Maehata, Yasuhito
Current rating: 1755 (#3642)
Record: 47-30-3
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1688 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 308 | Okubo, Katsuya (1484) | Won 0-0 | +141702 |
| 2sealed | 97 | Baba, Yasunori (1598) | Won 2-1 | +161718 |
| 3sealed | 85 | Kobayashi, Takahito (1507) | Won 2-1 | +151733 |
| 4sealed | 19 | Itagaki, Masayoshi (1610) | Won 2-0 | +151748 |
| 5sealed | 39 | Tanahashi, Masayasu (1771) | Won 2-1 | +191767 |
| 6sealed | 16 | Kishigami, Osamu (1540) | Won 2-1 | +141781 |
| 7sealed | 120 | Arahori, Kazuaki (1701) | Won 2-0 | +161797 |
| 8sealed | 133 | Mihara, Makihito (2060) | Lost 1-2 | -131784 |
| 9draft | 8 | Wafo-Tapa, Guillaume (1978) | Lost 0-2 | -141770 |
| 10draft | 29 | Yamada, Hiroki (1641) | Won 2-1 | +151785 |
| 11draft | 6 | Kumoura, Daisuke (1646) | Won 2-0 | +161801 |
| 12draft | 24 | Ikeda, Tsuyoshi (1836) | Lost 0-2 | -181783 |
| 13draft | 10 | Asahara, Akira (1938) | Lost 0-2 | -151768 |
| 14draft | 16 | Nakamura, Shuhei (2066) | Lost 1-2 | -131755 |
| top | average opponent: 1741record: 9-5 | new rating: 1755 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1664 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Sakamoto, Takurou (1500) | Won 2-1 | +151679 |
| 2sealed | 53 | Yamane, Masahiro (1466) | Won 2-0 | +141693 |
| 3sealed | 8 | Hanaoka, Toshifumi (1646) | Won 2-1 | +181711 |
| 4sealed | 42 | Ikeda, Tsuyoshi (1830) | Won 2-0 | +201731 |
| 5sealed | 6 | Yamano, Tomoya (1688) | Lost 0-2 | -191712 |
| 6sealed | 17 | Uematsu, Kouichi (1561) | Lost 0-2 | -211691 |
| 7sealed | 97 | Takasugi, Ryouta (1545) | Lost 1-2 | -201671 |
| 8sealed | 3 | Kai, Tsubasa (1641) | Won 2-1 | +171688 |
| top | average opponent: 1610record: 5-3 | new rating: 1688 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1678 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 69 | Ninomiya, Yukio (1448) | Won 2-1 | +141692 |
| 2sealed | 14 | Tamai, Katsuyoshi (1504) | Lost 0-2 | -211671 |
| 3sealed | 95 | Okamoto, Masahiro (1485) | Won 2-1 | +141685 |
| 4sealed | 94 | Ueyama, Yuji (1520) | Lost 1-2 | -211664 |
| top | average opponent: 1489record: 2-2 | new rating: 1664 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1671 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 63 | Suzuki, Gou (1463) | Draw 1-1 | -41667 |
| 4block | 76 | Kumoura, Daisuke (1503) | Lost 1-2 | -211646 |
| 5block | 115 | Satou, Naoki (1519) | Won 2-0 | +161662 |
| 6block | 76 | Haneki, Daisuke (1588) | Lost 0-2 | -191643 |
| 7block | 105 | Takehana, Yuki (1600) | Won 2-1 | +171660 |
| 8block | 76 | Kamei, Shunsuke (1659) | Won 2-0 | +181678 |
| top | average opponent: 1555record: 3-2-1 | new rating: 1678 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1695 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 118 | Yun, Suhan (1619) | Won 2-0 | +161711 |
| 3sealed | 101 | Takakuwa, Akihiro (1742) | Lost 1-2 | -171694 |
| 4sealed | 173 | Ishii, Masashi (1442) | Lost 0-2 | -231671 |
| top | average opponent: 1601record: 1-2 | new rating: 1671 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1722 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 23 | Ito, Yuichi (1576) | Lost 1-2 | -211701 |
| 5extended | 61 | Morishita, Taiki (1539) | Won 2-0 | +151716 |
