Obara, Yuichiro
Current rating: 1610
Record: 15-11
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 55 | Takagi, Yuma (1583) | Lost 1-2 | -191611 |
| 2pioneer | 71 | Shibata, Akira (1588) | Lost 1-2 | -181593 |
| 3pioneer | 117 | Oku, Daisaku (1525) | Lost 0-2 | -201573 |
| 4pioneer | 110 | Nakajima, Chikara (1644) | Won 2-0 | +201593 |
| 5pioneer | 91 | Cho, Jae Seok (1573) | Won 2-0 | +171610 |
| 6pioneer | 69 | Takahashi, Ryo (1588) | Won 2-0 | +181628 |
| 7pioneer | 59 | Oshima, Shimpei (1655) | Lost 0-2 | -181610 |
| top | average opponent: 1594record: 3-4 | new rating: 1610 | ||
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 65 | Miki, Shoya (1500) | Won 2-1 | +181512 |
| 2pioneer | 34 | Fujiwara, Mizuki (1655) | Won 2-0 | +211533 |
| 3pioneer | 2 | Imazawa, Junpei (1552) | Won 2-1 | +181551 |
| 4pioneer | 12 | Nomiya, Yohei (1614) | Lost 0-2 | -171534 |
| 5pioneer | 15 | Kumon, Shun (1565) | Won 2-0 | +191553 |
| 6pioneer | 6 | Fukudome, Yuu (1740) | Won 2-1 | +211574 |
| 7pioneer | 11 | Kubota, Kei (1634) | Won 2-0 | +191593 |
| 8pioneer | 6 | Yoshigoe, Hisamichi (1755) | Lost 1-2 | -151578 |
| 9pioneer | 7 | Asaumi, Hiroki (1710) | Won 2-0 | +201598 |
| 10pioneer | 8 | Kyogoku, Kyosuke (1847) | Won 2-1 | +231621 |
| 11pioneer | 5 | Yada, Kazuki (1963) | Won 2-1 | +241645 |
| 12pioneer | 1 | Miyawaki, Takeshi (1734) | ID | 01645 |
| Qpioneer | Ogasawara, Tomoaki (1816) | Lost 0-2 | -151630 | |
| top | average opponent: 1699record: 9-3-1 | new rating: 1630 | ||
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 65 | Yoon, Je Yeon (1721) | Won 2-1 | +221522 |
| 2standard | 7 | Horie, Masashi (1521) | Lost 1-2 | -181504 |
| 3standard | 71 | Abe, Masaru (1540) | Lost 0-2 | -171487 |
| 4standard | 74 | Kanayama, Haruki (1448) | Lost 1-2 | -191468 |
| 5standard | 77 | Yamazaki, Daisuke (1443) | Won 2-0 | +171485 |
| 6standard | 57 | Inui, Takashi (1733) | Won 2-0 | +231508 |
| 7standard | 49 | Kojima, Yoshifumi (1734) | Lost 0-2 | -141494 |
| top | average opponent: 1592record: 3-4 | new rating: 1494 | ||