Hirata, Koutatsu
Current rating: 1695
Record: 78-64-1
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
| Grand Prix Yokohama 2019 (modern) | starting rating: 1736 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 775 | Kurihara, Naoya (1520) | Lost 1-2 | -221714 |
| 2modern | 790 | Sevcik, Lukas (1476) | Won 2-1 | +141728 |
| 3modern | 789 | Hirama, Takanori (1399) | Won 2-1 | +121740 |
| 4modern | 620 | Tezuka, Takatomo (1473) | Lost 1-2 | -231717 |
| 5modern | 807 | Nakayama, Hiroki (1494) | Lost 0-2 | -221695 |
| top | average opponent: 1472record: 2-3 | new rating: 1695 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1744 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 694 | Seki, Keita (1719) | Lost 0-2 | -191725 |
| 2sealed | 930 | Makuta, Eiji (1453) | Won 2-0 | +131738 |
| 3sealed | 864 | Torigoe, Yoshihisa (1499) | Won 2-0 | +141752 |
| 4sealed | 706 | Ebitani, Keisuke (1743) | Won 2-0 | +181770 |
| 5sealed | 199 | Nohara, Hiromitsu (1474) | Lost 0-2 | -231747 |
| 6sealed | 569 | Tanaka, Mami (1310) | Won 2-0 | +101757 |
| 7sealed | 433 | Fujioka, Naoya (1572) | Lost 0-2 | -211736 |
| top | average opponent: 1539record: 4-3 | new rating: 1736 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 555 | Takahashi, Haruki 9522 (1500) | Won 2-1 | +151659 |
| 3modern | 248 | Satou, Takahisa (1442) | Lost 0-2 | -221637 |
| 4modern | 559 | Hayashi, Naoki (1613) | Won 2-1 | +181655 |
| 5modern | 438 | Koizumi, Yuma (1691) | Lost 0-2 | -171638 |
| 6modern | 749 | Hung, Hsun Hao (1674) | Won 2-0 | +181656 |
| 7modern | 437 | Kung, Lam Yan (1575) | Won 2-1 | +171673 |
| 8modern | 342 | Asai, Kyosuke (1557) | Won 2-1 | +161689 |
| 9modern | 198 | Hori, Masataka (1735) | Won 2-1 | +191708 |
| 10modern | 102 | Sakamoto, Sakito (1863) | Lost 0-2 | -161692 |
| 11modern | 288 | Shibata, Hirotaka (1664) | Won 2-1 | +181710 |
| 12modern | 95 | Aihara, Shogaku (1665) | Won 2-1 | +171727 |
| 13modern | 61 | Tanaka, Masataka (1580) | Won 2-1 | +151742 |
| 14modern | 40 | Suematsu, Takaaki (1969) | Lost 0-2 | -141728 |
| 15modern | 79 | Muto, Shogo (1570) | Won 2-0 | +161744 |
| top | average opponent: 1650record: 10-4 | new rating: 1744 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1618 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 47 | Hayaki, Tomohiro (1500) | Won 2-0 | +161634 |
| 2standard | 74 | Itazu, Boram (1391) | Lost 0-2 | -221612 |
| 3standard | 1113 | Oda, Bumpei (1533) | Lost 0-2 | -201592 |
| 4standard | 1045 | Ozaki, Naoto (1419) | Won 2-1 | +151607 |
| 5standard | 831 | Konno, Tomoyuki (1486) | Won 2-0 | +161623 |
| 6standard | 610 | Yosiura, Hirotosi (1610) | Won 2-0 | +181641 |
| 7standard | 294 | Fujii, Mikiya (1490) | Lost 1-2 | -211620 |
| 8standard | 521 | Kaneko, Hiroki (1488) | Won 2-1 | +161636 |
| 9standard | 494 | Uesugi, Fumiya (1553) | Won 2-0 | +161652 |
