Ehara, Kouta
Current rating: 1635
Record: 55-44-1
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1624 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 37 | Nakajima, Shunichi (1529) | Lost 0-2 | -201604 |
| 2standard | 69 | Yakushi, Hideki (1601) | Won 2-0 | +181622 |
| 3standard | 49 | Ohta, Shun (1559) | Won 2-0 | +171639 |
| 4standard | 16 | Izumi, Kento (1539) | Lost 1-2 | -201619 |
| 5standard | 33 | Yamamura, Shouma (1499) | Lost 1-2 | -201599 |
| 6standard | 54 | Nagai, Mamoru (1747) | Won 2-0 | +201619 |
| 7standard | 40 | Kanayama, Haruki (1472) | Won 2-1 | +161635 |
| top | average opponent: 1564record: 4-3 | new rating: 1635 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 339 | Katayama, Satoru (1536) | Won 2-0 | +171604 |
| 3pioneer | 47 | Mikami, Akihiro (1636) | Won 2-0 | +191623 |
| 4pioneer | 97 | Kyogoku, Kyosuke (1734) | Lost 0-2 | -161607 |
| 5pioneer | 210 | Matsuzaki, Eiji (1468) | Won 2-0 | +151622 |
| 6pioneer | 146 | Takahashi, Jun (1737) | Lost 0-2 | -161606 |
| 7pioneer | 307 | Nakamura, Yusuke9351 (1466) | Won 2-0 | +161622 |
| 8pioneer | 101 | Nishizawa, Yasuhide (1673) | Won 2-0 | +191641 |
| 9pioneer | 170 | Takaoka, Yusuke (1503) | Lost 1-2 | -211620 |
| 10pioneer | 141 | Karasawa, Ryuichi (1822) | Won 2-0 | +221642 |
| 11pioneer | 106 | Kanegawa, Toshiya (1747) | Lost 1-2 | -161626 |
| 12pioneer | 123 | Nagao, Kengo (1888) | Lost 1-2 | -131613 |
| 13pioneer | 127 | Kinoshita, Akira (1442) | Lost 1-2 | -221591 |
| 14pioneer | 132 | Kawai, Kentaro (1357) | Won 2-0 | +141605 |
| 15pioneer | 117 | Harada, Ryoichi (1627) | Won 2-0 | +191624 |
| top | average opponent: 1617record: 8-6 | new rating: 1624 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 54 | Miyamoto, Naoki (1462) | Won 2-0 | +161588 |
| 3standard | 253 | Fujiya, Takahiro (1601) | Lost 0-2 | -181570 |
| 4standard | 427 | Arai, Kenichiro (1703) | Won 2-0 | +211591 |
| 5standard | 298 | Kondo, Shohei (1598) | Won 2-1 | +181609 |
| 6standard | 185 | Yagura, Ryota (1649) | Lost 1-2 | -181591 |
| 7standard | 330 | Furukawa, Syun6268 (1414) | Won 2-1 | +151606 |
| 8standard | 163 | Tokuda, Taihei (1550) | Lost 0-2 | -191587 |
| top | average opponent: 1568record: 4-3 | new rating: 1587 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 482 | Yoshihara, Shinji (1376) | Lost 0-2 | -221578 |
| 3sealed | 716 | Suyama, Sou (1498) | Won 2-0 | +171595 |
| 4sealed | 481 | Hasegawa, Kazuhiko3707 (1535) | Lost 1-2 | -201575 |
| 5sealed | 642 | Kang, Jian (1569) | Won 2-1 | +181593 |
| 6sealed | 470 | Kusakawa, Naoto (1403) | Lost 0-2 | -211572 |
| top | average opponent: 1476record: 2-3 | new rating: 1572 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 585 | Nakajima, Masato (1452) | Lost 0-2 | -201567 |
| 3modern | 762 | Kanamoto, Shojun (1430) | Won 2-0 | +161583 |
| 4modern | 461 | Kinbara, Shinnosuke (1487) | Won 2-0 | +161599 |
| 5modern | 244 | Tanaka, Ryuuma (1500) | Won 2-1 | +161615 |
| 6modern | 169 | Matumoto, Yoshitaka (1688) | Won 2-0 | +191634 |
| 7modern | 167 | Ma, Noah (1812) | Lost 1-2 | -141620 |
| 8modern | 180 | Sakurai, Kensuke (1532) | Lost 1-2 | -201600 |
| top | average opponent: 1557record: 4-3 | new rating: 1600 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 45 | Sawada, Taku (1518) | Won 2-0 | +161611 |
| 3standard | 461 | Doi, Yuuta (1480) | Lost 0-2 | -201591 |
| 4standard | 343 | Aizawa, Tamotsu (1487) | Lost 1-2 | -201571 |
| 5standard | 750 | Kawada, Hiroyuki (1286) | Won 2-1 | +131584 |
| 6standard | 335 | Yasuda, Seita (1695) | Won 2-0 | +201604 |
| 7standard | 214 | Sung, Bok Tung (1689) | Lost 1-2 | -171587 |
| top | average opponent: 1526record: 3-3 | new rating: 1587 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 212 | Kitagawa, Hiroaki (1512) | Won 2-0 | +171611 |
| 3standard | 458 | Tomiyama, Katsuhiko (1536) | Won 2-0 | +161627 |
| 4standard | 281 | Nam, Sung Wook (1888) | Won 2-1 | +231650 |
