Maruyama, Takaaki
Current rating: 1514
Record: 34-36-2 (GP) / 6-7 (professional)
Grand Prix Sendai 2001Grand Prix Fukuoka 2002Grand Prix Utsunomiya 2002Grand Prix Hiroshima 2003Grand Prix Kyoto 2003Grand Prix Yokohama 2003Grand Prix Shizuoka 2003Pro Tour Amsterdam 2004Grand Prix Sendai 2004Grand Prix Nagoya 2004Grand Prix Yokohama 2004Grand Prix Matsuyama 2005Grand Prix Niigata 2005Grand Prix Hiroshima 2006Grand Prix Niigata 2009
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 140 | Katayama, Hidenori (1596) | Lost 0-2 | -171533 |
| 3sealed | 162 | Okamoto, Yuuma (1498) | Lost 0-2 | -191514 |
| 4sealed | 284 | Hagiwara, Yuuta (1447) | Won 2-0 | +171531 |
| 5sealed | 182 | Oohashi, Toshiya (1559) | Lost 1-2 | -171514 |
| top | average opponent: 1525record: 1-3 | new rating: 1514 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 16 | Sugiura, Kiyohiro (1474) | Won 2-1 | +181527 |
| 2sealed | 2 | Umeno, Kengo (1641) | Won 2-0 | +201547 |
| 3sealed | 3 | Spillo, Stefano (1511) | Won 2-0 | +171564 |
| 4sealed | 46 | Takeda, Hiroki (1731) | Won 2-0 | +211585 |
| 5sealed | 18 | Mouri, Takemasa (1708) | Lost 0-1 | -161569 |
| 6sealed | 30 | Moriya, Jun (1542) | Lost 0-2 | -181551 |
| 7sealed | 1 | Tsuda, Junichi (1516) | Won 2-1 | +171568 |
| 8sealed | 66 | Hirayama, Atsushi (1559) | Lost 0-2 | -181550 |
| top | average opponent: 1585record: 5-3 | new rating: 1550 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 20 | Hoshiba, Shoma (1500) | Lost 0-2 | -191549 |
| 2block | 168 | Umi, Hirokazu (1448) | Lost 0-2 | -201529 |
| 3block | 190 | Shindo, Yoshiya (1456) | Lost 1-2 | -201509 |
| top | average opponent: 1468record: 0-3 | new rating: 1509 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | saitou, yutaka (1500) | Won 2-1 | +181506 |
| 2sealed | 82 | Yun, Suhan (1601) | Lost 1-2 | -161490 |
| 3sealed | 127 | Ikawa, Yoshihiko (1507) | Won 2-0 | +181508 |
| 4sealed | 86 | Hasegawa, Taro (1590) | Won 2-0 | +201528 |
| 5sealed | 50 | Suzuki, Kenta (1622) | Won 2-0 | +191547 |
| 6sealed | 42 | Yamamoto, Shouhei (1543) | Won 2-1 | +181565 |
| 7sealed | 29 | Fujiyama, Shinichi (1579) | Won 2-0 | +191584 |
| 8sealed | 21 | Ishimura, Shintaro (1698) | Lost 0-2 | -161568 |
| top | average opponent: 1580record: 6-2 | new rating: 1568 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 112 | Aizawa, Keiji (1652) | Lost 1-2 | -151508 |
| 3sealed | 148 | Maki, Ryosuke (1413) | Lost 1-2 | -201488 |
| top | average opponent: 1532record: 0-2 | new rating: 1488 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 247 | Sasaki, Yuki (1464) | Won 2-0 | +161583 |
| 2standard | 108 | Nonaka, Kentarou (1520) | Lost 1-2 | -191564 |
| 3standard | 330 | Mori, Masato (1498) | Lost 1-2 | -191545 |
| 4standard | 380 | Tanaka, Hidenori (1473) | Lost 0-2 | -191526 |
| 5standard | 363 | Matsumoto, Takahiro (1464) | Won 2-0 | +171543 |
| 6standard | 328 | Yamada, Shou (1481) | Lost 1-2 | -201523 |
| top | average opponent: 1483record: 2-4 | new rating: 1523 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 43 | Matsuki, Hitoshi (1501) | Lost 0-2 | -201569 |
| 4sealed | 110 | Saijou, Yuuichi (1518) | Won 2-1 | +171586 |
| 5sealed | 60 | Ohno, Isao (1541) | Lost 0-2 | -191567 |
| top | average opponent: 1520record: 1-2 | new rating: 1567 | ||
| Pro Tour Amsterdam 2004 (MRD rochester) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 72 | Lynn, Nicholas (1469) | Won 2-0 | +161611 |
| 2rochester | 56 | Kolb, Markus (1607) | Lost 1-2 | -181593 |
| 3rochester | 102 | Collins, Michael [NZL] 2 (1456) | Lost 1-2 | -211572 |
| 4rochester | 146 | Reinhardt, Fabio (1688) | Won 2-0 | +201592 |
| 5rochester | 112 | Cade, Chris (1564) | Won 2-1 | +181610 |
| 6rochester | 80 | Rubin, Matthew (1750) | Won 2-0 | +201630 |
