Kozaki, Yosuke
Current rating: 1666
Record: 63-61-3
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Ishii, Hayato (1804) | Won 2-0 | +221592 |
| 2sealed | 102 | Nakatani, Masaya (1518) | Won 2-1 | +171609 |
| 3sealed | 64 | Aoki, Yoshitsugu (1803) | Won 2-1 | +211630 |
| 4sealed | 157 | Oshimi, Akira (1522) | Won 2-0 | +161646 |
| 5sealed | 60 | Dadyko, Alexander (1628) | Won 2-1 | +181664 |
| 6sealed | 49 | Hibino, Yasutaka (1735) | Lost 1-2 | -171647 |
| 7sealed | 77 | Nakao, Motohiko (1863) | Lost 1-2 | -141633 |
| 8sealed | 161 | Kasahara, Takuya (1737) | Won 2-0 | +201653 |
| 9sealed | 95 | Ma, Geoffrey (1578) | Won 2-1 | +171670 |
| 10draft | 155 | Nakamura, Keisuke (1760) | Lost 0-2 | -171653 |
| 11draft | 68 | Fujita, Osamu (1798) | Won 2-1 | +211674 |
| 12draft | 200 | Ikawa, Yoshihiko (2031) | Lost 1-2 | -121662 |
| 13draft | 188 | Karasawa, Ryuichi (1847) | Lost 0-2 | -151647 |
| 14draft | 108 | Hiroi, Genki (1674) | Won 2-1 | +191666 |
| top | average opponent: 1736record: 9-5 | new rating: 1666 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 360 | Aranami, Naoto (1516) | Lost 0-2 | -181504 |
| 2sealed | 723 | Ozawa, Akihito (1480) | Won 2-1 | +181522 |
| 3sealed | 592 | Takashima, Ryuichi (1452) | Won 2-1 | +161538 |
| 4sealed | 288 | Hamada, Junji (1615) | Won 2-1 | +201558 |
| 5sealed | 287 | Nakata, Yuusaku (1706) | Lost 1-2 | -151543 |
| 6sealed | 572 | Koyama, Yuji (1797) | Won 2-0 | +221565 |
| 7sealed | 226 | Lee, Hung (1645) | Won 2-1 | +201585 |
| 8sealed | 321 | Wu, Xuan (1765) | Lost 1-2 | -151570 |
| top | average opponent: 1622record: 5-3 | new rating: 1570 | ||
| Grand Prix Beijing 2017 (AKH limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 200 | Ju, Xiaobin (1513) | Won 2-1 | +181556 |
| 4sealed | 14 | Yao, Minglei (1668) | Lost 0-2 | -161540 |
| 5sealed | 86 | Pan, Yude (1491) | Won 2-1 | +171557 |
| 6sealed | 43 | Zheng, Haiming (1578) | Draw 1-1 | 01557 |
| 7sealed | 98 | Liu, Tianyu (1448) | Lost 1-2 | -201537 |
| 8sealed | 165 | Xu, Bin (1694) | Lost 1-2 | -151522 |
| top | average opponent: 1565record: 2-3-1 | new rating: 1522 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 140 | Nagao, Yasutaka (1696) | Lost 1-2 | -161566 |
| 4standard | 246 | Chen, Liang (1750) | Lost 0-2 | -151551 |
| 5standard | 284 | Seo, Kenta (1572) | Won 2-0 | +181569 |
| 6standard | 207 | Hirami, Tomonori (1856) | Lost 1-2 | -131556 |
| 7standard | 223 | Huang, Tsai-Wei (1553) | Lost 1-2 | -181538 |
| top | average opponent: 1686record: 1-4 | new rating: 1538 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 659 | Yoshizawa, Masaru (1676) | Won 2-0 | +191610 |
| 4standard | 221 | Yokoyama, Itaru (1717) | Lost 1-2 | -161594 |
| 5standard | 252 | Machida, Naochika (1538) | Won 2-0 | +171611 |
| 6standard | 220 | Takesue, Chikara (1716) | Lost 1-2 | -161595 |
| 7standard | 666 | Sugiyama, Kouichi (1578) | Lost 1-2 | -181577 |
| 8standard | 761 | Ogino, Junpei (1561) | Won 2-1 | +171594 |
| 9standard | 403 | Ramis Pascual, Toni (1887) | Lost 1-2 | -121582 |
| top | average opponent: 1667record: 3-4 | new rating: 1582 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1626 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 88 | Toriuchi, Daizo (1603) | Lost 1-2 | -181608 |
| 4sealed | 799 | Tamura, Ryo (1767) | Lost 1-2 | -151593 |
| 5sealed | 596 | Ninagawa, Hidetoshi (1483) | Won 2-1 | +161609 |
