Ookura, Haruka
Current rating: 1713 (#5692)
Record: 43-31-1
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1692 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 90 | Yamaguchi, Takurou (1399) | Won 2-0 | +131705 |
| 2pioneer | 23 | Sawada, Tetsushi (1617) | Won 2-1 | +171722 |
| 3pioneer | 25 | Kuroda, Masashiro (1811) | Won 2-1 | +191741 |
| 4pioneer | 4 | Hashizume, Hayato (1646) | Lost 0-2 | -201721 |
| 5pioneer | 16 | Utsunomiya, Takumi (1941) | Won 2-0 | +221743 |
| 6pioneer | 18 | Kobayashi, Akira (1574) | Lost 1-2 | -211722 |
| 7pioneer | 30 | Takeo, Shin (1548) | Won 2-0 | +151737 |
| 8pioneer | 26 | Kobayashi, Tatsuumi (1753) | Lost 1-2 | -181719 |
| 9pioneer | 20 | Terasawa, Yu (1701) | Won 2-1 | +181737 |
| 10pioneer | 17 | Inui, Takashi (1744) | Won 2-1 | +181755 |
| 11pioneer | 10 | Hara, Kouki (1589) | Lost 1-2 | -211734 |
| 12pioneer | 15 | Maruyama, Yuichiro (1582) | Lost 0-2 | -211713 |
| top | average opponent: 1659record: 7-5 | new rating: 1713 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1708 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 346 | Kishida, Hiroaki (1529) | Won 2-0 | +141722 |
| 2standard | 3 | Shiota, Fumihiko (1887) | Lost 0-2 | -151707 |
| 3standard | 652 | Igarashi, Masaki (1376) | Won 2-1 | +131720 |
| 4standard | 475 | Sakamoto, Masaaki (1533) | Lost 0-2 | -221698 |
| 5standard | 639 | Maruyama, Koji (1579) | Won 2-1 | +161714 |
| 6standard | 447 | Goto, Yuki (1506) | Lost 1-2 | -221692 |
| top | average opponent: 1568record: 3-3 | new rating: 1692 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 83 | Kanbayashi, Hirotaka (1468) | Won 2-0 | +161585 |
| 4modern | 136 | Yuba, Takayuki (1629) | Won 2-0 | +191604 |
| 5modern | 27 | Suzuki, Takuya 2595 (1536) | Lost 1-2 | -201584 |
| 6modern | 191 | Kotouge, Tatsuya (1719) | Won 2-1 | +211605 |
| 7modern | 184 | Hung, Juo Wen (1706) | Won 2-0 | +201625 |
| 8modern | 28 | O'Keefe, Mitchell (1658) | Won 2-0 | +181643 |
| 9modern | 20 | Terada, Shuuhei (1711) | Won 2-0 | +201663 |
| 10modern | 23 | Lin, Changhui (1585) | Won 2-0 | +161679 |
| 11modern | 22 | Kimura, Shigeki (1801) | Lost 0-2 | -161663 |
| 12modern | 61 | Ueda, Tadahiko (1604) | Won 2-0 | +171680 |
| 13modern | 40 | Suematsu, Takaaki (1993) | Won 2-1 | +241704 |
| 14modern | 12 | Tamada, Ryoichi (1802) | Lost 0-2 | -161688 |
| 15modern | 34 | Yokoyama, Shohei (1800) | Won 2-0 | +201708 |
| top | average opponent: 1693record: 10-3 | new rating: 1708 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 233 | Tasaki, Ryo (1882) | Lost 1-2 | -121575 |
| 4legacy | 619 | Ito, Shun (1516) | Lost 0-2 | -191556 |
| 5legacy | 735 | Ishikawa, Shou (1617) | Won 2-1 | +191575 |
| 6legacy | 371 | Komachi, Akinori (1510) | Won 2-1 | +161591 |
| 7legacy | 361 | Suganuma, Takayuki (1628) | Lost 1-2 | -171574 |
| 8legacy | 641 | Wang, Ge-Tine (1428) | Won 2-1 | +151589 |