| 10standard | 348 | Habu, Yoshiaki (1546) | Won 2-0 | +161668 |
| 11standard | 291 | Suzuki, Shinya (1617) | Won 2-0 | +171685 |
| 12standard | 156 | Kishihara, Nobuaki (1586) | Lost 1-2 | -201665 |
| 13standard | 238 | Takei, Tomoyuki (1477) | Lost 0-2 | -211644 |
| top | average opponent: 1515record: 8-5 | new rating: 1644 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1618 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 457 | Matsumoto, Ryohei (1455) | Won 2-0 | +151633 |
| 2legacy | 13 | Gondo, Kosuke (1564) | Won 2-1 | +171650 |
| 3legacy | 461 | Mitome, Hiroumi (1502) | Lost 0-2 | -211629 |
| 4legacy | 741 | Matsushige, Masataka (1517) | Won 2-1 | +161645 |
| 5legacy | 349 | Soejima, Naoki (1542) | Lost 0-2 | -191626 |
| 6legacy | 554 | Yoshizawa, Masaru (1653) | Lost 1-2 | -181608 |
| 7legacy | 680 | Kamioka, Masayuki (1555) | Won 2-1 | +171625 |
| 8legacy | 581 | Nagao, Shouji (1518) | Won 2-1 | +161641 |
| 9legacy | 379 | Tsukimata, Kimitoshi (1561) | Won 2-0 | +171658 |
| 10legacy | 325 | Touma, Norihiro (1563) | Lost 1-2 | -201638 |
| 11legacy | 273 | Edmunds, James (1538) | Lost 0-2 | -201618 |
| top | average opponent: 1543record: 6-5 | new rating: 1618 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1631 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 512 | Yamashita, Takahiro (1534) | Lost 1-2 | -201611 |
| 4standard | 529 | Mita, Shin'ichiro (1538) | Won 2-1 | +171628 |
| 5standard | 450 | Shigehisa, Tetsuya (1530) | Won 2-1 | +161644 |
| 6standard | 416 | Kasuga, Ryou (Nagano) (1523) | Won 2-1 | +161660 |
| 7standard | 161 | Lim, David (1575) | Lost 1-2 | -191641 |
| 8standard | 372 | Oomori, Takumi (1505) | Won 2-1 | +151656 |
| 9standard | 137 | Takahashi, Ryo (Mie) (1578) | Lost 1-2 | -191637 |
| 10standard | 366 | Fukui, Shunsuke (1810) | Won 2-0 | +211658 |
| 11standard | 173 | Takao, Akinao (1631) | Lost 0-2 | -191639 |
| 12standard | 357 | Uraya, Masamitsu (1474) | Lost 0-2 | -211618 |
| top | average opponent: 1570record: 5-5 | new rating: 1618 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 77 | Anan, Kazuyoshi (1659) | Won 2-1 | +191619 |
| 4sealed | 249 | Ebitani, Keisuke (1793) | Won 2-0 | +211640 |
| 5sealed | 92 | Hirami, Tomonori (1726) | Lost 0-2 | -171623 |
| 6sealed | 81 | Harada, Sosuke (1527) | Won 2-0 | +171640 |
| 7sealed | 135 | Obitsu, Youtarou (1625) | Won 2-1 | +171657 |
| 8sealed | 79 | Naide, Kazutaka (1541) | Lost 0-2 | -201637 |
| 9sealed | 84 | Shiozu, Ryouma (1797) | Won 2-1 | +211658 |
| 10draft | 268 | Watanabe, Yuuya (1951) | Lost 1-2 | -131645 |
| 11draft | 243 | Huang, Yu Chung (1768) | Lost 1-2 | -151630 |
| 12draft | 336 | Hattori, Taiki (1808) | Won 2-0 | +211651 |
| 13draft | 226 | Choi, Jaekyoo (1561) | Lost 0-2 | -201631 |
| top | average opponent: 1705record: 6-5 | new rating: 1631 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 348 | Tsukagoshi, Tadaki (1787) | Lost 0-2 | -151588 |
