Aizawa, Keiji
Current rating: 1813 (#1895)
Record: 76-49-10 (GP) / 2-6 (professional)
Grand Prix Yokohama 2003Grand Prix Shizuoka 2003Pro Tour Kobe 2004Grand Prix Sendai 2004Grand Prix Nagoya 2004Grand Prix Yokohama 2004Grand Prix Matsuyama 2005Grand Prix Kyoto 2007Grand Prix Kobe 2008Grand Prix Yokohama 2010Grand Prix Yokohama 2013Grand Prix Shizuoka 2013Grand Prix Kobe 2014Grand Prix Tokyo 2016Grand Prix Chiba 2016
| Grand Prix Chiba 2016 (legacy) | starting rating: 1853 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 132 | Nishikawa, Tatsuya 3651 (1500) | Won 2-0 | +121865 |
| 4legacy | 159 | Hamachiyo, Takahiro (1506) | Lost 1-2 | -241841 |
| 5legacy | 490 | Chen, Steven (1469) | Lost 1-2 | -251816 |
| 6legacy | 619 | Fujiwara, Takahito (1553) | Won 2-1 | +141830 |
| 7legacy | 401 | Shibata, Takahiro (1484) | Won 2-0 | +121842 |
| 8legacy | 265 | Seito, Kazuki (1560) | Won 2-1 | +131855 |
| 9legacy | 80 | Iijima, Shin (1577) | Lost 1-2 | -231832 |
| 10legacy | 356 | Asai, Ikuya (1728) | Won 2-1 | +161848 |
| 11legacy | 225 | Fujita, Osamu (1810) | Won 2-1 | +171865 |
| 12legacy | 91 | Murakami, Kazuya3837 (1720) | Won 2-1 | +151880 |
| 13legacy | 92 | Tsubouchi, Tomoya (1659) | Lost 0-2 | -211859 |
| 14legacy | 114 | Samejima, Ippei (1602) | Lost 1-2 | -231836 |
| 15legacy | 149 | Hirosawa, Yuuichirou (1579) | Lost 0-2 | -231813 |
| top | average opponent: 1596record: 7-6 | new rating: 1813 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1767 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 219 | Akase, Daisuke (1473) | Won 2-1 | +121779 |
| 4standard | 282 | Iwamoto, Nobuyuki (1839) | Won 2-0 | +191798 |
| 5standard | 92 | Kawasaki, Hirotaka (1699) | Won 2-1 | +171815 |
| 6standard | 17 | Okudera, Taichi (1671) | Won 2-0 | +151830 |
| 7standard | 3 | Tan, Raymond (1986) | Lost 0-2 | -151815 |
| 8standard | 52 | Ichinohe, Yujiro (1524) | Won 2-1 | +131828 |
| 9standard | 53 | Shimizu, Toshiki (1713) | Lost 0-2 | -201808 |
| 10standard | 127 | Takahashi, Eiji (1511) | Lost 1-2 | -241784 |
| 11standard | 295 | Poh, Liang Choong (1710) | Won 2-1 | +171801 |
| 12standard | 149 | Gondo, Kosuke (1574) | Draw 1-1 | -41797 |
| 13standard | 146 | Shigehara, Toshinori (1918) | Won 2-0 | +201817 |
| 14standard | 110 | Wentao, Qi (1838) | Won 2-0 | +181835 |
| 15standard | 63 | Matsui, Hisataka (1826) | Won 2-0 | +181853 |
| top | average opponent: 1714record: 9-3-1 | new rating: 1853 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1716 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 113 | Dorsey, Brooks (1656) | Won 2-1 | +171733 |
| 4modern | 59 | Hamamura, Ryudou (1560) | Won 2-1 | +151748 |
| 5modern | 54 | Yamamuro, Yuusuke (1423) | Won 2-0 | +121760 |
| 6modern | 72 | Hirosawa, Yuuta (1772) | Lost 1-2 | -181742 |
| 7modern | 92 | Suganuma, Takayuki (1646) | Won 2-1 | +161758 |
| 8modern | 89 | Yamano, Tatsuto (1324) | Won 2-1 | +111769 |
