Igarashi, Hisashi
Current rating: 1367
Record: 41-50-2
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 495 | Harada, Daisaku (1548) | Lost 1-2 | -151403 |
| 3sealed | 699 | Matsumoto, Kazuma 0580 (1603) | Lost 0-2 | -151388 |
| 4sealed | 965 | Isomura, Takuya (1472) | Won 2-1 | +201408 |
| 5sealed | 803 | Haritani, Ryosuke (1533) | Lost 1-2 | -161392 |
| 6sealed | 874 | Suwansrikham, Parinya (1403) | Won 2-1 | +181410 |
| 7sealed | 607 | Moure, Matteo (1775) | Lost 1-2 | -111399 |
| 8sealed | 759 | Wang, Fei (1536) | Lost 1-2 | -161383 |
| 9sealed | 642 | Noguchi, Masayoshi (1518) | Lost 0-2 | -161367 |
| top | average opponent: 1548record: 2-6 | new rating: 1367 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 410 | Fukunaga, Nao (1564) | Lost 0-2 | -161424 |
| 3modern | 735 | Oda, Ryutaro (1501) | Won 2-1 | +201444 |
| 4modern | 812 | Yamada, Kazuki (1701) | Won 2-0 | +221466 |
| 5modern | 497 | Ueta, Kazuaki (1520) | Lost 0-2 | -171449 |
| 6modern | 832 | Hokumura, Tatsuro (1514) | Lost 1-2 | -171432 |
| 7modern | 684 | Yamaguchi, Takumi (1500) | Won 2-0 | +201452 |
| 8modern | 575 | Katou, Masaya (1509) | Lost 0-2 | -171435 |
| 9modern | 724 | Sogo, Eiji (1513) | Lost 1-2 | -171418 |
| top | average opponent: 1540record: 3-5 | new rating: 1418 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 548 | Inagaki, Yukihiro (1617) | Won 2-0 | +211480 |
| 3standard | 94 | Ebitani, Keisuke (1833) | Lost 0-2 | -121468 |
| 4standard | 678 | Naitou, Takashi (1702) | Lost 1-2 | -141454 |
| 5standard | 916 | Gokan, Yuta (1472) | Lost 1-2 | -181436 |
| 6standard | 889 | Kawamoto, Ryouhei (1358) | Won 2-0 | +171453 |
| 7standard | 929 | Seno, Takuto (1515) | Lost 1-2 | -171436 |
| 8standard | 805 | Urata, Jun (1480) | Won 2-1 | +191455 |
| 9standard | 623 | Kamoi, Ryo (1636) | Lost 1-2 | -151440 |
| top | average opponent: 1577record: 3-5 | new rating: 1440 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 299 | Komuro, Masashi (1518) | Won 2-1 | +181509 |
| 3legacy | 190 | Hato, Ryo (1534) | Lost 0-2 | -181491 |
| 4legacy | 410 | Takamura, Kazuki (1434) | Lost 1-2 | -191472 |
| 5legacy | 817 | Freedman, Henry (1790) | Lost 1-2 | -121460 |
| 6legacy | 861 | Hirano, Takeshi (1435) | Won 2-0 | +181478 |
| 7legacy | 599 | Saitou, Yuusuke (1498) | Lost 0-2 | -181460 |
| 8legacy | 795 | Ito, Hiroto (1479) | Won 2-0 | +181478 |
| 9legacy | 554 | Kubota, Hirofumi (1392) | Lost 1-2 | -191459 |
| top | average opponent: 1510record: 3-5 | new rating: 1459 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 80 | Tada, Mitsuhiro (1548) | Won 2-0 | +181540 |
| 4standard | 194 | Healy, Brendan (1585) | Draw 1-1 | +11541 |
| 5standard | 180 | Hara, Yusuke (1732) | Lost 0-2 | -141527 |
| 6standard | 471 | Yamaguchi, Satoru (1536) | Lost 1-2 | -181509 |
| 7standard | 705 | Usami, Hirotaka (1567) | Won 2-0 | +191528 |
| 8standard | 519 | Minoshima, Daijiro (1447) | Lost 1-2 | -201508 |
| 9standard | 693 | Yuda, Yukihiro (1518) | Lost 1-2 | -171491 |
| top | average opponent: 1562record: 2-4-1 | new rating: 1491 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 397 | Noda, Akihiro (1391) | Lost 0-2 | -211527 |
| 3sealed | 623 | Funahashi, Shun (1544) | Lost 0-2 | -171510 |
| 4sealed | 1024 | Togashi, Yuji (1477) | Lost 1-2 | -191491 |
| 5sealed | 1066 | Fukuki, Akito (1464) | Draw 1-1 | 01491 |
| 6sealed | 1030 | Cole, Lewis (1410) | Won 2-1 | +161507 |
| 7sealed | 868 | Matsuda, Atsushi (1486) | Lost 0-2 | -181489 |
| 8sealed | 795 | Endo, Takuya7968 (1420) | Won 2-0 | +161505 |
