Kubo, Hirotaka
Current rating: 1538
Record: 51-51-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 88 | Komori, Shota (1488) | Lost 1-2 | -181516 |
| 3pioneer | 450 | Ono, Tomoyoshi (1486) | Won 2-0 | +171533 |
| 4pioneer | 450 | Kanamori, Yudai (1483) | Won 2-0 | +171550 |
| 5pioneer | 351 | Kim, Namhun (1532) | Won 2-0 | +181568 |
| 6pioneer | 211 | Ohnishi, Jyunpei (1835) | Lost 1-2 | -131555 |
| 7pioneer | 276 | Hoshide, Naonari (1613) | Lost 0-2 | -171538 |
| top | average opponent: 1573record: 3-3 | new rating: 1538 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 434 | Kawakami, Sintarou (1500) | Lost 1-2 | -191539 |
| 3sealed | 603 | Miyata, Dai (1506) | Lost 0-2 | -191520 |
| 4sealed | 885 | Saito, Keisuke (1426) | Won 2-0 | +171537 |
| 5sealed | 623 | Masuda, Hiroki (1562) | Won 2-1 | +181555 |
| 6sealed | 370 | Kaneko, Hiroto (1408) | Lost 1-2 | -211534 |
| top | average opponent: 1481record: 2-3 | new rating: 1534 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 323 | Sakamoto, Ryota (1410) | Lost 0-2 | -221603 |
| 2modern | 933 | Kaminokado, Sunao (1481) | Lost 1-2 | -201583 |
| 3modern | 1124 | Takeuchi, Raku (1467) | Won 2-0 | +161599 |
| 4modern | 1097 | Sugimoto, Takaaki (1467) | Lost 0-2 | -211578 |
| 5modern | 1017 | Matsugatani, Akishi (1463) | Lost 0-2 | -201558 |
| top | average opponent: 1458record: 1-4 | new rating: 1558 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 158 | Katayama, Satoru (1500) | Lost 1-2 | -181522 |
| 2sealed | 769 | Koshiba, Norihiko (1451) | Won 2-1 | +161538 |
| 3sealed | 616 | Katagiri, Shinichi (1572) | Won 2-1 | +191557 |
| 4sealed | 532 | Takeda, Hiroshi (1482) | Won 2-1 | +161573 |
| 5sealed | 379 | Yokoyama, Takaya (1613) | Won 2-1 | +191592 |
| 6sealed | 168 | Zhang, Yi 1971 (1661) | Lost 1-2 | -171575 |
| 7sealed | 512 | Chen, Ting-FANG (1459) | Won 2-0 | +161591 |
| 8sealed | 213 | Mizumoto, Hirotaka (1673) | Won 2-0 | +201611 |
| 9sealed | 173 | Komatsu, Isamu (1596) | Lost 1-2 | -181593 |
| 10draft | 593 | Wada, Yusuke (1552) | Won 2-0 | +171610 |
| 11draft | 592 | Jinno, Kaname (1526) | Won 2-1 | +161626 |
| 12draft | 593 | Shingo, Tanaka (1629) | Lost 0-2 | -181608 |
| 13draft | 630 | Ishii, Masashi (1461) | Won 2-0 | +161624 |
| 14draft | 674 | Takeuchi, Shuuji (1560) | Lost 0-2 | -191605 |
| 15draft | 643 | Kokubun, Takeshi (1724) | Won 2-1 | +201625 |
| top | average opponent: 1564record: 10-5 | new rating: 1625 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 504 | Ono, Daisuke (1329) | Won 2-1 | +151510 |
| 3sealed | 269 | Hibino, Yasutaka (1665) | Lost 0-2 | -151495 |
| 4sealed | 718 | Schaben, Sid (1538) | Lost 0-2 | -181477 |
| 5sealed | 820 | Suzuki, Kei (1736) | Won 2-0 | +231500 |
| 6sealed | 417 | Hangyo, Tatsuya (1516) | Won 2-0 | +181518 |
| 7sealed | 446 | Komatsu, Isamu (1558) | Won 2-0 | +191537 |
| 8sealed | 351 | Hirano, Kosaku (1504) | Won 2-0 | +171554 |
| 9sealed | 234 | Yashiki, Kouichi (1459) | Won 2-1 | +171571 |
| 10draft | 274 | Ooneda, Yoshihiro (1649) | Lost 0-2 | -171554 |
| 11draft | 292 | Makino, Hiroyuki (1546) | Lost 0-2 | -181536 |
| 12draft | 115 | Yamamoto, Yuuya (1572) | Won 2-1 | +191555 |
| 13draft | 53 | Mori, Shotaro (1602) | Won 2-0 | +191574 |
| 14draft | 43 | Kozaki, Masahiro (1575) | Lost 0-2 | -181556 |
| 15draft | 34 | Harada, Dampei (1706) | Lost 1-2 | -161540 |
| top | average opponent: 1568record: 8-6 | new rating: 1540 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 365 | Kanda, Akihiro (1470) | Lost 1-2 | -181433 |
| 3standard | 1017 | Saeki, Tomoya (1497) | Won 2-0 | +201453 |
| 4standard | 760 | Yohara, Tosho (1525) | Won 2-0 | +191472 |
| 5standard | 217 | Hayasaki, Yusuke (1502) | Lost 0-2 | -171455 |
| 6standard | 408 | Ooshima, Shun (1486) | Won 2-1 | +181473 |
| 7standard | 297 | Ohno, Isao (1613) | Lost 0-2 | -151458 |
| 8standard | 404 | Maruyama, Nobuhiro (1474) | Won 2-0 | +181476 |
| 9standard | 371 | Kobata, Tomoaki (1526) | Won 2-1 | +191495 |
