Iizuka, Hirofumi
Current rating: 1484
Record: 11-15-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 280 | Yoshimura, Takuya (1520) | Won 2-1 | +201476 |
| 3pioneer | 46 | Hiroi, Genki (1727) | Won 2-0 | +221498 |
| 4pioneer | 58 | Ishikawa, Takuma 3754 (1692) | Lost 1-2 | -141484 |
| 5pioneer | 315 | Kaneko, Masayuki3656 (1826) | Won 2-1 | +241508 |
| 6pioneer | 173 | Watanabe, Maki (1711) | Won 2-1 | +211529 |
| 7pioneer | 90 | Fujita, Toshitake (1453) | Won 2-0 | +171546 |
| 8pioneer | 24 | Tan, Richmond (1575) | Lost 1-2 | -181528 |
| 9pioneer | 108 | Bin, Jia (1861) | Won 2-0 | +241552 |
| 10pioneer | 32 | Koike, Tomoyuki (1440) | Lost 0-2 | -201532 |
| 11pioneer | 76 | Kokubun, Takeshi (1689) | Lost 1-2 | -151517 |
| 12pioneer | 108 | Asano, Tatsuro (1554) | Lost 1-2 | -171500 |
| 13pioneer | 138 | Watanabe, Kouhei 8114 (1639) | Lost 0-2 | -161484 |
| top | average opponent: 1640record: 6-6 | new rating: 1484 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 272 | Matsumoto, Yasuyuki (1521) | Lost 1-2 | -171426 |
| 3standard | 483 | Sugimoto, Hiroaki (1601) | Draw 1-1 | +31429 |
| 4standard | 627 | Lim, Taegyun (1500) | Won 2-0 | +201449 |
| 5standard | 434 | Iwasaki, Yuusuke (1853) | Won 2-1 | +251474 |
| 6standard | 286 | Yamaguchi, Hiroshi1998 (1519) | Lost 1-2 | -181456 |
| top | average opponent: 1599record: 2-2-1 | new rating: 1456 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 39 | Shoji, Masato (1465) | Won 2-0 | +181474 |
| 3sealed | 131 | Deng, Jun (1599) | Lost 0-2 | -151459 |
| 4sealed | 378 | Yamagishi, Yuki 7656 (1543) | Won 2-0 | +191478 |
| 5sealed | 434 | Takawashi, Shun'Ichi (1489) | Lost 1-2 | -181460 |
| 6sealed | 667 | Asada, Naoya (1483) | Lost 1-2 | -171443 |
| top | average opponent: 1516record: 2-3 | new rating: 1443 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 233 | Ogawa, Shota (1725) | Won 2-0 | +221522 |
| 4sealed | 152 | Saito, Yuji (1627) | Lost 0-2 | -161506 |
| 5sealed | 173 | Sugizaki, Shunsuke (1572) | Lost 1-2 | -171489 |
| 6sealed | 614 | Sano, Futoshi (1622) | Lost 0-2 | -151474 |
| 7sealed | 592 | Yanagawa, Tomoyuki (1505) | Lost 0-2 | -181456 |
| top | average opponent: 1610record: 1-4 | new rating: 1456 | ||