Yamamoto, Kouhei2453
Current rating: 1693
Record: 52-36
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1715 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Kanno, Akihito (1500) | Won 2-1 | +151730 |
| 2sealed | 71 | Kitaoka, Hikaru (1517) | Lost 1-2 | -221708 |
| 3sealed | 928 | Handa, Takuya (1553) | Won 2-1 | +151723 |
| 4sealed | 416 | Kawamoto, Ryouhei (1390) | Won 2-0 | +121735 |
| 5sealed | 278 | Kazuki, Muto (1541) | Lost 1-2 | -211714 |
| 6sealed | 436 | Sugimori, Daisuke (1565) | Lost 0-2 | -211693 |
| top | average opponent: 1511record: 3-3 | new rating: 1693 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1725 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 491 | Trachoo, Chatchapol (1547) | Won 2-1 | +151740 |
| 4sealed | 7 | Asaumi, Hiroki (1645) | Won 2-1 | +161756 |
| 5sealed | 66 | Matsui, Yasuo (1791) | Lost 1-2 | -171739 |
| 6sealed | 305 | Ishikami, Naotaka (1694) | Lost 0-2 | -191720 |
| 7sealed | 250 | Wu, Yanfei (1572) | Won 2-0 | +151735 |
| 8sealed | 242 | Kyo, Ifu (1622) | Lost 1-2 | -201715 |
| top | average opponent: 1645record: 3-3 | new rating: 1715 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1756 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 9 | Chiu, Po Hsien (1580) | Won 2-0 | +151771 |
| 4standard | 108 | Lee, Chao Yi (1658) | Won 2-0 | +161787 |
| 5standard | 46 | Tanji, Kensuke (1575) | Lost 1-2 | -221765 |
| 6standard | 50 | Young, San (1592) | Won 2-0 | +151780 |
| 7standard | 25 | Harane, Kenta (1877) | Lost 0-2 | -161764 |
| 8standard | 98 | Miyazono, Takeshi (1745) | Lost 1-2 | -191745 |
| 9standard | 131 | Singh, Devsharan (1624) | Lost 1-2 | -201725 |
| top | average opponent: 1665record: 3-4 | new rating: 1725 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1665 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 387 | Kitazawa, Kentarou (1597) | Lost 0-2 | -191646 |
| 4standard | 616 | Igeta, Hirofumi (1512) | Won 2-0 | +151661 |
| 5standard | 433 | Iwata, Sho (1449) | Won 2-1 | +151676 |
| 6standard | 179 | Mishina, Ryota (1538) | Won 2-1 | +151691 |
| 7standard | 180 | Saruta, Katsumi (1564) | Lost 0-2 | -201671 |
| 8standard | 267 | Takenori, Ohsaki (1561) | Won 2-0 | +161687 |
| 9standard | 191 | Hirano, Aimi (1580) | Won 2-0 | +161703 |
| 10standard | 125 | Ryusuke, Kobayashi (1648) | Won 2-0 | +171720 |
| 11standard | 94 | Omori, Wataru (1566) | Lost 1-2 | -211699 |
| 12standard | 137 | Ding, Yi (1705) | Won 2-0 | +181717 |
| 13standard | 59 | Ohno, Isao (1756) | Won 2-0 | +191736 |
| 14standard | 39 | Saito, Hirotsugu (1863) | Won 2-1 | +201756 |
| 15standard | 47 | Ootsuka, Koutarou (1909) | ID | 01756 |
| top | average opponent: 1634record: 9-3-1 | new rating: 1756 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1627 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 446 | Li, Sean (1601) | Won 2-0 | +181645 |
| 4sealed | 219 | Nakae, Kazusi (1476) | Won 2-1 | +151660 |
| 5sealed | 69 | Kakumae, Teruya (1810) | Lost 0-2 | -161644 |
| 6sealed | 206 | Sakai, Shigeto (1484) | Lost 0-2 | -201624 |
| 7sealed | 334 | Morotome, Ken (1537) | Won 2-0 | +161640 |
| 8sealed | 317 | Konishi, Yoshimi (1405) | Won 2-0 | +141654 |
| 9sealed | 223 | Hiraoka, Shigenori (1560) | Won 2-0 | +161670 |
| 10draft | 312 | Sano, Keisuke (1494) | Won 2-0 | +151685 |
| 11draft | 108 | Yow, Jonathan (1649) | Won 2-0 | +171702 |
| 12draft | 352 | Innes-Taylor, Ian (1601) | Lost 1-2 | -201682 |
| 13draft | 216 | Nakai, Sunao (1725) | Lost 1-2 | -171665 |