| 6sealed | 554 | Imagawa, Hiromasa (1828) | Lost 0-2 | -141595 |
| 7sealed | 660 | Mishiro, Norihito (1501) | Won 2-0 | +161611 |
| 8sealed | 642 | Matushita, Masakazu (1488) | Lost 0-2 | -201591 |
| top | average opponent: 1612record: 2-4 | new rating: 1591 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 381 | Takaoka, Yusuke (1575) | Won 2-0 | +171623 |
| 4standard | 218 | Chiba, Akio (2007) | Lost 0-2 | -111612 |
| 5standard | 363 | Sashida, Tomoro (1410) | Won 2-1 | +141626 |
| 6standard | 249 | Araki, Tatsunori (1536) | Lost 0-2 | -191607 |
| 7standard | 240 | Koyama, Yuji (1699) | Won 2-1 | +191626 |
| 8standard | 295 | Iida, Kazuhito (1566) | Won 2-0 | +171643 |
| 9standard | 197 | Nitta, Yuki (1780) | Won 2-1 | +211664 |
| 10standard | 128 | Mikami, Yoshirou (1599) | Won 2-0 | +171681 |
| 11standard | 87 | Takao, Shota (1876) | Lost 1-2 | -151666 |
| 12standard | 99 | Okada, Motohiro (1571) | Lost 0-2 | -201646 |
| 13standard | 98 | Yokomizo, Gouki (1523) | Lost 0-2 | -201626 |
| top | average opponent: 1649record: 6-5 | new rating: 1626 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 875 | Lu, Tung Ken (1487) | Won 2-1 | +171539 |
| 4sealed | 854 | Yanada, Kenji (1628) | Lost 1-2 | -161523 |
| 5sealed | 910 | Inoue, Daisuke (1473) | Won 2-1 | +171540 |
| 6sealed | 928 | Kadota, Shinichi (1580) | Lost 0-2 | -171523 |
| 7sealed | 954 | Okami, Motoyosi (1474) | Won 2-0 | +171540 |
| 8sealed | 897 | Tucci, Joel (1554) | Won 2-1 | +181558 |
| 9sealed | 882 | Terawaki, Koji (1558) | Won 2-1 | +181576 |
| 10draft | 143 | Nakamura, Keisuke (1687) | Lost 0-2 | -161560 |
| 11draft | 117 | Wu, Chia Yin (1645) | Lost 0-2 | -161544 |
| 12draft | 7 | Oosawa, Yuki (1516) | Won 2-1 | +171561 |
| 13draft | 24 | Chiba, Akio (2044) | Won 2-0 | +261587 |
| 14draft | 58 | Hirabayashi, Yuki1029 (1614) | Won 2-0 | +191606 |
| 15draft | 102 | Sasaki, Yuuki (1600) | ID | 01606 |
| top | average opponent: 1605record: 8-4-1 | new rating: 1606 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 664 | Asakura, Takumi (1404) | Lost 0-2 | -211541 |
| 4legacy | 623 | Kubo, Yuuta (1569) | Won 2-1 | +181559 |
| 5legacy | 602 | Hangyo, Tatsuya (1530) | Lost 0-2 | -181541 |
| 6legacy | 702 | Ichino, Takahito (1502) | Lost 0-2 | -191522 |
| top | average opponent: 1501record: 1-3 | new rating: 1522 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1546 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 136 | Ohta, Yusuke (1557) | Won 2-0 | +181564 |
| 4sealed | 58 | Iso, Toshiharu (1522) | Won 2-0 | +171581 |
| 5sealed | 30 | Aoki, Takuya (1570) | Lost 0-2 | -181563 |
| 6sealed | 91 | Yamamoto, Tsuyoshi (1556) | Won 2-0 | +181581 |
| 7sealed | 27 | Okumura, Masashi (1529) | Draw 1-1 | -11580 |
| 8sealed | 47 | Harane, Kenta (1565) | Lost 0-2 | -181562 |
| top | average opponent: 1550record: 3-2-1 | new rating: 1562 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 869 | Hino, Yoshiaki (1584) | Lost 0-2 | -181535 |
| 4modern | 854 | Okada, Takuya (1763) | Won 2-1 | +231558 |
| 5modern | 765 | Sasaki, Shun (1537) | Won 2-1 | +171575 |
| 6modern | 747 | Farnung, Ian (1837) | Lost 0-2 | -131562 |
| 7modern | 896 | Kondou, Masayuki (1505) | Lost 1-2 | -191543 |
| 8modern | 895 | Inoue, Hiroyuki (1545) | Won 2-0 | +181561 |
| 9modern | 849 | Kumagai, Riku (1725) | Lost 1-2 | -151546 |