| 9legacy | 500 | Takahashi, Masakazu (1532) | Won 2-0 | +171606 |
| 10legacy | 249 | Sueyosi, Ikkou (1558) | Lost 1-2 | -181588 |
| 11legacy | 324 | Tashiro, Kouichi (1628) | Lost 1-2 | -181570 |
| 12legacy | 322 | Noto, Kohei (1528) | Won 2-0 | +181588 |
| 13legacy | 268 | Tada, Hiroyuki (1546) | Lost 1-2 | -191569 |
| top | average opponent: 1579record: 5-6 | new rating: 1569 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 335 | Nakajima, Takanori (1500) | Won 2-0 | +161591 |
| 2standard | 645 | Tanaka, Hironao (1496) | Won 2-0 | +171608 |
| 3standard | 28 | Kojima, Yoshifumi (1547) | Lost 0-2 | -201588 |
| 4standard | 841 | Kuno, Takashi (1619) | Won 2-1 | +191607 |
| 5standard | 570 | Seet, Danny (1580) | Lost 0-2 | -181589 |
| 6standard | 794 | Yuji, Tsukihara (1517) | Lost 0-2 | -201569 |
| 7standard | 1009 | Omi, Akeshi (1499) | Won 2-0 | +171586 |
| 8standard | 838 | Kawahara, Tadashi (1530) | Won 2-0 | +171603 |
| 9standard | 660 | Kibe, Keisuke (1737) | Lost 1-2 | -161587 |
| top | average opponent: 1558record: 5-4 | new rating: 1587 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 128 | Miyamoto, Hiroya (1698) | Lost 1-2 | -161601 |
| 4standard | 723 | Zaizen, Kengo (1517) | Lost 0-2 | -201581 |
| 5standard | 855 | Iwamoto, Reo (1611) | Won 2-1 | +191600 |
| 6standard | 545 | Nakamura, Yuki6123 (1514) | Won 2-1 | +161616 |
| 7standard | 374 | Hata, Hideaki (1441) | Lost 1-2 | -211595 |
| 8standard | 479 | Jimichi, Makoto (1474) | Lost 0-2 | -201575 |
| top | average opponent: 1542record: 2-4 | new rating: 1575 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1296 | Arias, Alma (1500) | Won 2-0 | +191482 |
| 2sealed | 1030 | Maruno, Takaaki (1542) | Lost 1-2 | -171465 |
| 3sealed | 1151 | Yamazaki, Takefumi (1500) | Won 2-0 | +191484 |
| 4sealed | 1103 | Takahashi, Harunobu (1495) | Won 2-1 | +181502 |
| 5sealed | 906 | Kuo, Yu-Liang (1582) | Won 2-0 | +191521 |
| 6sealed | 940 | Kitahashi, Kichi (1555) | Won 2-1 | +191540 |
| 7sealed | 848 | Hagiwara, Noriyuki (1787) | Won 2-1 | +221562 |
| 8sealed | 816 | Kobayashi, Takahito (1771) | Won 2-1 | +221584 |
| 9sealed | 820 | Hashimoto, Yu1509 (1581) | Won 2-0 | +181602 |
| 10draft | 132 | Sakimura, Akihiko (1821) | Won 2-0 | +221624 |
| 11draft | 10 | Oshikawa, Akira (1647) | Won 2-1 | +181642 |
| 12draft | 44 | Matsubara, Ichiro (1825) | Lost 0-2 | -141628 |
| 13draft | 172 | Sano, Daiki (1691) | Lost 1-2 | -171611 |
| 14draft | 22 | Suzuki, Kyou (1728) | Won 2-0 | +201631 |
| 15draft | 41 | Chye, Yian Hsiang (1859) | Lost 0-2 | -141617 |
| top | average opponent: 1659record: 11-4 | new rating: 1617 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 148 | Muramatsu, Daisuke (1535) | Lost 0-2 | -171483 |
| 2sealed | 400 | Hipperson, Aaron (1426) | Draw 1-1 | -11482 |
| 3sealed | 453 | Ishizaka, Naoki (1465) | Lost 0-2 | -191463 |
| top | average opponent: 1476record: 0-2-1 | new rating: 1463 | ||