Ohta, Shun
Current rating: 1536
Record: 30-27-1
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 36 | Morimoto, Yutaro (1607) | Lost 1-2 | -171538 |
| 2pioneer | 84 | Tamura, Kento (1482) | Lost 0-2 | -191519 |
| 3pioneer | 113 | Takahashi, Ryo (1574) | Won 2-1 | +191538 |
| 4pioneer | 63 | KATAGIRI, KENTA (1495) | Lost 1-2 | -191519 |
| 5pioneer | 93 | Takahashi, Eiji (1623) | Lost 0-2 | -161503 |
| 6pioneer | 83 | Ogyu, Yoshiyuki (1314) | Won 2-1 | +151518 |
| 7pioneer | 68 | Yamashita, Yoshiki (1540) | Won 2-0 | +181536 |
| top | average opponent: 1519record: 3-4 | new rating: 1536 | ||
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 54 | Utsunomiya, Takumi (1991) | Lost 1-2 | -111541 |
| 2standard | 91 | Shimizu, Naoto (1543) | Won 2-0 | +181559 |
| 3standard | 49 | Ehara, Kouta (1622) | Lost 0-2 | -171542 |
| 4standard | 54 | Tanahashi, Masayasu (1735) | Lost 1-2 | -141528 |
| 5standard | 69 | Yoshida, Shintarou (1698) | Won 2-1 | +211549 |
| 6standard | 58 | Yamada, Yosuke (1710) | Lost 0-2 | -151534 |
| 7standard | 64 | Inui, Takashi (1710) | Won 2-0 | +211555 |
| top | average opponent: 1716record: 3-4 | new rating: 1555 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 24 | Ii, Keiichiro (1486) | Lost 1-2 | -201576 |
| 2pioneer | 519 | Kato, Ataru (1402) | Lost 1-2 | -211555 |
| 3pioneer | 729 | Toyoda, Yorito (1477) | Lost 0-2 | -201535 |
| 4pioneer | 774 | Sayama, Takeru (1451) | Won 2-1 | +171552 |
| top | average opponent: 1454record: 1-3 | new rating: 1552 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1624 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 415 | Suzuki, Shinji (1481) | Lost 1-2 | -201604 |
| 2legacy | 369 | Ebihara, Hirotaka (1644) | Won 2-1 | +181622 |
| 3legacy | 343 | Akagami, Tomofumi (1448) | Lost 1-2 | -211601 |
| 4legacy | 494 | Nagase, Iori (1483) | Won 2-1 | +161617 |
| 5legacy | 368 | Tejido Camunas, Agustin (1429) | Lost 0-2 | -211596 |
| top | average opponent: 1497record: 2-3 | new rating: 1596 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Tajitsu, Yoshiyuki (1500) | Lost 1-2 | -211611 |
| 2sealed | 636 | Nitta, Yuki (1584) | Lost 0-2 | -181593 |
| 3sealed | 1099 | Yamamoto, Shohei 2804 (1464) | Won 2-1 | +151608 |
| 4sealed | 898 | Kokubun, Taiki (1488) | Won 2-1 | +161624 |
| top | average opponent: 1509record: 2-2 | new rating: 1624 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1019 | Katou, Youdai (1500) | Lost 0-2 | -201632 |
| top | record: 0-1 | new rating: 1632 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 76 | Tamai, Yuno (1479) | Won 2-0 | +161641 |
| 2standard | 316 | Tanabe, Atsushi (1486) | Won 2-0 | +151656 |
| 3standard | 51 | Matsuo, Yoshiyuki (1608) | Lost 0-2 | -191637 |
| 4standard | 436 | Nakamura, Junya (1742) | Won 2-0 | +201657 |
| 5standard | 404 | Kinoshita, Akira (1510) | Won 2-0 | +151672 |
| 6standard | 182 | Takeda, Harunobu (1664) | Draw 1-1 | 01672 |
| 7standard | 206 | Fujii, Toshikazu (1582) | Lost 0-2 | -201652 |
| top | average opponent: 1582record: 4-2-1 | new rating: 1652 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 621 | Kitsunezuka, Masanori (1483) | Won 2-1 | +151630 |
| 2standard | 553 | Fukunaga, Nao (1494) | Won 2-0 | +161646 |
| 3standard | 672 | Takahashi, Kazuya (1525) | Won 2-0 | +161662 |
| 4standard | 557 | Wang, Zhu (1771) | Won 2-0 | +191681 |
| 5standard | 522 | Nakashima, Hajime (1774) | Lost 0-2 | -161665 |
| 6standard | 561 | Itou, Makoto3971 (1522) | Lost 1-2 | -201645 |
| 7standard | 581 | Gohara, Akira (1568) | Lost 1-2 | -201625 |
| top | average opponent: 1591record: 4-3 | new rating: 1625 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 301 | Matsuda, Yuuki (1583) | Won 2-0 | +201520 |
| 2standard | 199 | Ishihara, Akira (1518) | Won 2-0 | +171537 |
| 3standard | 205 | Ebihara, Hirotaka (1664) | Won 2-0 | +211558 |
| 4standard | 50 | Hirata, Minoru (1675) | Lost 1-2 | -161542 |
| 5standard | 144 | Uzawa, Yuichi (1492) | Won 2-0 | +171559 |
| 6standard | 209 | Shirasaka, Satoshi (1477) | Won 2-1 | +171576 |
| 7standard | 100 | Takimura, Kazuyuki (1544) | Won 2-1 | +171593 |
| 8standard | 86 | Kato, Akinori (1527) | Won 2-1 | +171610 |
| 9standard | 36 | Emori, Shinichi (1586) | Won 2-1 | +171627 |
| 10standard | 23 | Higami, Keisuke (1626) | Won 2-0 | +181645 |
| 11standard | 9 | Kamo, Riki (1621) | Lost 0-2 | -181627 |
| 12standard | 16 | Nomura, Ryosuke (1568) | Lost 1-2 | -191608 |
| 13standard | 32 | Ino, Kentaro (1847) | Lost 0-0 | -141594 |
| 14standard | 72 | Takimoto, Yusuke (1630) | Won 2-0 | +191613 |
| 15standard | 48 | Takeda, Harunobu (1641) | Won 2-0 | +181631 |
| 16standard | 40 | Maeda, Lucio (1705) | Lost 0-2 | -161615 |
| top | average opponent: 1607record: 11-5 | new rating: 1615 | ||