Koyama, Yuji
Current rating: 1740 (#4313)
Record: 104-71-4
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1751 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 207 | Tanaka, Shinichi 0666 (1519) | Won 2-1 | +141765 |
| 3pioneer | 111 | Okuda, Masateru (1559) | Won 2-1 | +141779 |
| 4pioneer | 105 | Hannuki, Yuya (1578) | Lost 1-2 | -221757 |
| 5pioneer | 115 | Kanayama, Haruki (1429) | Won 2-1 | +121769 |
| 6pioneer | 214 | Kobayashi, Yosuke (1640) | Won 2-0 | +161785 |
| 7pioneer | 51 | Ohshima, Hironori (1540) | Lost 1-2 | -221763 |
| 8pioneer | 179 | Higuchi, Yasuhiro (1520) | Lost 1-2 | -231740 |
| top | average opponent: 1541record: 4-3 | new rating: 1740 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1805 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 19 | Ito, Akihiko (1518) | Won 2-1 | +131818 |
| 3standard | 203 | Maeba, Hideaki (1845) | Lost 0-2 | -181800 |
| 4standard | 389 | Yonemura, Tomomi (1374) | Lost 0-2 | -251775 |
| 5standard | 671 | Yoshizawa, Kaoru (1408) | Lost 0-2 | -241751 |
| top | average opponent: 1536record: 1-3 | new rating: 1751 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1708 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 135 | Fujii, Kohei (1556) | Lost 1-2 | -201688 |
| 3modern | 573 | Shimura, Takeshi (1280) | Won 2-0 | +101698 |
| 4modern | 682 | Sun, Bolong (1456) | Lost 0-2 | -221676 |
| 5modern | 916 | Wachigai, Hirotaka (1378) | Won 2-1 | +131689 |
| 6modern | 684 | Oku, Daisaku (1540) | Won 2-0 | +151704 |
| 7modern | 317 | Wakita, Daiki (1476) | Won 2-1 | +141718 |
| 8modern | 183 | Kimura, Shigeki (1665) | Won 2-1 | +171735 |
| 9modern | 206 | Yuda, Yukihiro (1554) | Won 2-0 | +151750 |
| 10modern | 116 | Kasagawa, Yosuke (1538) | Won 2-1 | +141764 |
| 11modern | 66 | Kuroda, Yoshirou (1597) | Lost 0-2 | -211743 |
| 12modern | 96 | Sawai, Fuka (1541) | Won 2-0 | +141757 |
| 13modern | 91 | Tominaga, Yoshiaki (1608) | Won 2-0 | +161773 |
| 14modern | 29 | Iwabuchi, Daisuke (1581) | Won 2-0 | +141787 |
| 15modern | 39 | Yamamoto, Masafumi (1774) | Won 2-0 | +181805 |
| top | average opponent: 1539record: 11-3 | new rating: 1805 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1764 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 214 | Fujii, Kento (1426) | Lost 1-2 | -241740 |
| 3standard | 507 | Nabeshima, Kennosuke (1497) | Won 2-1 | +131753 |
| 4standard | 381 | Gao, Yi (1477) | Lost 0-2 | -231730 |
| 5standard | 570 | Shibayama, Takuya (1500) | Lost 1-2 | -221708 |
| top | average opponent: 1475record: 1-3 | new rating: 1708 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1814 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 408 | Fujimaki, Satoshi (1552) | Lost 1-2 | -231791 |
| 3sealed | 630 | Nakata, Tomoya (1463) | Lost 1-2 | -231768 |
| 4sealed | 893 | Zhang, Yin (1703) | Won 2-0 | +161784 |