| 9modern | 59 | Mizoue, Atsushi (1608) | Won 2-0 | +151784 |
| 10modern | 26 | Ichikawa, Yuuki (2069) | Lost 1-2 | -131771 |
| 11modern | 32 | Tani, Chiharu (1515) | Won 2-1 | +131784 |
| 12modern | 13 | Umeno, Kengo (1860) | Lost 1-2 | -161768 |
| 13modern | 64 | Mihara, Makihito (1879) | Lost 0-2 | -161752 |
| 14modern | 63 | Hayakawa, Sho (1568) | Won 2-0 | +151767 |
| 15modern | 37 | Tachibana, Kentarou (1575) | ID | 01767 |
| top | average opponent: 1650record: 8-4-1 | new rating: 1767 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1676 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 188 | Urano, Megumi (1477) | Won 2-0 | +151691 |
| 3standard | 157 | Horiuchi, Tatsuya (1535) | Won 2-1 | +151706 |
| 4standard | 75 | Chiba, Akio (1878) | Won 2-0 | +211727 |
| 5standard | 47 | Saitou, Ippei (1617) | Won 2-0 | +161743 |
| 6standard | 11 | Tan, Raymond (1875) | Won 2-0 | +201763 |
| 7standard | 2 | Yamao, Kazuhito (1550) | Won 2-0 | +141777 |
| 8standard | 7 | Takaku, Takeshi (1575) | Draw 1-1 | -31774 |
| 9standard | 148 | Takano, Masaki (1647) | Lost 0-2 | -201754 |
| 10standard | 30 | Shimono, Tetsuro (1635) | Won 2-1 | +151769 |
| 11standard | 16 | Mori, Katsuhiro (2015) | Won 2-0 | +231792 |
| 12standard | 8 | Miyake, Kyohei (1572) | Lost 0-2 | -221770 |
| 13standard | 26 | Yamamoto, Kentaro (2069) | Lost 0-2 | -131757 |
| 14standard | 46 | Muranaka, Hiroya (1637) | Lost 0-2 | -201737 |
| 15standard | 64 | Choi, Seung-Muk (1561) | Lost 1-2 | -211716 |
| top | average opponent: 1689record: 8-5-1 | new rating: 1716 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1657 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 793 | Sekine, Tadatoshi (1518) | Lost 0-2 | -201637 |
| 3sealed | 1010 | Nagao, Yasutaka (1500) | Won 2-1 | +151652 |
| 4sealed | 820 | Nakamura, Yuichiro (1513) | Won 2-1 | +161668 |
| 5sealed | 764 | Suzuki, Masahiro 7609 (1504) | Won 2-0 | +151683 |
| 6sealed | 694 | Horiguchi, Kenichi (1554) | Lost 0-2 | -211662 |
| 7sealed | 759 | Kinoshita, Tomohiro (1601) | Lost 0-2 | -191643 |
| 8sealed | 996 | Kawano, Junya (1588) | Won 2-1 | +171660 |
| 9sealed | 946 | Takeda, Kazuki (1543) | Won 2-0 | +161676 |
| top | average opponent: 1540record: 5-3 | new rating: 1676 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1669 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 8 | Urata, Takurou (1572) | Lost 1-2 | -191650 |
| 3extended | 265 | Fukumoto, Hiroaki (1500) | Won 2-0 | +151665 |
| 4extended | 285 | Inamura, Sachio (1518) | Won 2-0 | +151680 |
| 5extended | 181 | Motomura, Shigeru (1687) | Won 2-0 | +181698 |
| 6extended | 63 | Kobayashi, Takuto (1558) | Lost 0-2 | -201678 |
| 7extended | 128 | Ikeda, Kazuki (1538) | Lost 1-2 | -211657 |
| top | average opponent: 1562record: 3-3 | new rating: 1657 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1701 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 14 | Chijimi, Keiichi (1646) | Draw 1-1 | -11700 |