| top | average opponent: 1511record: 5-3 | new rating: 1495 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 1000 | Matsushita, Ryuuki (1567) | Lost 1-2 | -161448 |
| 3sealed | 1146 | Mimasu, Kei (1522) | Won 2-0 | +191467 |
| 4sealed | 965 | Hada, Nobuto (1558) | Lost 1-2 | -161451 |
| 5sealed | 1151 | Anker-Nilssen, Rasmus (1440) | Lost 1-2 | -181433 |
| 6sealed | 1115 | Yamagata, Shuhei (1447) | Won 2-0 | +181451 |
| top | average opponent: 1507record: 2-3 | new rating: 1451 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 704 | Emi, Shin'ichirou (1507) | Lost 0-2 | -171441 |
| 3modern | 1133 | Endoh, Hiroki (1522) | Won 2-1 | +201461 |
| 4modern | 825 | Yasuda, Ryouhei (1440) | Lost 1-2 | -191442 |
| 5modern | 984 | Matsuda, Yoshiaki (1482) | Won 2-1 | +191461 |
| 6modern | 917 | Sengan, Takashi (1498) | Won 2-0 | +191480 |
| 7modern | 901 | Sakai, Yuuichi (1528) | Lost 0-2 | -171463 |
| 8modern | 909 | Sim, Daryl (1481) | Won 1-0 | +181481 |
| 9modern | 862 | Kuga, Souta (1551) | Lost 1-2 | -171464 |
| top | average opponent: 1501record: 4-4 | new rating: 1464 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 618 | Ichii, Hiroaki (1500) | Won 2-0 | +181486 |
| 2sealed | 589 | Hasegawa, Tsuyoshi (1603) | Lost 0-2 | -161470 |
| 3sealed | 752 | Jeong, Hyunwoo (1724) | Won 2-0 | +231493 |
| 4sealed | 648 | Miyazono, Takeshi (1586) | Lost 1-2 | -161477 |
| 5sealed | 815 | Tazawa, Kazuho (1414) | Won 2-1 | +161493 |
| 6sealed | 726 | Funahashi, Shun (1538) | Lost 0-2 | -171476 |
| 7sealed | 710 | Nagata, Satoshi (1426) | Lost 1-2 | -191457 |
| 8sealed | 700 | Imai, Kimio (1489) | Won 2-1 | +191476 |
| 9sealed | 643 | Hashidume, Shintaro (1505) | Lost 1-2 | -181458 |
| top | average opponent: 1532record: 4-5 | new rating: 1458 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 232 | Bandou, Junichirou (1706) | Lost 1-2 | -131467 |
| 3sealed | 302 | Tamura, Yasuo (1433) | Won 2-0 | +171484 |
| 4sealed | 213 | Fukumoto, Nobuhiro (1456) | Won 2-0 | +171501 |
| 5sealed | 83 | Morikawa, Taichi (1647) | Lost 0-2 | -151486 |
| 6sealed | 266 | Hishida, Akinori (1460) | Lost 0-2 | -181468 |
| top | average opponent: 1540record: 2-3 | new rating: 1468 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 105 | Ootomo, Yuuki (1518) | Won 2-1 | +181529 |
| 3standard | 253 | Hiramatsu, Mamoru (1691) | Lost 0-2 | -151514 |
| 4standard | 401 | Wada, Kazunori (1473) | Lost 0-2 | -191495 |
| 5standard | 621 | Nakamura, Yuya (1487) | Won 2-1 | +181513 |
| 6standard | 456 | Yamamoto, Kouhei (1555) | Lost 0-2 | -171496 |
| 7standard | 476 | Takeuchi, Jun (1498) | Lost 0-2 | -181478 |
| 8standard | 363 | Shimizu, Yousuke (1619) | Lost 0-2 | -151463 |
| 9standard | 349 | Niwa, Ryuuta (1460) | Won 2-1 | +171480 |
| top | average opponent: 1538record: 3-5 | new rating: 1480 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 83 | Kaneko, Yoshiyuki (1680) | Won 2-0 | +221500 |
| 4modern | 41 | Nakata, Tatsuya (1538) | Won 2-1 | +181518 |
| 5modern | 11 | Suzuki, Taiki (1735) | Won 2-1 | +221540 |
| 6modern | 34 | Tsuchiya, Hideaki (1620) | Won 2-0 | +201560 |
| 7modern | 19 | Nose, Koji (1884) | Lost 1-2 | -131547 |
| 8modern | 62 | Hayashi, Masatake (1562) | Lost 0-2 | -171530 |
| 9modern | 66 | Fukuda, Yousuke (1494) | Lost 1-2 | -191511 |
| top | average opponent: 1645record: 4-3 | new rating: 1511 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 214 | Tukamoto, Takuya (1543) | Lost 1-2 | -171483 |
| 3sealed | 328 | Ikeda, Tomokazu (1446) | Lost 1-2 | -191464 |
| 4sealed | 380 | Tsuchida, Tatsuaki (1481) | Won 2-0 | +181482 |
| 5sealed | 356 | Yoshizumi, Tomohiro (1502) | Lost 1-2 | -171465 |
| 6sealed | 358 | Okamura, Kazuya (1390) | Won 2-1 | +161481 |
| 7sealed | 289 | Nakamura, Yoichi (1388) | Lost 1-2 | -191462 |
| 8sealed | 258 | Takahashi, Kazuya (1515) | Won 2-0 | +191481 |
| 9sealed | 191 | Yamano, Tatsuto (1333) | Draw 1-1 | -31478 |
| top | average opponent: 1450record: 3-4-1 | new rating: 1478 | ||