Iwayama, Masatomo
Current rating: 1565
Record: 58-53-3
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 603 | Nakamura, Taro (1234) | Won 2-0 | +131548 |
| 2sealed | 117 | Takanohashi, Tatsuya (1351) | Won 2-0 | +141562 |
| 3sealed | 449 | Kanayama, Haruki (1436) | Won 2-0 | +161578 |
| 4sealed | 118 | Kirino, Ryohei (1690) | Won 2-0 | +201598 |
| 5sealed | 8 | Wang, Alfred (1588) | Lost 1-2 | -181580 |
| 6sealed | 167 | Harada, Masato (1599) | Won 2-1 | +181598 |
| 7sealed | 125 | Yamada, Yasushi (1691) | Lost 0-2 | -161582 |
| 8sealed | 312 | Ishida, Shinpei (1612) | Lost 1-2 | -171565 |
| top | average opponent: 1525record: 5-3 | new rating: 1565 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 636 | Beppu, Takashi (1524) | Lost 1-2 | -191556 |
| 2modern | 927 | Nishio, Shota (1479) | Lost 1-2 | -191537 |
| 4modern | 887 | Aoi, Masashi (1456) | Won 2-1 | +161553 |
| 5modern | 787 | Yokota, Naoto (1559) | Lost 1-2 | -181535 |
| top | average opponent: 1504record: 1-3 | new rating: 1535 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 198 | Hara, Katsuaki (1534) | Won 2-1 | +171615 |
| 2standard | 335 | Oono, Seita (1628) | Lost 0-2 | -181597 |
| 3standard | 848 | Iwata, Ryoji (1381) | Lost 1-2 | -221575 |
| top | average opponent: 1514record: 1-2 | new rating: 1575 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1628 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 6 | Goto, Yoshimasa (1446) | Won 2-1 | +151643 |
| 2legacy | 307 | Kurita, Yudai (1614) | Won 2-0 | +171660 |
| 3legacy | 131 | Imai, Yoshihisa (1458) | Lost 1-2 | -221638 |
| 4legacy | 314 | Ozaki, Kei (1487) | Lost 0-2 | -201618 |
| 5legacy | 517 | Tanaka, Satosi (1512) | Lost 1-2 | -201598 |
| top | average opponent: 1503record: 2-3 | new rating: 1598 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1639 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 427 | Asada, Takashi (1500) | Won 2-0 | +161655 |
| 2standard | 177 | Ii, Tatsuya (1517) | Lost 0-2 | -211634 |
| 3standard | 805 | Makino, Takashi (1505) | Lost 1-2 | -201614 |
| 4standard | 1059 | Kanda, Akihiro (1388) | Won 2-0 | +141628 |
| top | average opponent: 1477record: 2-2 | new rating: 1628 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 25 | Takata, Takumi (1435) | Lost 1-2 | -191498 |
| 4legacy | 666 | Shiura, Takefumi (1417) | Won 2-1 | +161514 |
| 5legacy | 413 | Shirai, Shuto (1537) | Won 2-1 | +191533 |
| 6legacy | 179 | Nakanishi, Yutaka (1579) | Won 2-0 | +181551 |
| 7legacy | 68 | Sakate, Shunsuke (1421) | Lost 0-2 | -201531 |
| 8legacy | 292 | Furukawa, Shun1524 (1559) | Won 2-0 | +191550 |
| 9legacy | 193 | Higuchi, Yuma (1586) | Won 2-0 | +181568 |
| 10legacy | 67 | Sim, Daryl (1607) | Won 2-1 | +191587 |
| 11legacy | 83 | Inada, Ryuuma (1514) | Won 2-0 | +171604 |
| 12legacy | 15 | Iwasaki, Koichi (1536) | Lost 1-2 | -201584 |
| 13legacy | 75 | Yamakawa, Hiroaki (1589) | Won 2-0 | +181602 |
| 14legacy | 54 | Koshimura, Takeshi (1666) | Won 2-0 | +201622 |
| 15legacy | 36 | Mune, Kento (1609) | Won 2-0 | +171639 |
