Mizutani, Naoki
Current rating: 1555
Record: 45-44 (GP) / 9-9 (professional)
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 481 | Han, Wang (1500) | Lost 0-2 | -201554 |
| 2sealed | 796 | Yoshida, Masafumi (1517) | Won 2-1 | +181572 |
| 3sealed | 932 | Seki, Keita (1714) | Lost 1-2 | -161556 |
| 4sealed | 958 | Nakazato, Yuta (1485) | Won 2-0 | +171573 |
| 5sealed | 823 | Sugizaki, Shunsuke (1573) | Lost 0-2 | -181555 |
| top | average opponent: 1558record: 2-3 | new rating: 1555 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1609 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 408 | Taya, Hironobu (1413) | Won 2-0 | +141623 |
| 2standard | 409 | Arahori, Kazuaki (1539) | Lost 1-2 | -191604 |
| 3standard | 1111 | Ashizawa, Yoshisato (1525) | Won 2-0 | +161620 |
| 4standard | 479 | Shibata, Masataka (1536) | Won 2-1 | +171637 |
| 5standard | 444 | Katagiri, Keisuke (1482) | Lost 1-2 | -211616 |
| 6standard | 824 | Fujimura, Kyuta (1474) | Lost 0-2 | -211595 |
| 7standard | 737 | Aoi, Masashi (1391) | Lost 0-2 | -211574 |
| top | average opponent: 1480record: 3-4 | new rating: 1574 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 887 | Iizuka, Shun (1612) | Won 2-0 | +181611 |
| 2sealed | 825 | Ishikawa, Sou (1464) | Won 2-1 | +161627 |
| 3sealed | 688 | Hirayama, Daisuke (1744) | Won 2-0 | +201647 |
| 4sealed | 712 | Nakatani, Hiroki (1627) | Won 2-0 | +171664 |
| 5sealed | 666 | Ushie, Yuuta (1773) | Lost 1-2 | -161648 |
| 6sealed | 743 | Hida, Yoshinori (1562) | Lost 1-2 | -191629 |
| 7sealed | 856 | Hashimoto, Tatsuki (1530) | Lost 0-2 | -201609 |
| top | average opponent: 1616record: 4-3 | new rating: 1609 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1604 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 23 | Arai, Ryou (1413) | Lost 1-2 | -221582 |
| 2modern | 591 | Kabeshita, Yoshito (1555) | Won 2-1 | +181600 |
| 3modern | 576 | Irie, Daiki (1500) | Won 2-1 | +161616 |
| 4modern | 317 | Hoshino, Yohei (1503) | Lost 1-2 | -201596 |
| 5modern | 339 | Komizo, Isao (1465) | Won 2-1 | +151611 |
| 6modern | 400 | Gan, Meng San (1579) | Lost 1-2 | -181593 |
| top | average opponent: 1503record: 3-3 | new rating: 1593 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 78 | Furukawa, Hiroki (1482) | Won 2-1 | +161624 |
| 3standard | 50 | Take, Toshiharu (1573) | Won 1-0 | +171641 |
| 4standard | 72 | Miyauchi, Makoto (1565) | Won 2-1 | +161657 |
| 5standard | 28 | Ikeda, Tsuyoshi (1645) | Won 2-0 | +181675 |
| 6standard | 13 | Nakano, Yoshitaka (1975) | Lost 1-2 | -131662 |
| 7standard | 247 | Suzuki, Keisuke (1558) | Lost 0-2 | -201642 |
| 8standard | 25 | Takagi, Takayuki (1560) | Lost 1-2 | -191623 |
| 9standard | 54 | Kobara, Shinji (1549) | Lost 1-2 | -191604 |
