Hamaguchi, Masakuni
Current rating: 1853 (#1128)
Record: 88-67
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2022
- 2023
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1840 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Hashizume, Hayato (1617) | Won 2-1 | +141854 |
| 2standard | 28 | Fujiwara, Mizuki (1593) | Won 2-0 | +131867 |
| 3standard | 12 | Yuda, Kazunari (1541) | Won 2-1 | +131880 |
| 4standard | 3 | Horie, Masashi (1558) | Won 2-1 | +121892 |
| 5standard | 5 | Itou, Isamu (1714) | Won 2-0 | +151907 |
| 6standard | 2 | Noine, Kazuhiro (1930) | Won 2-0 | +181925 |
| 7standard | 1 | Ozawa, Takeshi (1996) | Lost 1-2 | -161909 |
| 8standard | 4 | Sato, Rei (1940) | Lost 0-2 | -181891 |
| 9standard | 6 | Itou, Motoaki (2030) | Won 2-1 | +211912 |
| 10standard | 4 | Ichikawa, Hideyuki (1923) | Lost 0-2 | -181894 |
| 11standard | 13 | Satou, Fumiaki (1601) | Lost 1-2 | -231871 |
| 12standard | 11 | Wada, Yuki (1918) | Lost 1-2 | -181853 |
| top | average opponent: 1780record: 7-5 | new rating: 1853 | ||
| Regional Championships Aichi 2022 (pioneer) | starting rating: 1854 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 76 | Ma, Noah (1983) | Lost 1-2 | -161838 |
| 2pioneer | 70 | Kuroda, Masashiro (1861) | Won 2-1 | +181856 |
| 3pioneer | 27 | Ishikawa, Kenji (1547) | Won 2-0 | +131869 |
| 4pioneer | 37 | Nagata, Masaya (1472) | Won 2-0 | +111880 |
| 5pioneer | 8 | Tanaka, Naohito (1462) | Won 2-0 | +111891 |
| 6pioneer | 14 | Homma, Akira (1533) | Won 2-1 | +121903 |
| 7pioneer | 10 | Yasooka, Shota (2118) | Lost 1-2 | -151888 |
| 8pioneer | 7 | Hasegawa, Atusi (1385) | Lost 0-2 | -261862 |
| 9pioneer | 20 | Matsuura, Takumi (1861) | Lost 1-2 | -181844 |
| 10pioneer | 24 | Kobayashi, Akira (1519) | Won 2-1 | +121856 |
| 11pioneer | 16 | Mikami, Yoshirou (1957) | Lost 1-2 | -161840 |
| top | average opponent: 1700record: 6-5 | new rating: 1840 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1742 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 183 | Kojima, Masaki (1522) | Won 2-0 | +141756 |
| 3standard | 319 | Liu, Xuan (1633) | Won 2-1 | +151771 |
| 4standard | 16 | Ikeda, Hidenari (1464) | Won 2-1 | +131784 |
| 5standard | 80 | Okita, Akito (1473) | Lost 1-2 | -241760 |
| 6standard | 111 | Tan, Wee Li (1519) | Won 2-1 | +141774 |
| 7standard | 120 | Nagao, Taku (1539) | Won 2-1 | +141788 |
| 8standard | 70 | Tanigawa, Futa (1561) | Won 2-1 | +141802 |
| 9standard | 28 | Urasaki, Takayuki (1803) | Lost 1-2 | -181784 |
| 10standard | 90 | Furuta, Kento (1612) | Won 2-0 | +151799 |
| 11standard | 34 | Yokota, Takuma (1611) | Won 2-1 | +141813 |
| 12standard | 15 | Ozawa, Takeshi (2019) | Lost 0-2 | -141799 |
| 13standard | 61 | Kawasaki, Keita (1945) | Won 2-1 | +211820 |
| 14standard | 36 | Sakurai, Itu'Sei (1678) | Won 2-1 | +151835 |
| 15standard | 28 | Takao, Shota (1860) | Won 2-1 | +191854 |
| top | average opponent: 1660record: 11-3 | new rating: 1854 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1654 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 454 | Tsujimoto, Hideki (1569) | Won 2-0 | +171671 |