| 5standard | 231 | Asai, Takamichi (1536) | Won 2-0 | +161666 |
| 6standard | 224 | Yamamura, Yuma (1751) | Won 2-1 | +191685 |
| 7standard | 192 | Tanahashi, Masayasu (1869) | Lost 1-2 | -141671 |
| 8standard | 261 | Ma, Noah (1734) | Lost 1-2 | -171654 |
| 9standard | 133 | Hara, Wataru (1618) | Lost 1-2 | -191635 |
| 10standard | 151 | Fujii, Yuusaku (1430) | Won 2-0 | +151650 |
| 11standard | 84 | Hashigaya, Wataru (1601) | Won 2-1 | +171667 |
| 12standard | 94 | Okuyama, Sanshirou (1484) | Lost 1-2 | -221645 |
| 13standard | 86 | Tabei, Hirotomo (1544) | Lost 0-2 | -191626 |
| 14standard | 118 | Kawaguchi, Tetsu (1744) | Lost 1-2 | -161610 |
| 15standard | 120 | Hirayama, Shigetaka (1775) | Lost 1-2 | -151595 |
| top | average opponent: 1644record: 7-7 | new rating: 1595 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1674 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 523 | Obata, Ken (1531) | Lost 1-2 | -211653 |
| 3sealed | 525 | Yin, Hao (1585) | Lost 1-2 | -191634 |
| 4sealed | 1047 | Aoki, Shougo (1673) | Lost 1-2 | -171617 |
| 5sealed | 950 | Katou, Takeru (1362) | Lost 1-2 | -231594 |
| top | average opponent: 1538record: 0-4 | new rating: 1594 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1720 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 352 | Futada, Takahiro (1548) | Lost 1-2 | -211699 |
| 3sealed | 685 | Li, Jinyi (1486) | Won 2-0 | +141713 |
| 4sealed | 389 | Horibe, Satoshi (1535) | Lost 0-2 | -211692 |
| 5sealed | 595 | Suzuki, Junpei (1607) | Lost 0-2 | -201672 |
| 6sealed | 795 | Dorsey, Brooks (1619) | Won 2-1 | +171689 |
| 7sealed | 569 | Traarbach, Charly (1835) | Lost 0-2 | -151674 |
| top | average opponent: 1605record: 2-4 | new rating: 1674 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1626 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 232 | Agemura, Shota (1458) | Lost 1-2 | -211605 |
| 2modern | 654 | Suzuki, Futaro (1553) | Lost 0-2 | -191586 |
| 3modern | 1176 | Fujikawa, Takashi (1254) | Lost 1-2 | -231563 |
| 4modern | 1311 | Gyomu, Tsuanto (1445) | Won 2-0 | +151578 |
| 5modern | 1250 | Nishikawa, Satoshi (1304) | Won 2-0 | +141592 |
| 6modern | 965 | Iriki, Takumi (1496) | Won 2-1 | +161608 |
| 7modern | 717 | Sasaki, Hideya (1382) | Won 2-1 | +141622 |
| 8modern | 467 | Nishida, Masahiro (1519) | Won 2-1 | +161638 |
| 9modern | 320 | Uchiyama, Takato (1527) | Won 2-0 | +161654 |
| 10modern | 388 | Kudo, Koichi (1683) | Won 2-0 | +181672 |
| 11modern | 204 | Oginuma, Kiichi (1544) | Lost 0-2 | -201652 |
| 12modern | 258 | Yamanaka, Yuki (1533) | Won 2-1 | +161668 |
| 13modern | 202 | Ikeda, Yuuki (1603) | Won 2-0 | +171685 |
| 14modern | 151 | Fujita, Osamu (1727) | Won 2-1 | +181703 |
| 15modern | 129 | Asai, Kyosuke (1612) | Won 2-1 | +171720 |
| top | average opponent: 1509record: 11-4 | new rating: 1720 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 371 | Fujii, Mikiya (1449) | Won 2-0 | +171517 |
| 2standard | 113 | Kihara, Yasuyuki (1439) | Won 2-1 | +171534 |
| 3standard | 75 | Yu, Ching Kong (1614) | Won 2-1 | +191553 |
| 4standard | 245 | Takahashi, Osamu (1570) | Won 2-1 | +181571 |
| 5standard | 16 | Harane, Kenta (1942) | Won 2-1 | +251596 |
| 6standard | 46 | Arita, Kouichirou (1698) | Lost 0-2 | -161580 |
| 7standard | 213 | Tanabe, Tetsuya (1615) | Won 2-1 | +181598 |
| 8standard | 50 | Itazu, Yoshihisa (1496) | Won 2-1 | +171615 |
| 9standard | 61 | Nose, Shunsuke (1641) | Won 2-0 | +181633 |
| 10standard | 33 | Mimido, Ryuji (1581) | Lost 0-2 | -191614 |
| 11standard | 98 | Kobayashi, Atsumu (1686) | Won 2-0 | +191633 |
| 12standard | 34 | Horiuchi, Makoto (1890) | Draw 1-1 | +51638 |
| 13standard | 44 | Shimizu, Naoki (1838) | Lost 0-2 | -141624 |
| 14standard | 87 | Chiba, Takato (1675) | Won 2-0 | +191643 |
| 15standard | 56 | Okada, Naoya (1748) | Lost 1-2 | -171626 |
| top | average opponent: 1659record: 10-4-1 | new rating: 1626 | ||