| 9sealed | 652 | Fusegi, Takanori (1420) | Won 2-0 | +171522 |
| top | average opponent: 1451record: 3-4-1 | new rating: 1522 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 2132 | Sato, Yuki4833 (1500) | Lost 1-2 | -211611 |
| 3sealed | 2272 | Uotsu, Atsushi (1403) | Lost 1-2 | -221589 |
| 4sealed | 2336 | Tanabe, Kyohei (1461) | Won 2-0 | +161605 |
| 5sealed | 2308 | Goshima, Akito (1563) | Lost 1-2 | -191586 |
| 6sealed | 2305 | Ogawa, Gou (1402) | Won 2-0 | +151601 |
| 7sealed | 2231 | Motoi, Kenichi (1506) | Lost 0-2 | -201581 |
| 8sealed | 2174 | Lim, Shaun (1661) | Lost 1-2 | -161565 |
| 9sealed | 2139 | Motomura, Shigeru (1647) | Lost 0-2 | -171548 |
| top | average opponent: 1518record: 2-6 | new rating: 1548 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 43 | Kasamatsu, Ryoma (1516) | Won 2-0 | +161660 |
| 3legacy | 31 | Nakamura, Taiki (1456) | Won 2-0 | +141674 |
| 4legacy | 77 | Ueki, Junichi (1447) | Lost 0-2 | -221652 |
| 5legacy | 165 | Makoto, Mituduka (1533) | Lost 0-2 | -201632 |
| 6legacy | 169 | Inoue, Masanao (1563) | Won 2-0 | +171649 |
| 7legacy | 148 | Ichige, Masato (1654) | Lost 0-2 | -181631 |
| 8legacy | 162 | Mori, Takeshi (1574) | Won 2-0 | +171648 |
| 9legacy | 114 | Wada, Yuki (1738) | Lost 0-2 | -161632 |
| top | average opponent: 1560record: 4-4 | new rating: 1632 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 698 | Robertson, Chris (1500) | Lost 0-2 | -181501 |
| 2sealed | 939 | Naito, Yuuki (1378) | Won 2-0 | +151516 |
| 3sealed | 931 | Kobayashi, Masakatsu (1439) | Won 2-1 | +171533 |
| 4sealed | 742 | Tasugi, Keigo (1420) | Won 2-0 | +161549 |
| 5sealed | 789 | Endo, Yasushi (1504) | Lost 0-2 | -191530 |
| 6sealed | 822 | Furujou, Takashi (1420) | Won 2-1 | +161546 |
| 7sealed | 712 | Hibino, Yasutaka (1607) | Won 2-0 | +191565 |
| 8sealed | 670 | Inuzuka, Satoshi (1674) | Won 2-0 | +201585 |
| 9sealed | 659 | Maruyama, Yuichiro (1572) | Won 2-0 | +181603 |
| 10draft | 109 | Yamada, Ryuichiro (1691) | Lost 0-2 | -161587 |
| 11draft | 53 | Sugimoto, Yuuki (1611) | Lost 0-2 | -181569 |
| 12draft | 46 | Muranaka, Hiroya (1651) | Won 2-0 | +191588 |
| 13draft | 38 | Oh, Asato (1573) | Won 2-1 | +181606 |
| 14draft | 78 | Yanaseko, Kentarou (1643) | Won 2-1 | +191625 |
| 15draft | 69 | Hattori, Kazuki (1704) | Won 2-1 | +191644 |
| top | average opponent: 1559record: 11-4 | new rating: 1644 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 378 | Kobori, Tetsuya (1508) | Lost 0-2 | -181487 |
| 2sealed | 400 | Tomohiro, Yoshida (1411) | Won 2-0 | +171504 |
| 3sealed | 262 | Yoshida, Toshiaki (1480) | Won 2-0 | +171521 |
| 4sealed | 265 | Yoshimura, Naoto (1458) | Won 2-1 | +171538 |
| 5sealed | 66 | Nakamoto, Kosuke (1523) | Won 2-0 | +181556 |
| 6sealed | 40 | Kojima, Kazuaki (1563) | Lost 1-2 | -181538 |
| 7sealed | 215 | Takano, Hayato (1486) | Lost 0-2 | -191519 |
| top | average opponent: 1490record: 4-3 | new rating: 1519 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 289 | Oldziey, Kalim (1503) | Lost 0-2 | -181482 |
| 2modern | 482 | Yamaguchi, Yuuichi (1526) | Lost 1-2 | -171465 |
| 3modern | 697 | Hino, Tomoaki (1464) | Won 2-0 | +181483 |
| 4modern | 586 | Saito, Shohei (1464) | Lost 1-2 | -181465 |
| 5modern | 618 | Hashimoto, Yuu (1734) | Won 2-1 | +221487 |
| 6modern | 523 | Takai, Hiroaki (1469) | Lost 0-2 | -181469 |
| 7modern | 443 | Nakazono, Kouya (1578) | Won 2-1 | +201489 |
| 8modern | 354 | Ito, Akira (1382) | Won 2-0 | +161505 |
| top | average opponent: 1515record: 4-4 | new rating: 1505 | ||