| top | average opponent: 1543record: 10-3 | new rating: 1639 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 134 | Tian, Kuang Kai (1568) | Lost 1-2 | -181531 |
| 4standard | 966 | Kikutani, Kou (1700) | Lost 0-2 | -141517 |
| 5standard | 1146 | Minezaki, Yuuta (1488) | Lost 1-2 | -191498 |
| 6standard | 1311 | Naka, Keiji (1557) | Won 2-0 | +191517 |
| top | average opponent: 1578record: 1-3 | new rating: 1517 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 143 | Fukuta, Shingo (1734) | Lost 0-2 | -151593 |
| 4sealed | 576 | Hosono, Yasuhisa (1515) | Lost 1-2 | -201573 |
| 5sealed | 871 | Horie, Yoshiaki (1364) | Won 2-1 | +151588 |
| 6sealed | 706 | Takeshita, Toru (1697) | Lost 0-2 | -161572 |
| 7sealed | 785 | Oosasa, Yuuto (1506) | Lost 0-2 | -201552 |
| 8sealed | 750 | Hirose, Yutaka (1325) | Won 2-0 | +141566 |
| 9sealed | 613 | Oikawa, Ryusuke (1610) | Lost 1-2 | -171549 |
| top | average opponent: 1536record: 2-5 | new rating: 1549 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 539 | Suzuki, Masahiro (1468) | Lost 0-2 | -211575 |
| 4standard | 354 | Takahata, Yuugo (1482) | Won 2-1 | +171592 |
| 5standard | 365 | Toyohara, Eisuke (1437) | Lost 1-2 | -211571 |
| 6standard | 620 | Kudou, Takunori (1491) | Lost 0-2 | -201551 |
| 7standard | 669 | Matsushima, Yuki (1586) | Won 2-1 | +191570 |
| 8standard | 483 | Tsujimoto, Hideki (1703) | Won 2-0 | +201590 |
| 9standard | 376 | U, Kashin (1600) | Won 2-0 | +181608 |
| top | average opponent: 1538record: 4-3 | new rating: 1608 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1614 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 208 | Poh, Liang Choong (1612) | Won 2-1 | +181632 |
| 4sealed | 69 | Yamaguchi, Satoshi (1851) | Lost 0-2 | -141618 |
| 5sealed | 216 | Kawabata, Shou2933 (1553) | Won 2-0 | +161634 |
| 6sealed | 71 | Fukasawa, Shinya (1541) | Lost 1-2 | -191615 |
| 7sealed | 203 | Asanuma, Hodaka (1548) | Lost 0-2 | -191596 |
| top | average opponent: 1621record: 2-3 | new rating: 1596 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 56 | Okubo, Mai (1582) | Won 1-0 | +201538 |
| 4legacy | 11 | Kudou, Shintarou (1551) | Won 2-1 | +181556 |
| 5legacy | 47 | Oosawa, Syo (1539) | Won 2-0 | +171573 |
| 6legacy | 9 | Mukuno, Yuuji (1768) | Won 2-1 | +221595 |
| 7legacy | 6 | Ine, Ryosuke (1619) | Won 2-0 | +181613 |
| 8legacy | 5 | Harane, Kenta (1792) | Lost 0-2 | -141599 |
| 9legacy | 17 | Moriya, Jun (1859) | Draw 1-1 | +41603 |
| 10legacy | 33 | Okada, Wataru (1701) | Lost 0-1 | -161587 |
| 11legacy | 71 | Robb, Justin (1763) | Won 2-0 | +211608 |
| 12legacy | 46 | Kamata, Kazuhiro (1593) | Lost 1-2 | -181590 |
| 13legacy | 66 | Hohaus, Daniel (1585) | Won 2-1 | +181608 |
| 14legacy | 50 | Naganawa, Yuuki (1684) | Lost 0-2 | -171591 |
| 15legacy | 66 | Matsui, Hisataka (1839) | Won 2-1 | +231614 |
| top | average opponent: 1683record: 8-4-1 | new rating: 1614 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 664 | Kase, Tomoki (1500) | Lost 1-2 | -181526 |
| 2sealed | 908 | Oku, Kousuke (1343) | Won 2-0 | +141540 |
