Maruyama, Masaaki
Current rating: 1749 (#3951)
Record: 59-47-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 569 | Takada, Kazuaki (1507) | Won 2-1 | +151650 |
| 2sealed | 190 | Moriya, Taiki (1429) | Won 2-0 | +141664 |
| 3sealed | 552 | Yamasaki, Takumi (1643) | Won 2-0 | +181682 |
| 4sealed | 99 | Hannya, Yamato (1598) | Won 2-0 | +161698 |
| 5sealed | 7 | Nan, Tu (1844) | Won 2-1 | +211719 |
| 6sealed | 50 | Nagai, Mamoru (1829) | Won 2-0 | +201739 |
| 7sealed | 24 | Fukudome, Yuu (1759) | Lost 0-2 | -181721 |
| 8sealed | 81 | Makino, Hiroyuki (1731) | Won 2-1 | +191740 |
| 9sealed | 65 | Ohno, Yuki (1744) | Won 2-0 | +181758 |
| 10draft | 109 | Ogino, Hiroki (1744) | Won 2-1 | +171775 |
| 11draft | 8 | Matsukawa, Kentarou (1627) | Lost 1-2 | -201755 |
| 12draft | 207 | Takakura, Shinichirou (1556) | Won 2-0 | +141769 |
| 13draft | 59 | Yamazaki, Tomoki (1670) | Lost 1-2 | -201749 |
| 14draft | 87 | Takesue, Chikara (1812) | Lost 0-1 | -161733 |
| 15draft | 75 | Shima, Junichirou (1623) | Won 2-0 | +161749 |
| top | average opponent: 1674record: 11-4 | new rating: 1749 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 222 | Yoshihara, Shinji (1443) | Draw 1-1 | -31649 |
| 3sealed | 524 | Fujii, Kohei (1577) | Won 2-0 | +161665 |
| 4sealed | 275 | Miyasaka, Sho (1582) | Won 2-1 | +171682 |
| 5sealed | 138 | Kuwashiro, Yoshiyuki (1489) | Lost 1-2 | -221660 |
| 6sealed | 331 | Yashiki, Kouichi (1394) | Won 2-0 | +141674 |
| 7sealed | 199 | Itagaki, Yota (1578) | Lost 1-2 | -201654 |
| 8sealed | 357 | Kabashima, Takuya (1582) | Lost 0-2 | -191635 |
| top | average opponent: 1521record: 3-3-1 | new rating: 1635 | ||
| Grand Prix Singapore 2018 (DOM standard) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 118 | Ng, Kenji (1543) | Won 2-1 | +171661 |
| 3standard | 124 | Asehan, Ceasar John (1525) | Lost 1-2 | -211640 |
| 4standard | 224 | Ishihara, Jun (1827) | Won 2-1 | +211661 |
| 5standard | 137 | Neo, Winsen Cher Sen (1596) | Lost 0-2 | -191642 |
| 6standard | 166 | Alvar, Zachary (1531) | Won 2-0 | +161658 |
| 7standard | 119 | Leung, Victor (1474) | Won 2-1 | +151673 |
| 8standard | 43 | Abella, Lexter Chander (1539) | Lost 1-2 | -211652 |
| top | average opponent: 1577record: 4-3 | new rating: 1652 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 16 | Tillman, Thomas (1523) | Won 2-0 | +161646 |
| 3sealed | 52 | Tang, Tao (1505) | Lost 1-2 | -201626 |
| 4sealed | 135 | Sun, Zhiyuan (1490) | Won 2-0 | +151641 |
| 5sealed | 152 | Liu, Rongpei (1532) | Won 2-0 | +161657 |
| 6sealed | 38 | Sun, Yue (1460) | Won 2-0 | +151672 |
| 7sealed | 49 | Watanabe, Yuuya (2080) | Lost 1-2 | -111661 |
| 8sealed | 94 | Gong, Haoyu (1739) | Lost 0-2 | -171644 |
| top | average opponent: 1618record: 4-3 | new rating: 1644 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 534 | Takeshita, Masato (1482) | Won 2-0 | +161609 |
| 3sealed | 20 | Nishimoto, Takuya (1662) | Lost 0-2 | -171592 |
| 4sealed | 365 | Ueno, Hideto (1389) | Won 2-0 | +141606 |
| 5sealed | 479 | Moriyama, Masahide (1573) | Won 2-1 | +171623 |
| 6sealed | 312 | Yamaguchi, Tomoyuki (1576) | Lost 1-2 | -181605 |
| 7sealed | 278 | Brown, Eric (1802) | Won 2-1 | +211626 |
| 8sealed | 338 | Mishima, Wataru (1632) | Won 2-0 | +181644 |
| 9sealed | 122 | Ogawa, Nobuharu (1556) | Lost 1-2 | -191625 |
| 10draft | 216 | Chiba, Takato (1711) | Lost 0-2 | -171608 |