| 4standard | 467 | Koike, Takumi (1411) | Won 2-0 | +151603 |
| 5standard | 190 | Yamada, Nobuhiro (1379) | Won 2-0 | +141617 |
| 6standard | 307 | Ikawa, Yoshihiko (1906) | Won 2-0 | +231640 |
| 7standard | 62 | Tsuda, Tomohiro (1542) | Lost 0-2 | -191621 |
| 8standard | 220 | Hayashi, Takatomo (1459) | Lost 1-2 | -211600 |
| top | average opponent: 1580record: 3-3 | new rating: 1600 | ||
| Grand Prix Shanghai 2015 (DTK standard) | starting rating: 1642 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 39 | Xu, Cong (1535) | Lost 0-2 | -201622 |
| 4standard | 250 | Pavese, Marco (1554) | Lost 0-2 | -191603 |
| top | average opponent: 1544record: 0-2 | new rating: 1603 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 538 | Sasao, Yusuke (1500) | Lost 0-2 | -191519 |
| 4legacy | 642 | Sakamoto, Naoki (1417) | Won 2-0 | +161535 |
| 5legacy | 658 | Matsuo, Yoshiyuki (1640) | Won 2-0 | +201555 |
| 6legacy | 545 | Sun, Bo (1938) | Won 2-0 | +251580 |
| 7legacy | 559 | Tozuka, Kouta (1691) | Lost 0-2 | -161564 |
| 8legacy | 621 | Terada, Shuuhei (1754) | Won 2-0 | +211585 |
| 9legacy | 569 | Kitahara, Hiroaki (1894) | Won 2-1 | +231608 |
| 10legacy | 36 | Nomura, Tsuyoshi (1646) | Lost 1-2 | -171591 |
| 11legacy | 84 | Kawabata, Yuji (1560) | Won 2-1 | +181609 |
| 12legacy | 58 | Fukunaga, Keisuke (1606) | Won 2-1 | +181627 |
| 13legacy | 62 | Kamioka, Masayuki (1613) | Lost 0-2 | -191608 |
| 14legacy | 60 | Funabiki, Yuusuke (1576) | Won 2-1 | +181626 |
| 15legacy | 61 | Ishitsuka, Hiroyuki (1552) | Won 2-0 | +161642 |
| top | average opponent: 1645record: 9-4 | new rating: 1642 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 767 | Yoshida, Satoshi (1579) | Lost 0-2 | -181576 |
| 4sealed | 732 | Hirooka, Toshiki (1562) | Lost 1-2 | -191557 |
| 5sealed | 983 | Watanabe, Takefumi (1456) | Lost 0-2 | -191538 |
| top | average opponent: 1532record: 0-3 | new rating: 1538 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 826 | Matsushita, Takahiro (1516) | Lost 1-2 | -191563 |
| 4modern | 889 | Ohkura, Ryota (1522) | Won 2-1 | +171580 |
| 5modern | 919 | Suzuki, Shoya (1535) | Won 2-0 | +171597 |
| 6modern | 781 | Nakamoto, Ryuuta (1674) | Lost 1-2 | -161581 |
| 7modern | 891 | Tashiro, Atsunori (1463) | Won 2-1 | +161597 |
| 8modern | 777 | Kawaguchi, Tetsu (1503) | Lost 0-2 | -201577 |
| 9modern | 856 | Mori, Yusei (1520) | Won 2-1 | +171594 |
| top | average opponent: 1533record: 4-3 | new rating: 1594 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 63 | Yaocheng, Mark (1606) | Won 2-1 | +181580 |
| 4sealed | 56 | Li, Maxwell (1640) | Lost 0-2 | -171563 |
| 5sealed | 159 | Hasegawa, Takahiro (1533) | Won 2-0 | +181581 |
| 6sealed | 72 | Mcmillin, Sarah (1552) | Won 2-0 | +171598 |
| 7sealed | 52 | Ishiyama, Takahiro (1538) | Lost 1-2 | -191579 |
| 8sealed | 117 | Jeong, Ki Myoung (1777) | Won 2-0 | +221601 |
