Kidera, Seita
Current rating: 1718 (#5422)
Record: 63-44-1
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1697 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 332 | Hazu, Masaki (1506) | Won 2-0 | +141711 |
| 3standard | 26 | Yokota, Kazuya (1478) | Won 2-0 | +141725 |
| 4standard | 156 | Wu, Bilun (1569) | Won 2-1 | +151740 |
| 5standard | 67 | Lee, Wing Tat (1618) | Won 2-1 | +161756 |
| 6standard | 46 | Okita, Akito (1496) | Won 2-1 | +141770 |
| 7standard | 19 | Gondo, Kosuke (1632) | Won 2-1 | +151785 |
| 8standard | 5 | Ozawa, Takeshi (2031) | Lost 0-2 | -141771 |
| 9standard | 21 | He, Yue 8578 (1849) | Lost 0-2 | -161755 |
| 10standard | 86 | Yanase, Kaname (1744) | Lost 0-2 | -181737 |
| 11standard | 94 | Okai, Toshiki (1844) | Lost 1-2 | -161721 |
| 12standard | 127 | Takahashi, Jun (1760) | Won 2-1 | +181739 |
| 13standard | 100 | Uechi, Shintaro (1539) | Lost 1-2 | -211718 |
| top | average opponent: 1672record: 7-5 | new rating: 1718 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1749 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 376 | Uchida, Satoru (1559) | Won 2-1 | +151764 |
| 3sealed | 286 | Oshima, Yuki (1598) | Lost 1-2 | -211743 |
| 4sealed | 724 | Hayakawa, Sho (1493) | Lost 1-2 | -231720 |
| 5sealed | 546 | Sano, Masayo (1422) | Lost 0-2 | -231697 |
| top | average opponent: 1518record: 1-3 | new rating: 1697 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1724 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 429 | Suzuki, Issei (1503) | Won 2-0 | +141738 |
| 3standard | 60 | Ando, Masanori (1530) | Won 2-1 | +141752 |
| 4standard | 30 | Sakamoto, Aihei (1547) | Won 2-1 | +141766 |
| 5standard | 72 | Sasaki, Yusuke 1421 (1660) | Lost 1-2 | -201746 |
| 6standard | 248 | Noine, Kazuhiro (1763) | Lost 0-2 | -171729 |
| 7standard | 399 | Makino, Hiroyuki (1625) | Won 2-1 | +161745 |
| 8standard | 169 | Takahira, Shunsuke (1736) | Won 2-1 | +181763 |
| 9standard | 114 | Kai, Masatoshi (1483) | Won 2-0 | +131776 |
| 10standard | 131 | Shono, Takanari (1555) | Lost 1-2 | -221754 |
| 11standard | 163 | Motokawa, Takusa (1591) | Won 2-1 | +151769 |
| 12standard | 106 | Maruya, Takashi (1674) | Lost 1-2 | -201749 |
| top | average opponent: 1606record: 7-4 | new rating: 1749 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1738 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 658 | Matsumoto, Naoya (1535) | Won 2-1 | +141752 |
| 2standard | 247 | Shin, Cheol Min (1609) | Lost 1-2 | -211731 |
| 3standard | 769 | Okada, Keita (1377) | Won 2-0 | +121743 |
| 4standard | 458 | Nanjo, Masashi (1791) | Draw 1-1 | +11744 |
| 5standard | 599 | Bordenabe, Nicolas (1609) | Lost 0-2 | -201724 |
| top | average opponent: 1584record: 2-2-1 | new rating: 1724 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1695 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 320 | Yamaji, Shunichi (1576) | Lost 0-2 | -201675 |