| 5sealed | 711 | Maeda, Dai (1476) | Won 2-0 | +131797 |
| 6sealed | 572 | Kozaki, Yosuke (1543) | Lost 0-2 | -231774 |
| 7sealed | 524 | Kawata, Kazuki (1465) | Lost 1-2 | -231751 |
| 8sealed | 565 | Ito, Sho (1447) | Won 2-1 | +131764 |
| top | average opponent: 1521record: 3-4 | new rating: 1764 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1865 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 47 | Katsutoshi, Miyata (1447) | Won 2-0 | +111876 |
| 3sealed | 197 | Ganz, Andreas (1789) | Draw 1-1 | -21874 |
| 4sealed | 314 | Utsunomiya, Takumi (1650) | Won 2-0 | +141888 |
| 5sealed | 159 | Yamada, Ryuichiro (1785) | Lost 0-2 | -201868 |
| 6sealed | 365 | Abe, Masahide (1430) | Won 2-1 | +111879 |
| 7sealed | 221 | Delavy, Theophile (1783) | Won 2-0 | +161895 |
| 8sealed | 129 | Martell, Tom (1807) | Lost 0-2 | -201875 |
| 9sealed | 260 | Goshima, Akito (1864) | Won 2-0 | +181893 |
| 10draft | 343 | Hiromasa, Ryuusuke (1691) | Lost 1-2 | -221871 |
| 11draft | 305 | Matsushita, Masakazu (1633) | Lost 1-2 | -221849 |
| 12draft | 190 | Ito, Keigo (1628) | Won 2-0 | +141863 |
| 13draft | 139 | Date, Tsutomu (1520) | Lost 0-2 | -241839 |
| 14draft | 121 | Yamagishi, Hideaki (1422) | Lost 0-2 | -251814 |
| top | average opponent: 1650record: 6-6-1 | new rating: 1814 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1754 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 188 | Hirota, Wataru (1537) | Draw 1-1 | -41750 |
| 4standard | 358 | Izumiya, Yoshiaki (1539) | Lost 1-2 | -221728 |
| 5standard | 626 | Wu, Darrell (1490) | Won 2-1 | +141742 |
| 6standard | 413 | Fukuda, Ryoma (1506) | Won 2-1 | +141756 |
| 7standard | 246 | Tanaka, Takahiro (1489) | Won 2-1 | +131769 |
| 8standard | 147 | Takenaka, Yuuhi (1743) | Lost 1-2 | -191750 |
| 9standard | 296 | Hara, Katsuaki (1512) | Won 2-0 | +141764 |
| 10standard | 180 | Hickling, Adam (1532) | Won 2-0 | +141778 |
| 11standard | 119 | Chiba, Takato (1654) | Won 2-1 | +161794 |
| 12standard | 72 | Tezuka, Yo (1906) | Won 2-1 | +201814 |
| 13standard | 45 | Fukazawa, Yuuki (1644) | Won 2-1 | +151829 |
| 14standard | 26 | Horiuchi, Makoto (1898) | Won 2-1 | +191848 |
| 15standard | 16 | Iwase, Akira (1790) | Won 2-1 | +171865 |
| top | average opponent: 1634record: 10-2-1 | new rating: 1865 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1780 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 37 | Takahashi, Kei (1569) | Won 2-0 | +141794 |
| 4legacy | 147 | Jinbo, Takashi (1522) | Won 2-1 | +131807 |
| 5legacy | 101 | Ozaki, Keita (1536) | Lost 0-2 | -231784 |
| 6legacy | 146 | Maeda, Tatsuyuki (1559) | Lost 1-2 | -221762 |
| 7legacy | 264 | Koike, Katsutoshi (1477) | Won 2-0 | +131775 |
| 8legacy | 184 | Murata, Shunya (1599) | Won 2-0 | +151790 |
| 9legacy | 85 | Nagae, Nobuyasu (1502) | Lost 1-2 | -231767 |
| 10legacy | 338 | Yokoyama, Kenichi (1436) | Won 2-0 | +121779 |