| top | average opponent: 1613record: 4-4 | new rating: 1604 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 14 | Watanabe, Yuuya (1551) | Won 2-1 | +161660 |
| 4block | 7 | Koyama, Kenta (1622) | Won 2-1 | +171677 |
| 5block | 28 | Sasaki, Yuusuke (1458) | Won 2-1 | +141691 |
| 6block | 9 | Yun, Suhan (1636) | Won 2-0 | +171708 |
| 7block | 1 | Ishida, Itaru (2016) | Lost 0-2 | -121696 |
| 8block | 11 | Nakamura, Shuhei (1988) | Lost 1-2 | -131683 |
| 9block | 29 | Katayama, Takahiro (1732) | Lost 1-2 | -171666 |
| 10block | 30 | Nakatani, Haruki (1610) | Lost 0-2 | -191647 |
| 11block | 32 | Natsume, Takuya (1519) | Lost 1-2 | -201627 |
| 12block | 32 | Toochika, Takayuki (1708) | Lost 0-2 | -171610 |
| 13block | 19 | Takasugi, Ryouta (1479) | Won 2-0 | +161626 |
| 14block | 28 | Hamamoto, Kenji (1634) | Lost 1-2 | -181608 |
| top | average opponent: 1663record: 5-7 | new rating: 1608 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 44 | Suzuki, Takaaki (1781) | Won 2-0 | +221575 |
| 3sealed | 47 | Higaki, Takao (1741) | Won 2-0 | +211596 |
| 4sealed | 14 | Tsuchiya, Heinrich (1633) | Won 2-0 | +191615 |
| 5sealed | 21 | Takakuwa, Akihiro (1793) | Won 2-1 | +211636 |
| 6sealed | 8 | Shibata, Toshiya (1672) | Won 2-1 | +191655 |
| 7sealed | 4 | Ishida, Itaru (1955) | Lost 0-2 | -131642 |
| 8sealed | 9 | Fukushima, Hirotomo (1578) | ID | 01642 |
| 9draft | 12 | Hanada, Yuu (1552) | Won 2-0 | +161658 |
| 10draft | 7 | Nonaka, Kentarou (1705) | Lost 0-2 | -171641 |
| 11draft | 18 | Ibamoto, Masami (1790) | Lost 0-2 | -151626 |
| 12draft | 1 | Iyanaga, Junya (1644) | Lost 1-2 | -181608 |
| 13draft | 23 | Tashiro, Yoshiaki (1658) | Won 2-1 | +191627 |
| 14draft | 15 | Hanada, Yuu (1549) | Won 2-0 | +171644 |
| top | average opponent: 1696record: 8-4-1 | new rating: 1644 | ||
| 2004 World Championship (mixed) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 12 | Au Yong, Wai Kin (1525) | Lost 0-2 | -181499 |
| 2standard | 134 | Zhang, Jingpeng (1495) | Won 2-1 | +181517 |
| 3standard | 84 | Ramos Da Fonseca, Dilson (1654) | Won 2-1 | +201537 |
| 4standard | 37 | Levy, Raphael (1945) | Lost 1-2 | -111526 |
| 5standard | 92 | Jardine, Julian (1514) | Won 2-0 | +181544 |
| 6standard | 69 | Kaskel, Brent (1604) | Lost 1-2 | -171527 |
| 7draft | 7 | Rafael, Miguel (1571) | Won 2-1 | +191546 |
| 8draft | 143 | McCarrel, Casey (1836) | Won 2-1 | +231569 |
| 9draft | 58 | Sonne, Jonathan (1878) | Lost 1-2 | -121557 |
| 10draft | 139 | Bornarel, Nicolas (1781) | Lost 0-2 | -141543 |
| 11draft | 124 | Boll, Soren (1581) | Lost 0-2 | -181525 |
| 12draft | 17 | Villarraga Ossa, Junes Abdul (1506) | Won 2-0 | +181543 |
| 13block | 84 | Kornis, Tamas (1507) | Won 2-0 | +171560 |
| 14block | 65 | Markovsky, Greg (1546) | Lost 1-2 | -181542 |