| top | average opponent: 1642record: 3-4 | new rating: 1546 | ||
| Grand Prix Taipei 2014 (M15 limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 31 | Lam, Cheuk Hin (1518) | Won 2-0 | +201453 |
| 3sealed | 166 | Flanity, Nai (1536) | Won 2-0 | +191472 |
| 4sealed | 41 | Tsai, Po Cyuan (1608) | Won 2-0 | +211493 |
| 5sealed | 8 | Yu, Hung-Yi (1735) | Lost 0-2 | -141479 |
| 6sealed | 91 | Dizon, Aaron James (1572) | Won 2-1 | +201499 |
| 7sealed | 23 | De Rosa, Antonino (1923) | Won 2-0 | +251524 |
| 8sealed | 23 | Chang, Calvin (1602) | Won 2-1 | +201544 |
| 9sealed | 19 | Su, Yi J J (1556) | Won 2-1 | +181562 |
| 10draft | 50 | Chan, Ming Kin (1595) | Lost 1-2 | -171545 |
| 11draft | 11 | Chu, Jimmy (1607) | Lost 1-2 | -171528 |
| 12draft | 55 | Sato, Kimihiko (1794) | Won 2-0 | +221550 |
| 13draft | 52 | Sun, Wei-Hsiang (1626) | Lost 1-2 | -161534 |
| 14draft | 53 | Li, Gang Ying (1595) | Won 2-1 | +191553 |
| 15draft | 21 | Wee, Pang Ming (1743) | ID | 01553 |
| top | average opponent: 1644record: 9-4-1 | new rating: 1553 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 99 | Kawada, Naoki (1519) | Won 2-1 | +191483 |
| 3standard | 38 | Nishio, Yoshihiro (1403) | Lost 1-2 | -191464 |
| 4standard | 153 | Ozawa, Takahiro (1701) | Lost 1-2 | -141450 |
| 5standard | 237 | Arai, Yuuki (1523) | Lost 1-2 | -171433 |
| top | average opponent: 1536record: 1-3 | new rating: 1433 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 130 | Kuo, Tzu-Ching (1809) | Lost 1-2 | -121452 |
| 5standard | 112 | Matsumoto, Yuki2978 (1866) | Lost 0-2 | -101442 |
| 6standard | 282 | Kameyama, Takeshi (1605) | Won 2-0 | +211463 |
| 7standard | 230 | Cho, Won-Jun (1504) | Lost 0-2 | -181445 |
| 8standard | 226 | Takahashi, Katsumi (1479) | Draw 1-1 | +11446 |
| 9standard | 212 | Okishige, Kazumi (1471) | Won 2-1 | +181464 |
| top | average opponent: 1622record: 2-3-1 | new rating: 1464 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 943 | Takemura, Kazunori (1473) | Lost 1-2 | -181463 |
| 2sealed | 986 | Wolfe, Josh (1448) | Won 2-0 | +181481 |
| 3sealed | 850 | Takasugi, Tomoki (1491) | Lost 1-2 | -181463 |
| 4sealed | 1014 | Nakajima, Shota (1486) | Won 2-1 | +181481 |
| 5sealed | 960 | Isogami, Kazuma (1540) | Lost 0-2 | -171464 |
| top | average opponent: 1487record: 2-3 | new rating: 1464 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 130 | Takao, Naoki (1500) | Lost 1-2 | -181483 |
| 2standard | 488 | Yamazaki, Taichirou (1483) | Won 2-0 | +181501 |
| 3standard | 637 | Kimoto, Keiya (1449) | Lost 0-2 | -191482 |
| 4standard | 638 | Imamura, Norihide (1438) | Won 2-0 | +171499 |
| 5standard | 542 | Ambrose, Keith (1500) | Won 2-1 | +181517 |
| 6standard | 389 | Fujimoto, Tomoya (1513) | Lost 0-2 | -181499 |
| 7standard | 389 | Tamai, Toshimasa (1498) | Lost 0-2 | -181481 |
| top | average opponent: 1483record: 3-4 | new rating: 1481 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 6 | Onizuka, Hiroshi (1480) | Lost 0-2 | -181482 |
| 2standard | 274 | Shirotori, Ryousuke (1552) | Won 2-0 | +191501 |
| 3standard | 141 | Kawaguchi, Takahiro (1471) | Won 2-1 | +171518 |
| 4standard | 138 | Koyama, Yuji (1570) | Won 2-0 | +191537 |
| 5standard | 79 | Nakata, Hoshi (1540) | Lost 0-2 | -181519 |
| 6standard | 230 | Goto, Daiki (1501) | Lost 0-2 | -181501 |
| top | average opponent: 1519record: 3-3 | new rating: 1501 | ||