| top | average opponent: 1577record: 7-4 | new rating: 1665 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1667 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 291 | Yajima, Tatsuaki (1698) | Lost 1-2 | -181649 |
| 4standard | 486 | Takahi, Akihiro (1516) | Won 2-0 | +161665 |
| 5standard | 477 | Okada, Yoshikazu (1613) | Lost 1-2 | -191646 |
| 6standard | 447 | Wang, Arthur (1610) | Lost 1-2 | -191627 |
| top | average opponent: 1609record: 1-3 | new rating: 1627 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1709 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 865 | Takashima, Hiroto (1538) | Lost 0-2 | -211688 |
| 4sealed | 937 | Dai, Kentaro (1516) | Won 2-1 | +151703 |
| 5sealed | 901 | Tsuchiya, Hideaki (1839) | Won 2-1 | +201723 |
| 6sealed | 938 | Irie, Shun (1500) | Won 2-0 | +141737 |
| 7sealed | 874 | Terawaki, Koji (1555) | Won 2-0 | +151752 |
| 8sealed | 841 | Shinagawa, Kazunari (1599) | Won 2-0 | +151767 |
| 9sealed | 807 | Miwa, Ryou (1608) | Lost 1-2 | -211746 |
| 10draft | 121 | Ishigami, Kenji (1591) | Lost 1-2 | -201726 |
| 11draft | 95 | Shimamura, Riku (1576) | Lost 1-2 | -211705 |
| 13draft | 19 | Baba, Yasunori (1788) | Lost 1-2 | -171688 |
| 14draft | 53 | Yamada, Masato1566 (1485) | Lost 0-2 | -211667 |
| top | average opponent: 1599record: 5-6 | new rating: 1667 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1721 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 144 | Okada, Takuya (1696) | Won 2-0 | +171738 |
| 4legacy | 13 | Hashizume, Yuuya (1625) | Won 2-0 | +161754 |
| 5legacy | 35 | Kaneko, Yasuki (1569) | Won 2-0 | +151769 |
| 6legacy | 28 | Nuruki, Hiroaki (1788) | Lost 1-2 | -181751 |
| 7legacy | 17 | Morishita, Mizuki (1646) | Lost 1-2 | -201731 |
| 8legacy | 56 | Ishitsuka, Hiroyuki (1485) | Lost 1-2 | -221709 |
| top | average opponent: 1635record: 3-3 | new rating: 1709 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 98 | Yamamoto, Yuusuke7856 (1536) | Won 2-0 | +171606 |
| 4sealed | 85 | Kurihara, Tomo (1582) | Won 2-0 | +171623 |
| 5sealed | 9 | Takagi, Takeshi (1741) | Won 2-0 | +201643 |
| 6sealed | 24 | Furukawa, Hiroki (1730) | Lost 0-2 | -161627 |
| 7sealed | 29 | Huang, Han Shen (1655) | Won 2-0 | +181645 |
| 8sealed | 24 | Nuruki, Hiroaki (1691) | Won 2-1 | +191664 |
| 9sealed | 13 | Aoki, Shougo (1601) | Won 2-0 | +171681 |
| 10draft | 12 | Koyanagi, Takashi (1663) | Won 2-1 | +181699 |
| 11draft | 44 | Nakano, Tatsuhito (1629) | Lost 1-2 | -201679 |
| 12draft | 37 | Kawakami, Kazuto (1808) | Lost 1-2 | -151664 |
| 13draft | 110 | Nakashima, Hajime (1825) | Won 2-0 | +211685 |
| 14draft | 3 | Hasegawa, Gaku (1711) | Won 2-0 | +181703 |
| 15draft | 12 | Hasegawa, Shun-ya (1684) | Won 2-0 | +181721 |
| top | average opponent: 1681record: 10-3 | new rating: 1721 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 69 | Irie, Shun (1459) | Won 2-1 | +171517 |
| 4modern | 84 | Masuda, Ryou (1537) | Won 2-1 | +191536 |
| 5modern | 22 | Yasooka, Shota (2074) | Won 2-1 | +271563 |
| 6modern | 65 | Nakamura, Masato2133 (1579) | Lost 0-2 | -181545 |
| 7modern | 114 | Inoue, Shinta (1685) | Won 2-1 | +201565 |
| 8modern | 73 | Arita, Kento (1720) | Won 2-0 | +211586 |
| 9modern | 64 | Kinoshita, Tomohiro (1749) | Won 2-0 | +211607 |
| 10modern | 12 | Akaboshi, Yuki (1632) | Lost 0-2 | -171590 |
| 11modern | 41 | Nakamura, Masato2133 (1604) | Won 2-1 | +181608 |
| 12modern | 30 | Endo, Kenji (1576) | Lost 0-2 | -191589 |
| 13modern | 47 | Tani, Chiharu (1522) | Lost 1-2 | -191570 |
| 14modern | 72 | Itou, Manabu (1598) | Won 2-1 | +191589 |
| 15modern | 45 | Tsai, Kai-an (1660) | ID | 01589 |
| top | average opponent: 1646record: 8-4-1 | new rating: 1589 | ||