| 3sealed | 945 | Sato, Tomoharu (1446) | Won 2-0 | +171557 |
| 4sealed | 917 | Takeda, Natsuki (1469) | Won 2-0 | +161573 |
| 5sealed | 804 | Tsuchiya, Hideaki (1689) | Lost 1-2 | -161557 |
| 6sealed | 882 | Kobori, Tetsuya (1563) | Won 2-1 | +181575 |
| 7sealed | 764 | Nishihara, Hideyuki (1540) | Lost 0-2 | -181557 |
| 8sealed | 769 | Nakae, Kazusi (1412) | Lost 1-2 | -211536 |
| 9sealed | 783 | Tomomura, Hitoshi (1556) | Lost 1-2 | -181518 |
| top | average opponent: 1502record: 4-5 | new rating: 1518 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 726 | Iwabuchi, Sou (1483) | Won 2-1 | +171522 |
| 2modern | 833 | Maruno, Takaaki (1518) | Draw 1-1 | 01522 |
| 3modern | 922 | Nomoto, Kazuma (1518) | Won 2-0 | +181540 |
| 4modern | 815 | Yamamoto, Akimasa (1889) | Lost 0-2 | -121528 |
| 5modern | 927 | Saegusa, Nobuyuki (1477) | Won 2-1 | +171545 |
| 6modern | 847 | Ashizawa, Yoshisato (1579) | Won 2-0 | +191564 |
| 7modern | 789 | Habata, Yousuke (1555) | Won 2-0 | +181582 |
| 8modern | 752 | Hasegawa, Shun-ya (1520) | Lost 0-2 | -191563 |
| 9modern | 805 | Rokugawa, Youhei (1551) | Lost 1-2 | -191544 |
| top | average opponent: 1565record: 5-3-1 | new rating: 1544 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 635 | Tsukano, Shinji (1500) | Won 2-0 | +181520 |
| 2sealed | 689 | Nakashima, Toshihiko (1641) | Draw 1-1 | +21522 |
| 3sealed | 680 | Tomimatsu, Yosihumi (1517) | Won 2-0 | +181540 |
| 4sealed | 609 | Yoshida, Akihiko (1537) | Lost 0-2 | -181522 |
| 5sealed | 688 | Watanabe, Ryuji (1558) | Lost 0-2 | -171505 |
| top | average opponent: 1551record: 2-2-1 | new rating: 1505 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 718 | Yamaguchi, Tetsuya (1575) | Lost 1-2 | -171477 |
| 5sealed | 803 | Takahashi, Mikito (1518) | Lost 1-2 | -171460 |
| 6sealed | 855 | Sonobe, Keishi (1566) | Won 2-1 | +201480 |
| 7sealed | 830 | Muraoka, Hideaki (1548) | Won 2-1 | +191499 |
| 8sealed | 974 | Kamada, Masahiro (1590) | Won 2-0 | +201519 |
| 9sealed | 895 | Kaneko, Junpei (1589) | Lost 0-2 | -171502 |
| top | average opponent: 1564record: 3-3 | new rating: 1502 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 54 | Furukawa, Kouki (1500) | Lost 1-2 | -181464 |
| 2standard | 500 | Yoshida, Mitsutaka (1198) | Won 2-0 | +141478 |
| 3standard | 624 | Nagaike, Ryotaro (1500) | Won 2-1 | +181496 |
| 4standard | 338 | Honma, Rie (1504) | Won 2-1 | +181514 |
| 5standard | 362 | Matsubara, Hitoshi (1538) | Won 2-0 | +191533 |
| 6standard | 76 | Tsunemoto, Makoto (1440) | Lost 1-2 | -201513 |
| 7standard | 205 | Kinoda, Yasuhiro (1491) | Lost 1-2 | -181495 |
| 8standard | 357 | Taya, Kentaro (1515) | Lost 0-2 | -181477 |
| 9standard | 299 | Nishiwaki, Yousuke (1415) | Won 2-1 | +171494 |
| top | average opponent: 1456record: 5-4 | new rating: 1494 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 225 | Kawahara, Yuki (1500) | Lost 0-2 | -181482 |
| 2modern | 635 | Endo, Susumu (1482) | Lost 0-2 | -181464 |
| 3modern | 666 | Akama, Kazuya (1466) | Won 2-1 | +181482 |
| top | average opponent: 1483record: 1-2 | new rating: 1482 | ||