| 3block | 129 | Kataoka, Asami (1548) | Lost 1-2 | -211679 |
| 4block | 249 | Yamada, Yasuo (1409) | Lost 0-2 | -231656 |
| 5block | 302 | Higashida, Keita (1520) | Won 2-1 | +161672 |
| 6block | 236 | Tatsumi, Kouji (1534) | Won 2-0 | +151687 |
| 7block | 168 | Aoki, Kazuya (1696) | Lost 0-2 | -181669 |
| top | average opponent: 1559record: 2-3-1 | new rating: 1669 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1668 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 32 | Asahara, Akira (2027) | Won 2-0 | +241692 |
| 5standard | 21 | Nabeta, Makoto (1518) | Draw 1-1 | -31689 |
| 6standard | 29 | Nishiwaki, Kazuhisa (1660) | Lost 1-2 | -191670 |
| 7standard | 63 | Nakamura, Naomichi (1555) | Won 2-1 | +161686 |
| 8standard | 42 | Aoki, Kazuya (1718) | Won 2-0 | +191705 |
| 9standard | 26 | Hirabayashi, Kazuya (1781) | Won 2-0 | +191724 |
| 10standard | 22 | Nakamura, Yuichiro (1594) | Lost 0-2 | -201704 |
| 11standard | 6 | Matsushita, Masakazu (1752) | Draw 1-1 | +11705 |
| 12standard | 10 | Furukawa, Ken'ichi (1723) | Won 2-0 | +181723 |
| 13standard | 19 | Inoue, Toru (1626) | Draw 1-1 | -21721 |
| 14standard | 38 | Nomura, Masahiro (1584) | Lost 1-2 | -201701 |
| top | average opponent: 1685record: 5-3-3 | new rating: 1701 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1699 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 42 | Nakamura, Sou (1446) | Won 2-0 | +141713 |
| 2sealed | 32 | Kudo, Koichi (1547) | Lost 1-2 | -211692 |
| 3sealed | 114 | Nakaya, Makoto (1520) | Won 2-1 | +151707 |
| 4sealed | 125 | Omasa, Yoshitaka (1452) | Lost 1-2 | -231684 |
| 5sealed | 129 | Hassaku, Jinpei (1769) | Lost 0-2 | -161668 |
| top | average opponent: 1547record: 2-3 | new rating: 1668 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 112 | Maruyama, Takaaki (1523) | Won 2-1 | +161668 |
| 3sealed | 83 | Takayama, Kenta (1535) | Won 2-0 | +151683 |
| 4sealed | 15 | Iizuka, Shun (1718) | Won 2-0 | +191702 |
| 5sealed | 35 | Takakuwa, Akihiro (1774) | Lost 0-2 | -171685 |
| 6sealed | 66 | Nishino, Kenta (1617) | Lost 0-2 | -191666 |
| 7sealed | 117 | Morofuji, Takuma (1672) | Won 2-1 | +181684 |
| 8sealed | 22 | Uchida, Kensuke (1521) | Won 2-1 | +151699 |
| top | average opponent: 1623record: 5-2 | new rating: 1699 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 40 | Yamabe, Tadayoshi (1500) | Draw 1-1 | -11572 |
| 4standard | 117 | Nishihara, Hiroki (1502) | Won 2-1 | +171589 |
| 5standard | 59 | Watanabe, Yuuya (1537) | Draw 0-0 | -11588 |
| 6standard | 130 | Hirayama, Daisuke (1519) | Lost 0-2 | -191569 |
| 7standard | 196 | Suginaka, Toshio (1523) | Won 2-0 | +171586 |
| 8standard | 134 | Kikuchi, Osamu (1516) | Won 2-0 | +161602 |
| 9standard | 90 | Takahashi, Keiji (1528) | Won 2-1 | +171619 |
| 10standard | 32 | Kojima, Yoshimasa (1623) | Won 2-1 | +181637 |
| 11standard | 59 | Honnami, Tomoyuki (1579) | Won 2-1 | +171654 |