| 9sealed | 57 | Shimizu, Yusuke (1563) | Lost 1-2 | -191582 |
| top | average opponent: 1601record: 4-3 | new rating: 1582 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 116 | Hamaguchi, Masakuni (1404) | Lost 0-2 | -191449 |
| 4standard | 160 | Horie, Youhei (1468) | Won 2-1 | +181467 |
| 5standard | 126 | Sonobe, Keishi (1578) | Won 2-1 | +201487 |
| 6standard | 98 | Sonohara, Takashi (1490) | Won 2-0 | +181505 |
| 7standard | 54 | Yamaguchi, Satoshi (1915) | Draw 1-1 | +71512 |
| 8standard | 46 | Igarashi, Yasunori (1567) | Won 2-0 | +191531 |
| 9standard | 169 | Chiba, Akio (1887) | Won 2-0 | +251556 |
| 10standard | 28 | Choi, Seung-Muk (1581) | Won 2-0 | +181574 |
| 11standard | 15 | Saitou, Ippei (1685) | Won 2-0 | +201594 |
| 12standard | 9 | Kobayashi, Kazuto (1698) | Lost 1-2 | -161578 |
| 13standard | 27 | Ou, Kaitou (1603) | Lost 0-2 | -181560 |
| 14standard | 45 | Taki, Yoshikazu (1505) | Lost 1-2 | -191541 |
| 15standard | 66 | Nagai, Mamoru (1660) | Won 2-0 | +211562 |
| top | average opponent: 1619record: 8-4-1 | new rating: 1562 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 12 | Sakaki, Yusuke (1516) | Won 2-0 | +181517 |
| 3standard | 66 | Asakura, Yoshitomo (1592) | Lost 0-2 | -171500 |
| 4standard | 344 | Shimizu, Naoto (1521) | Won 2-0 | +191519 |
| 5standard | 157 | Muto, Masaharu (1637) | Lost 1-2 | -161503 |
| 6standard | 221 | Sakai, Toshinori (1566) | Lost 1-2 | -171486 |
| 7standard | 299 | Tanigaki, Toshiyuki (1494) | Lost 1-2 | -181468 |
| top | average opponent: 1554record: 2-4 | new rating: 1468 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1022 | Ariga, Kazuma (1374) | Won 2-0 | +171462 |
| 2sealed | 906 | Matsubara, Tohru (1558) | Won 2-0 | +201482 |
| 3sealed | 791 | Skinstad, Erik (1569) | Won 2-0 | +191501 |
| 4sealed | 726 | Kim, Min-su (Japan) (1960) | Won 2-0 | +261527 |
| 5sealed | 661 | Murase, Hiroshi (1851) | Lost 0-2 | -121515 |
| 6sealed | 741 | Tanigaki, Toshiyuki (1528) | Won 2-1 | +181533 |
| 7sealed | 715 | Hirayama, Teruaki (1572) | Lost 0-2 | -171516 |
| 8sealed | 929 | Morita, Takanori (1562) | Lost 1-2 | -171499 |
| top | average opponent: 1622record: 5-3 | new rating: 1499 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 26 | Shimazu, Yoshiki (1500) | Lost 1-2 | -171463 |
| 2standard | 528 | Matsumoto, Masaya (1482) | Lost 0-2 | -181445 |
| 3standard | 707 | Mizuguchi, Jun (1430) | Lost 0-2 | -181427 |
| 4standard | 769 | Noritake, Kuniaki (1450) | Won 2-1 | +181445 |
| top | average opponent: 1465record: 1-3 | new rating: 1445 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 224 | Ichikawa, Hiroshi (1461) | Won 2-0 | +171517 |
| 2modern | 359 | Hayashi, Masatake (1482) | Lost 0-2 | -181499 |
| 3modern | 481 | Oshima, Yuki (1482) | Lost 1-2 | -191480 |
| top | average opponent: 1475record: 1-2 | new rating: 1480 | ||