| 2standard | 455 | Ichikawa, Takahiro (1518) | Won 2-1 | +151686 |
| 4standard | 258 | Honda, Atsuo (1713) | Won 2-1 | +181704 |
| 5standard | 239 | Tsuda, Tomohiro (1614) | Won 2-0 | +171721 |
| 6standard | 188 | Kinoshita, Akira (1464) | Won 2-1 | +131734 |
| 7standard | 191 | Ishikawa, Takuma 0419 (1621) | Won 2-1 | +161750 |
| 8standard | 186 | Noine, Kazuhiro (1712) | Lost 0-2 | -191731 |
| 9standard | 29 | Takano, Shota (1577) | Lost 0-2 | -211710 |
| 10standard | 76 | Iimura, Yuta (1611) | Won 2-0 | +171727 |
| 11standard | 54 | Yamamoto, Takayuki (1512) | Won 2-1 | +141741 |
| 12standard | 18 | Kawakami, Takehito (1877) | Won 2-0 | +201761 |
| 13standard | 12 | Hiyama, Syunsuke (1700) | Lost 0-2 | -191742 |
| 14standard | 23 | Wada, Yasutaka (1823) | Won 2-0 | +201762 |
| 15standard | 18 | Cho, Jae Seok (1646) | Lost 1-2 | -201742 |
| top | average opponent: 1640record: 10-4 | new rating: 1742 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1698 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 20 | Ishigaki, Shogo (1478) | Lost 1-2 | -221676 |
| 3sealed | 645 | Takeuchi, Akinari (1648) | Won 2-0 | +171693 |
| 4sealed | 512 | Sano, Hatsuki (1513) | Won 2-0 | +151708 |
| 5sealed | 255 | Yasuda, Masahiro (1575) | Lost 0-2 | -201688 |
| 6sealed | 470 | Dagen, Pierre (1884) | Lost 0-2 | -151673 |
| 7sealed | 773 | Ono, Shoichi (1614) | Lost 0-2 | -191654 |
| top | average opponent: 1619record: 2-4 | new rating: 1654 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1741 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 532 | Takeshita, Masato (1462) | Lost 1-2 | -231718 |
| 3modern | 994 | Koga, Ryuji (1593) | Lost 1-2 | -201698 |
| top | average opponent: 1528record: 0-2 | new rating: 1698 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1697 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 309 | Yoshida, Daisuke (1518) | Won 2-0 | +151712 |
| 3standard | 113 | Hagiwara, Masakatsu (1603) | Lost 1-2 | -201692 |
| 4standard | 495 | Sasaki, Kensuke (1358) | Won 2-0 | +121704 |
| 5standard | 497 | Motoshi, Takahashi (1439) | Won 2-0 | +141718 |
| 6standard | 197 | Kondo, Fumiya (1548) | Lost 0-2 | -211697 |
| 7standard | 590 | Hanano, Tetsuaki (1353) | Won 2-1 | +121709 |
| 8standard | 390 | Saijo, Yuichi (1688) | Lost 1-2 | -191690 |
| 9standard | 342 | Tsukamoto, Mitsuru (1666) | Won 2-1 | +181708 |
| 10standard | 408 | Hiyama, Syunsuke (1513) | Won 2-1 | +141722 |
| 11standard | 122 | Naitou, Takashi (1732) | Won 2-0 | +181740 |
| 12standard | 87 | Suganuma, Takayuki (1742) | Won 2-1 | +181758 |
| 13standard | 86 | Chye, Yian Hsiang (1976) | Lost 0-2 | -141744 |
| 14standard | 106 | Sotomura, Yoshihiro (1668) | Lost 1-2 | -191725 |
| 15standard | 163 | Anan, Kazuyoshi (1618) | Won 2-0 | +161741 |
| top | average opponent: 1601record: 9-5 | new rating: 1741 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 384 | Hikino, Masaharu (1517) | Won 2-1 | +171562 |
| 3standard | 466 | Sasao, Yusuke (1597) | Won 2-1 | +191581 |
| 4standard | 84 | Kaga, Hiroyuki (1482) | Won 2-1 | +161597 |
| 5standard | 140 | Soh, Weng Heng (1852) | Won 2-0 | +231620 |