| 12standard | 41 | Nakajima, Tomoya (1688) | Lost 1-2 | -171637 |
| 13standard | 23 | Itou, Takuma (1581) | Won 2-1 | +171654 |
| 14standard | 47 | Kurimoto, Hidenori (1618) | Won 2-1 | +171671 |
| 15standard | 17 | Michiba, Ryouta (1623) | Lost 0-2 | -191652 |
| top | average opponent: 1564record: 8-3-2 | new rating: 1652 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 13 | Matsumura, Takehiko (1554) | Won 2-1 | +201496 |
| 3sealed | 28 | Maruyama, Tomohiro (1676) | Won 2-0 | +211517 |
| 4sealed | 35 | Mitsuhashi, Takashi (1674) | Won 2-0 | +211538 |
| 5sealed | 2 | Lee, Sang-Ryeol (1698) | Won 1-0 | +211559 |
| 6sealed | 2 | Asahara, Akira (1913) | Lost 0-2 | -121547 |
| 7sealed | 18 | Ueda, Katsuya (1707) | Won 2-1 | +211568 |
| 8sealed | 8 | Saito, Tomoharu (1690) | Lost 0-2 | -161552 |
| 9draft | 28 | Hashimoto, Yuu (1557) | Won 2-0 | +181570 |
| 10draft | 1 | Ruel, Antoine (1989) | Lost 0-2 | -111559 |
| 11draft | 31 | Iwai, Tsuyoshi (1702) | Won 2-1 | +211580 |
| 12draft | 15 | Kato, Kazuki (1857) | Lost 1-2 | -131567 |
| 13draft | 24 | Ruel, Olivier (1955) | Lost 0-2 | -111556 |
| 14draft | 20 | Hashimoto, Yuu (1545) | Won 2-1 | +171573 |
| top | average opponent: 1732record: 8-5 | new rating: 1573 | ||
| Pro Tour Kobe 2004 (Mirrodin block) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 34 | Baberowski, Dirk (1826) | Lost 1-2 | -121500 |
| 2block | 97 | Nassif, Gabriel (2110) | Lost 0-2 | -81492 |
| 3block | 92 | Shiki, Kazumasa (1808) | Lost 0-2 | -131479 |
| 4block | 116 | Horvath, Adam (1789) | Lost 0-2 | -121467 |
| 5block | 111 | Guevin, Thomas (1846) | Lost 0-2 | -121455 |
| 6block | 106 | Hosaka, Wataru (1399) | Won 2-0 | +171472 |
| 7block | 94 | Samsonoff, Stephane (1479) | Won 2-0 | +181490 |
| 8block | 88 | Grace, Richard (1708) | Lost 0-2 | -141476 |
| top | average opponent: 1746record: 2-6 | new rating: 1476 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Anan, Go (1571) | Lost 0-2 | -161448 |
| 2sealed | 293 | Akiyama, Hayato (1463) | Won 2-0 | +181466 |
| 3sealed | 240 | Niwa, Toshiharu (1676) | Won 2-0 | +221488 |
| 4sealed | 173 | Niwa, Kohei (1563) | Won 2-0 | +191507 |
| 5sealed | 50 | Mihara, Makihito (1685) | Won 2-1 | +221529 |
| 6sealed | 54 | Shimizu, Junji (1611) | Lost 1-2 | -171512 |
| top | average opponent: 1595record: 4-2 | new rating: 1512 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 102 | Fujikura, Iori (1500) | Lost 1-2 | -181482 |
| 2block | 233 | Wakamatu, Isao (1482) | Lost 0-2 | -181464 |
| 3block | 371 | Ishiduka, Hazime (1464) | Won 2-1 | +181482 |
| 4block | 275 | Yamaguchi, Yasutaka (1486) | Draw 1-1 | 01482 |
| 5block | 302 | Shimamura, Masatoshi (1468) | Won 2-1 | +181500 |
| 6block | 240 | Murakami, Yuki (Osaka) (1510) | Draw 1-1 | 01500 |
| 7block | 254 | Ogo, Yoshinori (1503) | Lost 0-2 | -181482 |
| 8block | 240 | Iwasaki, Eiji (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1487record: 2-4-2 | new rating: 1464 | ||