| 15block | 75 | Ramos, Luis [MEX] (1544) | Won 2-1 | +181560 |
| 16block | 61 | Edel, Willy (1534) | Lost 0-2 | -181542 |
| 17block | 77 | De Rosa, Antonino (1841) | Won 2-0 | +231565 |
| 18block | 63 | Berkowitz, Jordan (1909) | Lost 0-2 | -121553 |
| top | average opponent: 1654record: 9-9 | new rating: 1553 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 55 | Takesue, Chikara (1518) | Won 2-1 | +171555 |
| 4standard | 43 | Tanaka, Yoshimitsu (1462) | Lost 0-2 | -191536 |
| 5standard | 158 | Jinbu, Yousuke (1481) | Lost 1-2 | -191517 |
| 6standard | 147 | Hasegawa, Hironobu (1518) | Won 2-1 | +181535 |
| 7standard | 148 | Narumiya, Ryuuma (1546) | Lost 0-2 | -181517 |
| top | average opponent: 1505record: 2-3 | new rating: 1517 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 115 | Ogawa, Syunsuke (1687) | Won 2-0 | +211532 |
| 3sealed | 4 | Ikeda, Akio (1569) | Won 2-1 | +191551 |
| 4sealed | 38 | Ota, Yusuke (1646) | Won 2-0 | +191570 |
| 5sealed | 19 | Hiraki, Kazuhiro (1574) | Lost 1-2 | -181552 |
| 6sealed | 36 | Fukuchi, Takahiro (1682) | Lost 1-2 | -151537 |
| 7sealed | 67 | Kagamihata, Atsushi (1560) | Won 2-0 | +181555 |
| 8sealed | 55 | Yamazaki, Yuuki (1579) | Lost 1-2 | -171538 |
| top | average opponent: 1614record: 4-3 | new rating: 1538 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 59 | Katayama, Hidenori (1456) | Lost 1-2 | -191501 |
| 5block | 86 | Sutou, Takuo (1499) | Lost 0-2 | -181483 |
| 6block | 215 | Hiraga, Mikio (1517) | Won 2-0 | +181501 |
| 7block | 159 | Nakatani, Hiroshi (1588) | Lost 0-2 | -161485 |
| 8block | 178 | Imai, Kimio (1551) | Won 2-0 | +191504 |
| 9block | 104 | Oohira, Kenta (1508) | Won 2-1 | +181522 |
| 10block | 64 | Kajiyama, Ryuta (1553) | Won 2-0 | +191541 |
| 11block | 58 | Ueno, Kazuki (1687) | Lost 0-2 | -161525 |
| 12block | 81 | Taguchi, Hironori (1557) | Lost 1-2 | -171508 |
| 13block | 80 | Kobayashi, Masanori(Aichi) (1528) | Won 2-1 | +181526 |
| 14block | 70 | Murakami, Yuuki (1632) | Lost 0-2 | -161510 |
| 15block | 63 | Izumi, Shinji (1519) | Won 2-1 | +181528 |
| 16block | 53 | Miwa, Tatsuya (1552) | Lost 0-2 | -171511 |
| top | average opponent: 1550record: 6-7 | new rating: 1511 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 236 | Kobata, Tetsuro (1500) | Lost 0-2 | -181482 |
| 3block | 313 | Kaminaga, Koichi (1500) | Won 2-0 | +181500 |
| 4block | 312 | Tanimura, Shuta (1518) | Won 2-1 | +191519 |
| 5block | 260 | Moriyama, Dai (1506) | Won 2-0 | +171536 |
| 6block | 108 | Furuichi, Takenori (1553) | Lost 0-2 | -171519 |
| 7block | 232 | Matsui, Kengaku (1566) | Lost 0-2 | -171502 |
| 8block | 197 | Yanagawa, Masaru (1517) | Won 2-1 | +181520 |
| top | average opponent: 1523record: 4-3 | new rating: 1520 | ||