| 6extended | 43 | Matsuoka, Tomohide (1589) | Lost 0-2 | -201696 |
| 7extended | 44 | Konishi, Hideaki (1491) | Won 2-1 | +141710 |
| 8extended | 45 | Mitsuya, Kazuhiko (1839) | Lost 1-2 | -151695 |
| top | average opponent: 1607record: 2-3 | new rating: 1695 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1680 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 45 | Nishihara, Hiroki (1518) | Won 2-1 | +151695 |
| 3sealed | 75 | Takeda, Tsuneaki (1533) | Won 2-0 | +151710 |
| 4sealed | 47 | Higashino, Masayuki (1821) | Won 2-0 | +201730 |
| 5sealed | 28 | Maki, Koichiro (1739) | Lost 1-2 | -181712 |
| 6sealed | 25 | Sasaki, Yusuke(Miyagi) (1538) | Won 2-1 | +151727 |
| 7sealed | 19 | Mori, Katsuhiro (1848) | Lost 1-2 | -161711 |
| 8sealed | 73 | Seki, Kazuhiko (1584) | Won 2-1 | +161727 |
| 9rochester | 31 | Otsubo, Yuji (1773) | Won 2-0 | +191746 |
| 10rochester | 29 | Hayashi, Shinsuke (1695) | Lost 1-2 | -191727 |
| 11rochester | 11 | Komuro, Shuu (1856) | Lost 0-2 | -161711 |
| 12rochester | 17 | Morita, Katsunobu (1530) | Won 2-1 | +151726 |
| 13rochester | 4 | Yamazaki, Yuuki (1602) | Won 2-0 | +161742 |
| 14rochester | 8 | Shimizu, Akihiro (1637) | Lost 1-2 | -201722 |
| top | average opponent: 1667record: 8-5 | new rating: 1722 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 31 | Ishii, Hayato (1593) | Won 2-0 | +191561 |
| 5block | 13 | Katayama, Hidenori (1475) | Won 2-0 | +171578 |
| 6block | 6 | Eura, Hiroki (1546) | Won 2-0 | +171595 |
| 7block | 5 | Taru, Genki (1666) | Draw 1-1 | +21597 |
| 8block | 6 | Kanno, Atsushi (1604) | Won 2-1 | +181615 |
| 9block | 3 | Fujita, Osamu (2046) | Lost 0-1 | -111604 |
| 10block | 13 | Shimura, Ichirou (1715) | Won 2-1 | +201624 |
| 11block | 6 | Kishi, Tatsunori (1647) | Won 2-1 | +191643 |
| 12block | 5 | Yokosuka, Tomohiro (1685) | Draw 1-1 | 01643 |
| 13block | 9 | Sekine, Morio (1649) | Lost 0-2 | -181625 |
| 14block | 20 | Tachibana, Satoshi (1687) | Won 2-1 | +201645 |
| 15block | 13 | Fujihira, Taro (1616) | Won 2-0 | +171662 |
| 16block | 8 | Kataoka, Asami (1654) | Won 2-0 | +181680 |
| top | average opponent: 1660record: 9-2-2 | new rating: 1680 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 110 | Kobayashi, Shigenori (1465) | Lost 0-2 | -191505 |
| 2extended | 152 | Yabuguchi, Youhei (1482) | Won 2-0 | +171522 |
| 3extended | 125 | Kumoda, Kazuhiro (1500) | Won 2-0 | +181540 |
| 4extended | 70 | Takemoto, Takaaki (1503) | Lost 1-2 | -191521 |
| 5extended | 122 | Yasufuku, Akihiro (1498) | Won 2-0 | +181539 |
| 6extended | 107 | Kobayashi, Masanori (1657) | Won 2-0 | +201559 |
| 7extended | 39 | Adachi, Shingo (1650) | Lost 0-2 | -171542 |
| top | average opponent: 1536record: 4-3 | new rating: 1542 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 54 | Haruzono, Takashi (1500) | Lost 0-2 | -181482 |
| 2sealed | 170 | Saitou, Hiroaki (1482) | Won 2-0 | +181500 |
| 3sealed | 103 | Tanaka, Fuminori (1500) | Won 2-0 | +181518 |
| 4sealed | 82 | Morita, Yuki (1564) | Won 2-1 | +191537 |
| 5sealed | 48 | Hoshino, Hiroaki (1686) | Won 2-1 | +211558 |
| 6sealed | 41 | Kashima, Akihiro (1686) | Lost 1-2 | -161542 |
| 7sealed | 85 | Mihara, Makihito (1529) | Lost 0-2 | -181524 |
| top | average opponent: 1564record: 4-3 | new rating: 1524 | ||