| 6standard | 83 | Ou, Kaitou (1771) | Lost 1-2 | -161604 |
| 7standard | 88 | Chen, Chun Lin (1563) | Won 2-1 | +181622 |
| 8standard | 116 | Seo, Noboru (1584) | Won 2-0 | +171639 |
| 9standard | 29 | Tabata, Yuusuke (1604) | Won 2-1 | +171656 |
| 10standard | 36 | Wang, Kaiyin (1843) | Lost 1-2 | -141642 |
| 11standard | 43 | Nakamura, Atsushi (1842) | Won 2-1 | +211663 |
| 12standard | 33 | Ishii, Ryou (1558) | Lost 1-2 | -201643 |
| 13standard | 77 | Wee, Pang Ming (1791) | Won 2-1 | +211664 |
| 14standard | 58 | Watanabe, Yuta (1643) | Won 2-1 | +181682 |
| 15standard | 30 | Sugimoto, Renn (1561) | Won 2-0 | +151697 |
| top | average opponent: 1658record: 11-3 | new rating: 1697 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 169 | Hirashima, Yuutarou (1829) | Won 2-1 | +231566 |
| 3sealed | 422 | Nishidome, Keitarou (1538) | Lost 0-2 | -191547 |
| 4sealed | 596 | Nishiyama, Takashi (1596) | Won 2-0 | +191566 |
| 5sealed | 367 | Mori, Masaki (1426) | Won 2-0 | +151581 |
| 6sealed | 312 | Inoue, Ojiro (1583) | Lost 0-2 | -171564 |
| 7sealed | 277 | Honma, Rie (1520) | Lost 1-2 | -191545 |
| top | average opponent: 1582record: 3-3 | new rating: 1545 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 247 | Furusato, Hiroshi (1710) | Lost 0-2 | -131418 |
| 3standard | 635 | Kobayashi, Yuki9366 (1514) | Won 2-0 | +201438 |
| 4standard | 611 | Shiraishi, Masaharu (1723) | Won 2-0 | +231461 |
| 5standard | 302 | Tanaka, Naohito (1533) | Won 2-1 | +191480 |
| 6standard | 283 | Ogata, Syou (1586) | Won 2-0 | +201500 |
| 7standard | 94 | Tomomura, Hitoshi (1611) | Lost 1-2 | -161484 |
| 8standard | 288 | Watanabe, Tsubasa (1533) | Won 2-0 | +191503 |
| 9standard | 82 | Matsuo, Yoshiyuki (1645) | Won 2-0 | +211524 |
| 10standard | 59 | Okada, Yuki 4232 (1603) | Won 2-0 | +191543 |
| 11standard | 61 | Kurihara, Mitsuaki (1614) | Won 2-0 | +191562 |
| 12standard | 31 | McNeace, Shawn (1687) | Lost 0-2 | -151547 |
| 13standard | 50 | Takamizu, Tomohiro (1716) | Lost 1-2 | -151532 |
| 14standard | 103 | Takamatsu, Masahiro (1593) | Won 2-0 | +191551 |
| 15standard | 67 | Saito, Tomoharu (2149) | Lost 0-2 | -81543 |
| top | average opponent: 1658record: 9-5 | new rating: 1543 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 1013 | Onuki, Hirohito (1538) | Lost 0-2 | -171431 |
| top | record: 0-1 | new rating: 1431 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 183 | Kaneko, Yasuki (1534) | Lost 0-2 | -161448 |
| top | record: 0-1 | new rating: 1448 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 794 | Hasegawa, Shun-ya (1574) | Lost 1-2 | -171498 |
| 4sealed | 817 | Kaneko, Masashi (1522) | Lost 0-2 | -171481 |
| 5sealed | 979 | Shimizu, Ryouta (1558) | Lost 1-2 | -171464 |
| top | average opponent: 1551record: 0-3 | new rating: 1464 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 259 | Tamura, Tomoya (1480) | Won 2-0 | +191486 |
| 3modern | 90 | Hangyo, Tatsuya (1523) | Lost 1-2 | -181468 |
| 4modern | 294 | Koyanagi, Takashi (1595) | Won 2-1 | +211489 |
| 5modern | 191 | Ikeyama, Kei (1536) | Lost 0-2 | -181471 |