| 2sealed | 762 | Nagase, Yoshinobu (1477) | Won 2-1 | +151690 |
| 3sealed | 797 | Soyama, Tomohiro (1500) | Won 2-0 | +141704 |
| 4sealed | 394 | Ji, Zihao (1756) | Lost 1-2 | -171687 |
| 5sealed | 872 | Ishikawa, Takuma 3754 (1581) | Won 2-1 | +161703 |
| 6sealed | 575 | Tanaka, Makoto1460 (1443) | Won 2-0 | +141717 |
| 7sealed | 479 | Nakashima, Shunichi (1582) | Won 2-0 | +151732 |
| 8sealed | 350 | Hiroi, Genki (1730) | Won 2-0 | +181750 |
| 9sealed | 152 | Sibata, Kouji (1632) | Lost 0-2 | -201730 |
| 10draft | 650 | Yoshida, Akinobu (1671) | Won 2-0 | +171747 |
| 11draft | 740 | Wada, Yasutaka (1621) | Won 2-1 | +161763 |
| 12draft | 712 | Nomura, Tsuyoshi (1704) | Lost 0-2 | -191744 |
| 13draft | 631 | Matsuyama, Ryousuke (1634) | Won 2-0 | +161760 |
| 14draft | 579 | Negishi, Haruki (1539) | Lost 0-2 | -221738 |
| top | average opponent: 1603record: 9-5 | new rating: 1738 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1741 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 612 | Shibata, Yuuya (1542) | Won 2-1 | +141755 |
| 2standard | 386 | Saitou, Ippei (1585) | Won 2-1 | +151770 |
| 3standard | 227 | Fukuda, Yuuya (1575) | Lost 0-2 | -211749 |
| 4standard | 868 | Shinohara, Gen (1519) | Lost 1-2 | -221727 |
| 5standard | 736 | Yazawa, Yoshimichi (1511) | Won 2-0 | +141741 |
| 6standard | 494 | Kitahara, Junya (1427) | Lost 0-2 | -241717 |
| 7standard | 700 | Morita, Akira (1510) | Lost 1-2 | -221695 |
| top | average opponent: 1524record: 3-4 | new rating: 1695 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1631 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 589 | Nanjo, Masashi (1783) | Lost 1-2 | -161615 |
| 3standard | 844 | Seki, Takashi (1520) | Won 2-1 | +171632 |
| 4standard | 778 | Kawamura, Sintarou (1521) | Lost 1-2 | -201612 |
| 5standard | 833 | Kanou, Yuuki (1444) | Won 2-0 | +151627 |
| 6standard | 522 | Ishii, Kenta (1552) | Won 2-1 | +161643 |
| 7standard | 518 | Aoki, Masatugu (1527) | Won 2-1 | +161659 |
| 8standard | 241 | Arita, Kouichirou (1587) | Won 2-1 | +171676 |
| 9standard | 292 | Tsujimoto, Hideki (1780) | Won 2-1 | +201696 |
| 10standard | 76 | Hirano, Shingo (1592) | Won 2-1 | +161712 |
| 11standard | 90 | Kawamata, Daisuke (1644) | Won 2-1 | +171729 |
| 12standard | 43 | Shingu, Kiichi (1590) | Lost 0-2 | -211708 |
| 13standard | 134 | Mori, Yuki (1488) | Won 2-1 | +141722 |
| 14standard | 67 | Kawahama, Yoshikazu (1768) | Won 2-0 | +191741 |
| 15standard | 52 | Hirano, Mikita (1785) | ID | 01741 |
| top | average opponent: 1613record: 10-3-1 | new rating: 1741 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1675 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 2215 | Shiraishi, Ginga (1468) | Won 2-0 | +151690 |
| 3sealed | 2033 | Saeki, Katsuhisa (1842) | Lost 1-2 | -151675 |
| 4sealed | 2200 | Tanaka, Yuuki8606 (1484) | Lost 1-2 | -221653 |
