Iwama, Hirokazu
Current rating: 1610
Record: 32-25
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1597 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 218 | Goto, Daiki (1612) | Won 2-1 | +181615 |
| 2sealed | 72 | Izawa, Takafumi (1518) | Won 2-0 | +161631 |
| 3sealed | 202 | Arita, Kento (1727) | Lost 0-2 | -161615 |
| 4sealed | 292 | Oh, Chai Hock Andrew (1406) | Won 2-0 | +141629 |
| 5sealed | 79 | Karasawa, Ryuichi (1576) | Lost 0-2 | -191610 |
| top | average opponent: 1568record: 3-2 | new rating: 1610 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 703 | Yoshimoto, Takashi (1500) | Won 2-1 | +171607 |
| 2modern | 708 | Nakamura, Ryuji (1432) | Won 2-0 | +151622 |
| 3modern | 850 | Emori, Shinichi (1652) | Lost 0-2 | -181604 |
| 4modern | 1029 | Nishimoto, Ryota (1518) | Won 2-0 | +171621 |
| 5modern | 806 | Nishidome, Keitarou (1447) | Lost 1-2 | -221599 |
| 6modern | 906 | Motomura, Shigeru (1741) | Won 2-1 | +211620 |
| 7modern | 924 | Iwasaki, Yusuke (1556) | Lost 0-2 | -191601 |
| 8modern | 914 | Higono, Naoki (1519) | Lost 0-2 | -201581 |
| 9modern | 879 | Fukaya, Yuta (1443) | Won 2-1 | +161597 |
| top | average opponent: 1534record: 5-4 | new rating: 1597 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 128 | Gotou, Hiroyuki (1640) | Lost 0-2 | -161526 |
| 2standard | 396 | Kawakami, Teppei (1482) | Won 2-0 | +171543 |
| 3standard | 455 | Shirasaka, Shingo (1421) | Won 2-0 | +161559 |
| 4standard | 367 | kurakado, akira (1522) | Lost 1-2 | -191540 |
| 5standard | 392 | Iwasawa, Fumiya (1467) | Won 2-0 | +171557 |
| 6standard | 297 | Takamasa, Hirano (1520) | Won 2-0 | +171574 |
| 7standard | 216 | Noguchi, Takeshi (1539) | Lost 1-2 | -191555 |
| 8standard | 222 | Sakaki, Yusuke (1517) | Won 2-1 | +181573 |
| 9standard | 177 | Tagomori, Shou (1552) | Won 2-0 | +171590 |
| top | average opponent: 1518record: 6-3 | new rating: 1590 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Tashiro, Hayato (1737) | Won 2-0 | +221567 |
| 2sealed | 251 | Takai, Ryou (1518) | Won 2-1 | +171584 |
| 3sealed | 13 | Sato, Masayuki (1534) | Lost 0-2 | -191565 |
| 4sealed | 289 | Shibata, Yasumasa (1449) | Won 2-1 | +161581 |
| 5sealed | 87 | Yagawa, Masataka (1540) | Lost 0-2 | -191562 |
| 6sealed | 240 | Furukawa, Hiroyuki (1444) | Lost 1-2 | -201542 |
| top | average opponent: 1537record: 3-3 | new rating: 1542 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 265 | Okabayashi, Masanao (1608) | Won 2-1 | +201536 |
| 2standard | 32 | Yamazaki, Daisuke (1511) | Won 2-1 | +171553 |
| 3standard | 100 | Oohara, Kazumasa (1499) | Won 2-0 | +181571 |
| 4standard | 58 | Harada, Masao (1441) | Won 2-0 | +151586 |
| 5standard | 30 | Sakuma, Toshimitsu (1729) | Lost 1-2 | -151571 |
| 6standard | 118 | Hayakawa, Ryo (1503) | Won 2-0 | +161587 |
| 7standard | 37 | Yokokura, Takeshi (1513) | Won 2-1 | +171604 |
| 8standard | 12 | Okamoto, Yuuma (1542) | Lost 1-2 | -191585 |
| 9standard | 56 | Yamazaki, Shun (1493) | ID | 01585 |
| 10standard | 56 | Takahashi, Keiji (1551) | Won 2-0 | +171602 |
| 11standard | 40 | Ohnishi, Jyunpei (1623) | Lost 1-2 | -171585 |
| 12standard | 49 | Inoue, Yousuke (1539) | Lost 0-2 | -191566 |
| 13standard | 55 | Matsumoto, Takafumi (1439) | Lost 0-2 | -201546 |
| 14standard | 59 | iwase, yoshikazu (1490) | Won 2-0 | +171563 |
| 15standard | 56 | Chiba, Ryou (1600) | Lost 1-2 | -181545 |
| top | average opponent: 1539record: 8-6-1 | new rating: 1545 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 209 | Kishimoto, Hiromichi (1448) | Lost 0-0 | -191461 |
| 2sealed | 184 | Torigoe, Seitaro (1466) | Lost 1-2 | -181443 |
| 3sealed | 239 | Isomura, Ryota (1392) | Won 2-0 | +171460 |
| 4sealed | 246 | Takahashi, Teo (1534) | Won 2-0 | +201480 |
| 5sealed | 195 | Abe, Ken'Ichi (1471) | Won 2-1 | +181498 |
| 6sealed | 48 | Tanaka, Eiji (1425) | Won 2-1 | +161514 |
| 7sealed | 33 | Wakayama, Shiro (1591) | Won 2-1 | +201534 |
| 8sealed | 116 | Kanno, Masashi (1570) | Lost 0-2 | -181516 |
| top | average opponent: 1487record: 5-3 | new rating: 1516 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 30 | Saito, Takaya (1677) | Lost 0-2 | -151485 |
| 5standard | 94 | Sasaki, Tsutomu (1632) | Won 2-0 | +211506 |
| 6standard | 64 | Kaji, Tomohiro (1895) | Won 2-1 | +251531 |
| 7standard | 45 | Shiroza, Shinichiro (1556) | Lost 0-2 | -181513 |
| 8standard | 92 | Furuya, Yuuki (1559) | Lost 1-2 | -171496 |
| 9standard | 118 | Hashimoto, Yuu (1600) | Lost 1-2 | -161480 |
| top | average opponent: 1653record: 2-4 | new rating: 1480 | ||