| 7rochester | 4 | Barra, Giulio (1656) | Lost 1-2 | -171613 |
| 8rochester | 51 | Wiegersma, Jelger (1963) | Lost 0-2 | -121601 |
| 10rochester | 51 | Wiker, Tuukka (1543) | Won 2-0 | +171618 |
| 11rochester | 46 | Bergstrom, Jonathan (1679) | Won 2-1 | +191637 |
| 12rochester | 29 | Tachibana, Satoshi (1721) | Lost 1-2 | -171620 |
| 14rochester | 9 | Blume, Marco (1779) | Lost 1-2 | -151605 |
| 15rochester | 34 | Huber, Christoph (1671) | Lost 1-2 | -161589 |
| top | average opponent: 1657record: 6-7 | new rating: 1589 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1419 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 15 | Nagura, Hiroto (1540) | Lost 0-2 | -161403 |
| 3sealed | 187 | Nakanishi, Keisuke (1452) | Won 2-0 | +191422 |
| 4sealed | 138 | Shima, Junichirou (1502) | Won 2-1 | +201442 |
| 5sealed | 63 | Ohige, Tatsuya (1502) | Won 2-0 | +191461 |
| 6sealed | 70 | Katuki, Yuuichirou (1528) | Won 2-0 | +191480 |
| 7sealed | 32 | Maeba, Hideaki (1736) | Won 2-1 | +231503 |
| 8sealed | 24 | Nakagawa, Yu (1567) | ID | 01503 |
| 9rochester | 16 | Shiwaku, Tsuyoshi (1610) | Won 2-0 | +201523 |
| 10rochester | 10 | Shimono, Tetsuro (1629) | Won 2-0 | +201543 |
| 11rochester | 21 | Fujita, Kenichi (1779) | Lost 0-2 | -141529 |
| 12rochester | 16 | Ooshiro, Hideto (1687) | Won 2-0 | +211550 |
| 13rochester | 28 | Osaka, Yusuke (1746) | Won 2-0 | +211571 |
| 14rochester | 17 | Komuro, Shuu (1904) | Won 2-1 | +241595 |
| top | average opponent: 1629record: 10-2-1 | new rating: 1595 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 41 | Nagase, Shougo (1435) | Won 2-1 | +181461 |
| 3block | 22 | Ozawa, Takeshi (1466) | Lost 0-2 | -181443 |
| 4block | 225 | Takaishi, Yuuri (1519) | Lost 1-2 | -161427 |
| 5block | 207 | Sakamoto, Masaaki (1484) | Won 2-0 | +191446 |
| 6block | 151 | Okamoto, Jin (1953) | Lost 0-2 | -101436 |
| 7block | 230 | Takeda, Tsuneaki (1498) | Lost 1-2 | -171419 |
| top | average opponent: 1559record: 2-4 | new rating: 1419 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 30 | Suga, Yakeichi (1500) | Lost 1-2 | -181461 |
| 3sealed | 231 | Hamamoto, Kenji (1462) | Lost 0-2 | -181443 |
| top | average opponent: 1481record: 0-2 | new rating: 1443 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 95 | Sogabe, Ippei (1601) | Lost 0-2 | -161460 |
| 3extended | 96 | Tanimoto, Tatsuro (1463) | Lost 0-2 | -181442 |
| 4extended | 136 | Ito, Hidetoshi (1419) | Won 2-0 | +181460 |
| 5extended | 141 | Matsuo, Keisuke (1483) | Won 2-1 | +181478 |
| 6extended | 87 | Hatta, Tetsuya (1524) | Draw 1-1 | +11479 |
| top | average opponent: 1498record: 2-2-1 | new rating: 1479 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 39 | Sogabe, Ippei (1610) | Lost 0-2 | -161475 |
| 3sealed | 115 | Ueda, Shigeki (1552) | Won 2-0 | +191494 |
| 4sealed | 87 | Nakamura, Hirobumi (1461) | Lost 0-2 | -181476 |
| top | average opponent: 1541record: 1-2 | new rating: 1476 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 39 | Kawakami, Seiji (1536) | Won 2-0 | +191519 |
| 4sealed | 50 | Morita, Masahiko (1815) | Lost 0-2 | -131506 |
| 5sealed | 58 | Wakisaka, Yuusuke (1578) | Won 2-0 | +191525 |
| 6sealed | 28 | Nakazawa, Kazuhiro (1561) | Lost 0-2 | -171508 |
| 7sealed | 51 | Kuroda, Toshiyuki (1550) | Lost 0-2 | -171491 |
| top | average opponent: 1608record: 2-3 | new rating: 1491 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 92 | Chiba, Youhei (1500) | Won 2-0 | +181518 |
| 2extended | 82 | Sugahara, Hideyuki (1518) | Draw 1-1 | 01518 |
| 3extended | 84 | Yamada, Hiroki (1517) | Won 2-1 | +181536 |
| 4extended | 63 | Saito, Kazuaki (1518) | Lost 1-2 | -181518 |
| 5extended | 96 | Tamura, Katsuhiko (1538) | Lost 0-2 | -181500 |
| top | average opponent: 1518record: 2-2-1 | new rating: 1500 | ||