| 5sealed | 2270 | Sekizawa, Tomohiko (1399) | Lost 1-2 | -221631 |
| top | average opponent: 1548record: 1-3 | new rating: 1631 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 149 | Ishii, Takumi (1451) | Won 2-0 | +161603 |
| 3sealed | 216 | Sakai, Yoshiki (1563) | Won 2-1 | +171620 |
| 4sealed | 26 | Takasugi, Ryouta (1752) | Won 2-0 | +201640 |
| 5sealed | 18 | Mizuno, Kazuki (1578) | Won 2-1 | +171657 |
| 6sealed | 7 | Muranaka, Hiroya (1688) | Won 2-0 | +191676 |
| 7sealed | 1 | Zhang, Meng Qiu (2046) | Lost 0-2 | -121664 |
| 8sealed | 11 | Tong, King Yim Kingston (1832) | Lost 0-2 | -151649 |
| 9sealed | 66 | Watanabe, Masashi5421 (1573) | Won 2-1 | +171666 |
| 10draft | 63 | Kodama, Ren (1557) | Lost 1-2 | -201646 |
| 12draft | 57 | Sugiyama, Syun (1530) | Lost 0-2 | -201626 |
| 13draft | 117 | Kawano, Tatsurou (1458) | Won 2-0 | +151641 |
| 14draft | 40 | Ohashi, Akira (1618) | Won 2-0 | +171658 |
| 15draft | 44 | Nishiura, Ryosuke (1606) | Won 2-0 | +171675 |
| top | average opponent: 1635record: 9-4 | new rating: 1675 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 677 | Shimamura, Kazushige (1480) | Lost 1-2 | -201550 |
| 2sealed | 759 | Kawa, Hirokazu (1482) | Won 2-0 | +171567 |
| 3sealed | 765 | Tachibana, Kentarou (1493) | Won 2-1 | +161583 |
| 4sealed | 680 | Tung, Nick (1611) | Won 2-0 | +191602 |
| 5sealed | 591 | Motomura, Shigeru (1688) | Lost 0-2 | -171585 |
| 6sealed | 718 | Shiomi, Genki (1607) | Won 2-0 | +191604 |
| 7sealed | 665 | Mii, Masayuki (1681) | Lost 1-2 | -171587 |
| top | average opponent: 1578record: 4-3 | new rating: 1587 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Satou, Itaru (1500) | Lost 0-2 | -201561 |
| 2sealed | 437 | Tomioka, Teppei (1482) | Won 2-0 | +171578 |
| 3sealed | 407 | Oh, Young Seok (1480) | Won 2-0 | +161594 |
| 4sealed | 131 | Sugisawa, Daiki (1497) | Lost 0-2 | -201574 |
| 5sealed | 274 | Otani, Makoto (1406) | Won 2-1 | +151589 |
| 6sealed | 154 | Okada, Kou (1508) | Lost 1-2 | -191570 |
| top | average opponent: 1479record: 3-3 | new rating: 1570 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 64 | Uchida, Yuki (1511) | Lost 1-2 | -181482 |
| 5extended | 184 | Ishii, Hayato (1801) | Won 2-1 | +241506 |
| 6extended | 101 | Chi, Tatsuya (1647) | Won 2-0 | +201526 |
| 7extended | 33 | Marr, Mat (1834) | Won 2-1 | +241550 |
| 8extended | 52 | Kimura, Kazuki (1741) | Won 2-1 | +211571 |
| 9extended | 21 | Arita, Ryuichi (1838) | Lost 0-2 | -131558 |
| 10extended | 45 | Itou, Motoaki (1614) | Lost 0-2 | -171541 |
| 11extended | 51 | Nagami, Youichi (1539) | Won 2-1 | +181559 |
| 12extended | 35 | Shimizu, Naoki (1934) | Won 2-0 | +251584 |
| 13extended | 17 | Brozek, Petr (1920) | Lost 1-2 | -131571 |
| 14extended | 30 | Asahara, Akira (1938) | Lost 0-2 | -111560 |
| 15extended | 48 | Yotsumoto, Yuki (1710) | Won 2-0 | +211581 |
| top | average opponent: 1752record: 7-5 | new rating: 1581 | ||