Watanabe, Kouhei 8114
Current rating: 1686
Record: 43-35-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1642 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 268 | Kobayashi, Atsumu (1542) | Won 2-0 | +161658 |
| 4pioneer | 179 | Hibino, Yasutaka (1706) | Lost 1-2 | -171641 |
| 5pioneer | 174 | Tanigawa, Futa (1580) | Lost 0-2 | -191622 |
| 6pioneer | 354 | Fan, Kuangching (1521) | Won 2-0 | +161638 |
| 7pioneer | 281 | Kojima, Tatuya (1757) | Won 2-0 | +201658 |
| 8pioneer | 110 | Yamada, Masashi (1672) | Won 2-0 | +181676 |
| 9pioneer | 81 | Matsumura, Asuka (1559) | Won 2-0 | +161692 |
| 10pioneer | 37 | Hayashi, Shinsuke (1874) | Lost 1-2 | -141678 |
| 11pioneer | 123 | Yamada, Junki (1682) | Lost 0-2 | -181660 |
| 12pioneer | 135 | Noguchi, Masahiko (1501) | Lost 0-2 | -211639 |
| 13pioneer | 138 | Iizuka, Hirofumi (1500) | Won 2-0 | +151654 |
| 14pioneer | 101 | Leung, Victor (1540) | Won 2-0 | +161670 |
| 15pioneer | 103 | Kitagawa, Yusuke (1553) | Won 2-0 | +161686 |
| top | average opponent: 1614record: 8-5 | new rating: 1686 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 116 | Ono, Ikumi (1445) | Won 2-0 | +151592 |
| 4standard | 52 | Saito, Shinya (1934) | Lost 0-2 | -121580 |
| 5standard | 283 | Watanabe, Kyohei (1650) | Won 2-1 | +201600 |
| 6standard | 89 | Tokuda, Taihei (1544) | Won 2-0 | +171617 |
| 7standard | 63 | Sasao, Yusuke (1721) | Lost 1-2 | -171600 |
| 8standard | 142 | Seike, Makoto (1604) | Won 2-0 | +191619 |
| 9standard | 150 | Seo, Hiroki (1605) | Won 2-1 | +171636 |
| 10standard | 110 | Uemoto, Takahiro (1745) | Won 2-0 | +201656 |
| 11standard | 64 | Ito, Akihiko (1616) | Won 2-1 | +181674 |
| 12standard | 22 | Kosaka, Kazune (1835) | Lost 1-2 | -161658 |
| 13standard | 63 | Tsutsui, Yuki (1845) | Lost 1-2 | -141644 |
| 14standard | 57 | Ishikawa, Kenji (1573) | Lost 0-2 | -191625 |
| 15standard | 90 | Saito, Shogo (1592) | Won 2-0 | +171642 |
| top | average opponent: 1670record: 8-5 | new rating: 1642 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 75 | Takeda, Teruhisa (1524) | Won 2-1 | +181538 |
| 4sealed | 30 | Ueki, Yoshinori (1617) | Won 2-0 | +201558 |
| 5sealed | 34 | Tanimoto, Yusaku (1868) | Won 2-1 | +231581 |
| 6sealed | 44 | Han, Bing (1986) | Lost 0-2 | -111570 |
| 7sealed | 117 | Iwazaki, Masahiko (1541) | Won 2-1 | +181588 |
| 8sealed | 102 | Iso, Toshiharu (1589) | Won 2-0 | +181606 |
| 9sealed | 52 | Takakura, Shinichirou (1528) | Lost 0-2 | -201586 |
| 10draft | 12 | Saito, Shinya (1923) | Lost 1-2 | -121574 |
| 11draft | 12 | Hamada, Yuusai (1557) | Won 2-0 | +181592 |
| 12draft | 12 | Fukudome, Yuu (1736) | Won 2-0 | +201612 |
| 13draft | 150 | Itoh, Akira2497 (1596) | Lost 1-2 | -181594 |
| 14draft | 91 | Nishimura, Takashi 6132 (1627) | Lost 0-2 | -171577 |
| top | average opponent: 1674record: 7-5 | new rating: 1577 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 69 | Nakamura, Kouki 3727 (1497) | Won 2-1 | +181541 |
| 4modern | 167 | Asano, Kurenai (1482) | Lost 1-2 | -191522 |