| 11legacy | 194 | Hashimoto, Hashi (1577) | Won 2-1 | +141793 |
| 12legacy | 130 | Vorel, Andrew (1714) | Lost 1-2 | -191774 |
| 13legacy | 197 | Katou, Takayoshi (1644) | Won 2-0 | +161790 |
| 14legacy | 118 | McNeace, Shawn (2018) | Lost 1-2 | -141776 |
| 15legacy | 156 | Nakai, Tomoki (1555) | Lost 0-2 | -221754 |
| top | average opponent: 1593record: 7-6 | new rating: 1754 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1708 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 376 | Suzuki, Gou (1518) | Lost 1-2 | -211687 |
| 3standard | 1226 | Kojima, Shou (1480) | Won 2-0 | +141701 |
| 4standard | 941 | Nishi, Yuutarou (1466) | Lost 1-2 | -221679 |
| 5standard | 1234 | Hashimoto, Arata (1524) | Won 2-1 | +151694 |
| 6standard | 640 | Hayashi, Kazuya (1546) | Won 2-0 | +151709 |
| 7standard | 371 | Komori, Yuuya (1466) | Won 2-0 | +141723 |
| 8standard | 235 | Habata, Issei (1624) | Lost 0-2 | -201703 |
| 9standard | 509 | Shinohara, Yuusaku (1481) | Won 2-1 | +141717 |
| 10standard | 410 | Hasebe, Shunichi (1479) | Won 2-0 | +141731 |
| 11standard | 246 | Esaki, Keisuke (1720) | Won 2-0 | +181749 |
| 12standard | 144 | Tanaka, Shinichi (1843) | Lost 1-2 | -171732 |
| 13standard | 250 | Matsubara, Takeyuki (1617) | Won 2-1 | +161748 |
| 14standard | 123 | Suzuki, Junpei (1627) | Won 2-0 | +161764 |
| 15standard | 138 | Kumagai, Masahiro (1627) | Won 2-0 | +161780 |
| top | average opponent: 1573record: 10-4 | new rating: 1780 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1700 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 479 | Kumagai, Masahiro (1518) | Won 2-0 | +151715 |
| 3standard | 86 | Moriyama, Yuu (1495) | Lost 0-2 | -221693 |
| 4standard | 574 | Miyawaki, Yusuke (1487) | Lost 1-2 | -221671 |
| 5standard | 690 | Okabayashi, Masanao (1499) | Won 2-0 | +151686 |
| 6standard | 621 | Arai, Ikki (1365) | Won 2-0 | +131699 |
| 7standard | 240 | Kozaki, Yosuke (1607) | Lost 1-2 | -201679 |
| 8standard | 400 | Alvarez, Paolo Lorenzo (1471) | Won 2-0 | +141693 |
| 9standard | 295 | Kutsuna, Yohei (1524) | Won 2-0 | +151708 |
| top | average opponent: 1496record: 5-3 | new rating: 1708 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 2193 | Fujikura, Reon (1500) | Won 2-0 | +161628 |
| 4sealed | 2076 | Takenaga, Tomohiro (1673) | Won 2-1 | +191647 |
| 5sealed | 2026 | Sano, Yuuki (1561) | Won 2-1 | +171664 |
| 6sealed | 2020 | Rikitake, Tatsuya (1553) | Won 2-0 | +161680 |
| 7sealed | 2003 | Miyamoto, Hiroya (1680) | Won 2-0 | +181698 |
| 8sealed | 2003 | Satou, Akihiko (1607) | Won 2-0 | +161714 |
| 9sealed | 2002 | Matsumoto, Fumiya (1877) | Lost 1-2 | -151699 |
| 10draft | 85 | Shimada, Tetsuhiro (1633) | Won 2-0 | +171716 |
| 11draft | 11 | Kariya, Kazuki (1686) | Lost 1-2 | -191697 |
| 12draft | 141 | Ogata, Nobuhiko (1624) | Won 2-1 | +171714 |
