Kai, Hiroyuki
Current rating: 1417
Record: 29-33-1
| Regional Championships Aichi 2022 (pioneer) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 2 | Kaga, Hiroyuki (1532) | Lost 1-2 | -171468 |
| 2pioneer | 61 | Sugizaki, Shunsuke (1563) | Lost 1-2 | -161452 |
| 3pioneer | 97 | Seno, Takeshi (1474) | Lost 1-2 | -181434 |
| 5pioneer | 78 | Sugimoto, Takashi (1469) | Lost 0-2 | -171417 |
| top | average opponent: 1509record: 0-4 | new rating: 1417 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 119 | Furukawa, Hiroki (1739) | Lost 0-2 | -141507 |
| 2legacy | 558 | Ito, Ryo (1305) | Won 2-1 | +151522 |
| 3legacy | 486 | Shibata, Takahiro (1426) | Lost 0-2 | -201502 |
| 4legacy | 610 | Shimazu, Yoshiki (1591) | Lost 1-2 | -171485 |
| top | average opponent: 1515record: 1-3 | new rating: 1485 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 513 | Fukuji, Yuta (1550) | Lost 0-2 | -181521 |
| top | record: 0-1 | new rating: 1521 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 727 | Tanabe, Koichiro (1464) | Won 2-0 | +161549 |
| 2legacy | 708 | Tamai, Daiki (1519) | Won 2-0 | +181567 |
| 3legacy | 706 | Yamashita, Kazuya (1502) | Lost 0-2 | -191548 |
| 4legacy | 758 | Watanabe, Yoshiaki (1399) | Lost 1-2 | -211527 |
| 5legacy | 739 | Yamada, Taichiro (1517) | Won 2-1 | +181545 |
| 6legacy | 661 | Takata, Mutsumu (1422) | Won 2-0 | +161561 |
| 7legacy | 595 | Takashima, Ken (1458) | Lost 0-2 | -201541 |
| 8legacy | 680 | Hirano, Takeshi (1484) | Won 2-1 | +171558 |
| 9legacy | 618 | Maeda, Unknown (1528) | Lost 1-2 | -191539 |
| top | average opponent: 1477record: 5-4 | new rating: 1539 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 158 | Saitou, Kazuya (1438) | Lost 0-2 | -201501 |
| 2sealed | 392 | Sornphiphatphong, Chanond (1482) | Lost 1-2 | -181483 |
| 3sealed | 482 | Kimura, Syun (1447) | Won 2-0 | +171500 |
| 4sealed | 473 | Kataoka, Asami (1523) | Won 2-1 | +181518 |
| 5sealed | 382 | Yoshioka, Yuki (1632) | Won 2-0 | +211539 |
| 6sealed | 300 | Kobayashi, Shigehisa (1262) | Lost 0-2 | -231516 |
| 7sealed | 284 | Sunaga, Masahiro (1544) | Won 2-1 | +181534 |
| 8sealed | 214 | Yoshida, Satoshi (1540) | Lost 1-2 | -181516 |
| 9sealed | 181 | Kondo, Hirotsugu (1430) | Won 2-1 | +171533 |
| top | average opponent: 1478record: 5-4 | new rating: 1533 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 110 | Yamada, Atsushi (1483) | Lost 1-2 | -191525 |
| 2extended | 217 | Miyajima, Kutoshi (1481) | Won 2-0 | +171542 |
| 3extended | 146 | Yamamoto, Yasutomo (1385) | Won 2-0 | +151557 |
| 4extended | 147 | Ito, Tomoki (1525) | Lost 1-2 | -181539 |
| 5extended | 184 | Yoshida, Shinsuke (1450) | Won 2-1 | +161555 |
| 6extended | 169 | Matsuda, Issui (1614) | Lost 1-2 | -171538 |
| 7extended | 168 | S., Tomoya (1498) | Lost 1-2 | -181520 |
| 8extended | 147 | Marcik, Michal (1700) | Lost 1-2 | -151505 |
| 9extended | 123 | Yamano, Tatsuto (1378) | Won 2-0 | +161521 |
| top | average opponent: 1502record: 4-5 | new rating: 1521 | ||
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 51 | Hirashima, Yuutarou (1735) | Won 2-1 | +211587 |
| 5sealed | 20 | Oiso, Masashi (1876) | Lost 0-2 | -131574 |
| 6sealed | 36 | Kurihara, Tomo (1610) | Lost 1-2 | -171557 |
| 7sealed | 64 | Yamamoto, Kentaro (1862) | Lost 0-2 | -131544 |
| top | average opponent: 1771record: 1-3 | new rating: 1544 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 172 | Yokoi, Masaki (1668) | Lost 1-2 | -171574 |
| 3standard | 183 | Kakehi, Takuma (1503) | Won 2-0 | +171591 |
| 4standard | 217 | Kawauchi, Masatomo (1505) | Draw 1-1 | -11590 |
| 5standard | 170 | Inoguchi, Hironobu (1580) | Won 2-1 | +171607 |
| 6standard | 102 | Haneki, Daisuke (1689) | Lost 0-2 | -161591 |
| 7standard | 203 | Matsumura, Takehiko (1401) | Lost 1-2 | -221569 |
| 8standard | 19 | Fukasawa, Taichi (1502) | Won 2-0 | +171586 |
| 9standard | 94 | Sawade, Makoto (1460) | Lost 1-2 | -201566 |
| top | average opponent: 1539record: 3-4-1 | new rating: 1566 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Yuki, Keiichirou (1500) | Won 2-1 | +171574 |
| 2sealed | 43 | Furukawa, Tadataka (1523) | Won 2-0 | +171591 |
| 3sealed | 27 | Nonaka, Kentarou (1758) | Won 2-1 | +211612 |
| 4sealed | 13 | Imai, Hideaki (1492) | Won 2-0 | +161628 |
| 5sealed | 4 | Maeno, Ryuju (1606) | Lost 1-2 | -191609 |
| 6sealed | 23 | Suzuki, Yuuji (1687) | Won 2-1 | +201629 |
| 7sealed | 11 | Ohnishi, Jyunpei (1496) | Lost 1-2 | -211608 |
| 8sealed | 50 | Kashima, Akihiro (1657) | Lost 0-2 | -171591 |
| top | average opponent: 1590record: 5-3 | new rating: 1591 | ||
| Grand Prix Kitakyushu 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 50 | Nakatani, Haruki (1582) | Lost 0-2 | -161484 |
| 2extended | 93 | Yamamoto, Daichi (1481) | Won 2-0 | +171501 |
| 3extended | 69 | Takeuchi, Hidehito (1442) | Lost 1-2 | -191482 |
| 4extended | 105 | Nakamura, Kenji (1497) | Won 2-0 | +191501 |
| 5extended | 72 | Izumi, Kimiaki (1573) | Won 2-1 | +191520 |
| 6extended | 78 | Nakamura, Yuusuke (1531) | Won 2-0 | +181538 |
| 7extended | 57 | Kanaike, Hiroyuki (1566) | Won 2-1 | +191557 |
| top | average opponent: 1525record: 5-2 | new rating: 1557 | ||