| 6modern | 266 | Ohno, Koutarou (1519) | Won 2-0 | +191490 |
| 7modern | 227 | Kanou, Takuya (1558) | Won 2-0 | +201510 |
| 8modern | 113 | Ishibashi, Takuya (1476) | Won 2-0 | +171527 |
| 9modern | 118 | Yoshida, Shuhei (1568) | Won 2-1 | +191546 |
| 10modern | 116 | Ishii, Taisuke (1753) | Lost 1-2 | -151531 |
| 11modern | 105 | Arita, Kento (1700) | Lost 1-2 | -151516 |
| 12modern | 109 | Nagase, Yoshinobu (1528) | Won 2-0 | +191535 |
| 13modern | 97 | Sugimoto, Yuta (1460) | Lost 1-2 | -201515 |
| top | average opponent: 1558record: 7-5 | new rating: 1515 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1408 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 620 | Fujimaki, Satoshi (1554) | Lost 0-2 | -151393 |
| 3sealed | 777 | Hirabayashi, Yuki1029 (1505) | Won 2-1 | +201413 |
| 4sealed | 699 | Takeda, Yoshihide (1470) | Won 2-1 | +191432 |
| 5sealed | 637 | Kase, Koichi (1456) | Won 2-1 | +191451 |
| 6sealed | 564 | Shikata, Nobuaki (1651) | Won 2-0 | +211472 |
| 7sealed | 545 | Shibuya, Takuma (1715) | Lost 1-2 | -131459 |
| 8sealed | 588 | Wang, Chih Ming (1656) | Lost 1-2 | -151444 |
| 9sealed | 611 | Saito, Takaya (1742) | Won 2-0 | +231467 |
| top | average opponent: 1594record: 5-3 | new rating: 1467 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1404 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 116 | Hirata, Koutatsu (1468) | Won 2-0 | +191423 |
| 4standard | 74 | Kou, Changsu (1777) | Lost 1-2 | -121411 |
| 5standard | 173 | Kusakabe, Shuichi (1642) | Won 2-0 | +221433 |
| 6standard | 115 | Itou, Kouei (1580) | Lost 1-2 | -151418 |
| 7standard | 126 | Inazawa, Ryo (1634) | Lost 1-2 | -141404 |
| 8standard | 145 | Urata, Takurou (1538) | Won 2-1 | +201424 |
| 9standard | 254 | Tsujimoto, Hideki (1537) | Lost 0-2 | -161408 |
| top | average opponent: 1597record: 3-4 | new rating: 1408 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 86 | Tajiri, Jun (1400) | Won 2-0 | +161484 |
| 3standard | 102 | Oonishi, Tatsuya (1412) | Lost 0-2 | -191465 |
| 4standard | 304 | Harano, Takahiro (1694) | Lost 0-2 | -141451 |
| 5standard | 299 | Tsunoda, Yotaro (1500) | Lost 0-2 | -171434 |
| 6standard | 426 | Nakamura, Kousuke (1560) | Won 2-0 | +201454 |
| 7standard | 341 | Terazawa, Hiroyuki (1485) | Lost 1-2 | -171437 |
| 8standard | 310 | Yamada, Takaaki (1597) | Lost 0-2 | -151422 |
| 9standard | 288 | Sato, Keisuke (1433) | Lost 0-2 | -181404 |
| top | average opponent: 1510record: 2-6 | new rating: 1404 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 307 | Katou, Masaya (1525) | Won 2-1 | +181518 |
| 3standard | 25 | Hirayama, Shigetaka (1465) | Lost 0-2 | -191499 |
| 4standard | 328 | Murata, Atsushi (1582) | Lost 1-2 | -161483 |
| 5standard | 430 | Matsubara, Takeyuki (1484) | Lost 0-2 | -181465 |
| 6standard | 549 | Tanaka, Makoto (1440) | Won 2-0 | +181483 |
| 7standard | 418 | Takami, Yuta (1479) | Won 2-1 | +171500 |
| 8standard | 303 | Fujita, Osamu (1824) | Lost 1-2 | -121488 |
| 9standard | 283 | Ichikawa, Yasura (1344) | Lost 0-2 | -201468 |
| top | average opponent: 1518record: 3-5 | new rating: 1468 | ||