| 13draft | 175 | Miyamoto, Hiroya (1713) | Won 2-1 | +181732 |
| 14draft | 25 | Takano, Masaki (1780) | Lost 0-2 | -171715 |
| 15draft | 21 | Saeki, Katsuhisa (1921) | Lost 0-2 | -151700 |
| top | average opponent: 1677record: 9-4 | new rating: 1700 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 586 | Nagai, Satoshi (1450) | Won 2-1 | +161600 |
| 2legacy | 664 | Kakinuma, Shouta (1482) | Won 2-0 | +161616 |
| 3legacy | 525 | Masukado, Kenta (1631) | Won 2-1 | +181634 |
| 4legacy | 557 | Fujino, Masashi (1524) | Draw 1-1 | -21632 |
| 5legacy | 555 | Osa, Tomoki (1624) | Won 2-1 | +181650 |
| 6legacy | 528 | Inamari, Jin (1536) | Lost 0-2 | -201630 |
| 7legacy | 578 | Takahashi, Osamu (1575) | Won 2-0 | +171647 |
| 8legacy | 550 | Hosokawa, Yuya (1703) | Lost 1-2 | -171630 |
| 9legacy | 594 | Liang, Mo (1659) | Lost 1-2 | -181612 |
| top | average opponent: 1576record: 5-3-1 | new rating: 1612 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 803 | Ando, Takaya (1466) | Lost 1-2 | -201566 |
| 3modern | 1030 | Sakabe, Yuji (1501) | Won 2-0 | +161582 |
| 4modern | 963 | Takamiya, Raku (1516) | Won 2-0 | +171599 |
| 5modern | 859 | Wada, Hiroya (1708) | Lost 1-2 | -161583 |
| 6modern | 898 | Kudo, Issei (1516) | Won 2-1 | +171600 |
| 7modern | 907 | Kihara, Ryou (1790) | Won 2-0 | +211621 |
| 8modern | 776 | Yutani, Mitsuhiro (1557) | Lost 1-2 | -191602 |
| 9modern | 823 | Furusato, Hiroshi (1611) | Lost 0-2 | -181584 |
| top | average opponent: 1583record: 4-4 | new rating: 1584 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 722 | Hayashi, Junki (1557) | Won 2-1 | +191551 |
| 2sealed | 623 | Hattori, Takesi (1524) | Won 2-0 | +171568 |
| 3sealed | 544 | Arai, Yoshimi (1533) | Won 2-0 | +181586 |
| 4sealed | 599 | Nakaigawa, Takeshi (1514) | Won 2-1 | +161602 |
| 5sealed | 511 | Onodera, Yuuji (1519) | Lost 0-2 | -191583 |
| 6sealed | 578 | Ikumi, Syun (1554) | Won 2-0 | +171600 |
| 7sealed | 567 | Tsuruoka, Shouta (1661) | Won 2-1 | +191619 |
| 8sealed | 536 | Tsuchiya, Hideaki (1779) | Lost 0-2 | -151604 |
| 9sealed | 551 | Tomomura, Hitoshi (1571) | Lost 0-2 | -181586 |
| top | average opponent: 1579record: 6-3 | new rating: 1586 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 110 | Shiomi, Mitsuo (1500) | Lost 1-2 | -201551 |
| 2standard | 309 | Matsushita, Takayuki (1501) | Won 2-0 | +171568 |
| 3standard | 323 | Higa, Masatoshi (1506) | Lost 0-2 | -191549 |
| 4standard | 533 | Fujimoto, Takehiro (1611) | Lost 1-2 | -171532 |
| top | average opponent: 1529record: 1-3 | new rating: 1532 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1633 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 43 | Nishizawa, Taichi (1482) | Lost 0-2 | -211612 |
| 2standard | 619 | Yagi, Wataru (1436) | Lost 1-2 | -211591 |
| 3standard | 740 | Yamamoto, Satoshi (1458) | Lost 1-2 | -201571 |