| 5modern | 475 | Kusakawa, Naoto (1391) | Won 2-0 | +151537 |
| 6modern | 131 | Watanabe, Toru (1559) | Won 2-1 | +191556 |
| 7modern | 177 | Matsubara, Shintaro (1604) | Lost 0-2 | -181538 |
| 8modern | 144 | Nakamura, Kazuhiro (1520) | Lost 0-2 | -181520 |
| top | average opponent: 1509record: 3-3 | new rating: 1520 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 538 | Ohara, Yuki (1519) | Lost 0-2 | -191563 |
| 3standard | 1001 | Munakata, Shohei (1500) | Won 2-1 | +171580 |
| 4standard | 680 | Watanabe, Kouhei 7696 (1520) | Lost 1-2 | -201560 |
| 5standard | 359 | Adachi, Kenta (1539) | Lost 1-2 | -181542 |
| 6standard | 333 | Ikeda, Kazuya (1489) | Lost 1-2 | -191523 |
| top | average opponent: 1513record: 1-4 | new rating: 1523 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 371 | Horiuchi, Makoto (1787) | Won 2-0 | +221557 |
| 4standard | 293 | Miyagi, Moto (1713) | Lost 1-2 | -151542 |
| 5standard | 343 | Konagai, Ryota (1534) | Won 2-0 | +181560 |
| 6standard | 251 | Unnno, Tomohiro (1499) | Won 2-1 | +171577 |
| 7standard | 317 | Yamamura, Yuma (1732) | Won 2-0 | +211598 |
| 8standard | 238 | Hotta, Shingo (1625) | Won 2-0 | +181616 |
| 9standard | 32 | Jiang, Yiren (1810) | Draw 1-1 | +41620 |
| 10standard | 32 | Wataya, Yosuke (1583) | Lost 1-2 | -191601 |
| 11standard | 74 | Yoshida, Yutarou (1533) | Won 2-0 | +171618 |
| 12standard | 46 | Kashiwa, Tomohiro (1621) | Lost 0-2 | -181600 |
| 13standard | 81 | Nakamura, Kouki 3727 (1540) | Won 2-0 | +171617 |
| 14standard | 53 | Masuda, Masahito (1570) | Lost 0-2 | -191598 |
| 15standard | 78 | Tagawa, Naoki (1700) | Lost 1-2 | -161582 |
| top | average opponent: 1635record: 7-5-1 | new rating: 1582 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 91 | Hozuki, Atsushi (1552) | Won 2-0 | +191539 |
| 4legacy | 80 | Sochurek, Petr (2069) | Won 2-0 | +261565 |
| 5legacy | 56 | Nishiura, Ryosuke (1782) | Won 2-1 | +221587 |
| 6legacy | 16 | Shoji, Tatsuro (1715) | Lost 1-2 | -151572 |
| 7legacy | 57 | Tanaka, Hayato (1518) | Lost 1-2 | -191553 |
| 8legacy | 117 | Niwa, Ryuuta (1567) | Lost 1-2 | -181535 |
| top | average opponent: 1701record: 3-3 | new rating: 1535 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 383 | Kanayama, Haruki (1554) | Lost 0-2 | -171501 |
| 4sealed | 699 | Sugiyama, Syun (1551) | Won 2-0 | +191520 |
| top | average opponent: 1552record: 1-1 | new rating: 1520 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 556 | Knudson, Andrew (1500) | Lost 0-2 | -181482 |
| 2legacy | 578 | Takahashi, Takaya (1483) | Lost 1-2 | -181464 |
| 3legacy | 1118 | Tanano, Takayuki (1394) | Won 2-0 | +171481 |
| 4legacy | 1072 | Hattori, Kazuki (1638) | Won 2-1 | +211502 |
| 5legacy | 649 | Shimura, Takeshi (1370) | Won 2-1 | +151517 |
| 6legacy | 634 | Kojima, Daiki (1670) | Won 2-0 | +211538 |
| 7legacy | 247 | Hayashi, Takatomo (1495) | Lost 0-2 | -191519 |
| 8legacy | 451 | Futagi, Yuki (1527) | Lost 0-2 | -181501 |
| 9legacy | 612 | Sasaki, Shin (1449) | Won 2-1 | +171518 |
| top | average opponent: 1503record: 5-4 | new rating: 1518 | ||