| top | average opponent: 1459record: 0-3 | new rating: 1571 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1637 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 185 | Tanaka, Akira (1518) | Draw 1-1 | -21635 |
| 4sealed | 148 | Chi, Tatsuya (1601) | Won 2-1 | +171652 |
| 5sealed | 72 | Shigehara, Toshinori (1720) | Won 2-0 | +191671 |
| 6sealed | 39 | Yamamoto, Shouhei (1786) | Lost 1-2 | -161655 |
| 7sealed | 99 | Kawaguchi, Kyouhei (1593) | Lost 0-2 | -191636 |
| 8sealed | 165 | Tatsurou I., (1542) | Lost 1-2 | -191617 |
| 9sealed | 171 | Arakawa, Hiroki (1522) | Won 2-0 | +161633 |
| top | average opponent: 1612record: 3-3-1 | new rating: 1633 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 118 | Matsumura, Takehiko (1479) | Won 2-0 | +171569 |
| 2standard | 103 | Hiroki N., (1518) | Lost 1-2 | -191550 |
| 3standard | 192 | Hassaku, Jinpei (1667) | Won 2-0 | +201570 |
| 4standard | 138 | Kozaki, Yosuke (1518) | Lost 0-2 | -191551 |
| 5standard | 193 | Nishimoto, Takuya (1490) | Won 2-1 | +171568 |
| 6standard | 224 | Awaya, Yuuki (1518) | Won 2-0 | +171585 |
| 7standard | 132 | Hayashi, Shouya (1627) | Won 2-0 | +191604 |
| 8standard | 67 | Yoshida, Keisuke (1556) | Won 2-0 | +171621 |
| 9standard | 79 | Tada, Hidenobu (1554) | Won 2-0 | +171638 |
| 10standard | 27 | Itou, Tomoya (1576) | Won 2-1 | +171655 |
| 11standard | 14 | Senba, Kotaro (1683) | Lost 0-2 | -181637 |
| 12standard | 35 | Terada, Shuuhei (1558) | Lost 0-2 | -191618 |
| 13standard | 43 | Takao, Shota (1718) | Won 2-1 | +191637 |
| 14standard | 38 | Sasaki, Yuusuke (1644) | Lost 1-2 | -171620 |
| 15standard | 44 | Satou, Takashi (1581) | Won 2-0 | +171637 |
| top | average opponent: 1579record: 10-5 | new rating: 1637 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 52 | Murakami, Yuuki (Miyagi) (1804) | Won 2-0 | +231511 |
| 2extended | 164 | H., Noriyuki (1500) | Won 2-0 | +181529 |
| 3extended | 48 | Iwasaki, Akira (1491) | Won 2-0 | +171546 |
| 4extended | 69 | Komuro, Shuu (1763) | Lost 0-2 | -141532 |
| 5extended | 69 | Taniguchi, Hiroaki (1578) | Won 2-0 | +191551 |
| 6extended | 65 | Hiramatsu, Mamoru (1555) | Won 2-1 | +181569 |
| 7extended | 48 | Hirose, Daichi (1423) | Won 2-0 | +161585 |
| 8extended | 17 | Natsume, Takuya (1508) | Lost 0-2 | -201565 |
| 9extended | 51 | Ino, Kentaro (1844) | Lost 0-2 | -131552 |
| top | average opponent: 1607record: 6-3 | new rating: 1552 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 165 | Serizawa, Yuuki (1500) | Lost 0-2 | -181482 |
| 2extended | 434 | Yamakawa, Naoya (1481) | Won 2-1 | +181500 |
| 3extended | 297 | Takahashi, Youichi (1464) | Lost 0-2 | -191481 |
| 4extended | 384 | Takai, Keiichirou (1480) | Won 2-1 | +181499 |
| 5extended | 282 | Fujita, Osamu (1867) | Lost 1-2 | -111488 |
| top | average opponent: 1558record: 2-3 | new rating: 1488 | ||