| 11draft | 270 | Zhang, Hongqiang (1610) | Won 2-0 | +181626 |
| 12draft | 256 | Tanaka, Shinichi (1812) | Lost 0-2 | -141612 |
| 13draft | 217 | Yamanaka, Yuki (1560) | Won 2-0 | +171629 |
| 14draft | 62 | Zhang, Hongqiang (1633) | Won 2-0 | +181647 |
| 15draft | 102 | Kashiwagi, Ryohei (1742) | Lost 1-2 | -171630 |
| top | average opponent: 1624record: 8-6 | new rating: 1630 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 426 | Otahara, Sho (1597) | Lost 1-2 | -151439 |
| 3standard | 851 | Ohmura, Satoshi (1544) | Won 2-0 | +191458 |
| 4standard | 577 | Oshima, Takafumi (1467) | Won 2-1 | +191477 |
| 5standard | 509 | Shimizu, Ryouta (1646) | Won 2-0 | +211498 |
| 6standard | 156 | Furukawa, Yuki (1519) | Won 2-0 | +181516 |
| 7standard | 232 | Ehara, Makoto (1538) | Won 2-1 | +181534 |
| 8standard | 68 | Fusegi, Takanori (1443) | Won 2-1 | +171551 |
| 9standard | 58 | Kondo, Kazuya (1551) | Won 2-0 | +181569 |
| 10standard | 21 | Ikawa, Yoshihiko (1810) | Lost 0-2 | -141555 |
| 11standard | 78 | Hirouchi, Hideaki (1590) | Won 2-0 | +191574 |
| 12standard | 46 | Goto, Yusei (1976) | Won 2-1 | +251599 |
| 13standard | 22 | Takeda, Harunobu (1859) | Lost 0-2 | -141585 |
| 14standard | 47 | Wakita, Tomoyuki (1767) | Lost 1-2 | -141571 |
| 15standard | 94 | Sato, Keisuke (1797) | Won 2-1 | +221593 |
| top | average opponent: 1650record: 10-4 | new rating: 1593 | ||
| Grand Prix Barcelona 2017 (AER standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 88 | Tauler Aguilo, Juan (1635) | Lost 0-2 | -151466 |
| 3standard | 532 | Ruiz, Jose (1560) | Won 2-0 | +191485 |
| 4standard | 241 | Herrero, Raul (1506) | Lost 1-2 | -171468 |
| 5standard | 358 | Alberola, Victor (1553) | Lost 1-2 | -171451 |
| 6standard | 449 | Bonifacio da Costa, Vasco (1513) | Lost 1-2 | -161435 |
| 7standard | 520 | Perez Cabeza, Ruben (1518) | Lost 0-2 | -171418 |
| 8standard | 472 | Stephens, Martin (1438) | Won 2-0 | +181436 |
| 9standard | 394 | De Luca, Daniele (1411) | Won 2-1 | +181454 |
| top | average opponent: 1517record: 3-5 | new rating: 1454 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 487 | Fujikura, Iori (1494) | Lost 1-2 | -171462 |
| 3legacy | 940 | Tazawa, Masayuki (1464) | Lost 0-2 | -181444 |
| 4legacy | 864 | Tanaka, Yuuji (1480) | Won 2-0 | +181462 |
| 5legacy | 762 | Makino, Yuuki (1503) | Won 2-1 | +191481 |
| 6legacy | 420 | Yamamoto, Naoto (1485) | Won 2-0 | +181499 |
| 7legacy | 498 | Suzuki, Nobuya5760 (1506) | Lost 1-2 | -181481 |
| 8legacy | 589 | Okawa, Hiroshi (1497) | Lost 1-2 | -171464 |
| 9legacy | 589 | Tsumagari, Shuhei (1428) | Won 2-0 | +171481 |
| top | average opponent: 1482record: 4-4 | new rating: 1481 | ||
| Grand Prix Kuala Lumpur 2016 (KLD standard) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 112 | Chong, Benjimin (1557) | Won 2-0 | +201493 |
| 3standard | 157 | Rosdin, Razif (1498) | Lost 0-0 | -181475 |
| 4standard | 110 | Cuello, Anthony (1401) | Lost 1-2 | -201455 |
| 5standard | 261 | Liow, Ricky (1465) | Won 2-0 | +191474 |
| 6standard | 177 | Mine, Masahiro (1631) | Lost 1-2 | -161458 |
| 7standard | 199 | Li, Chi (1568) | Won 2-1 | +201478 |
| 8standard | 143 | Li, Mo (1490) | Lost 0-2 | -171461 |
| 9standard | 202 | Santorio, John Paolo (1506) | Won 2-1 | +181479 |
| top | average opponent: 1514record: 4-4 | new rating: 1479 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 192 | Moki, Hiromu (1539) | Won 2-0 | +191517 |
| 4standard | 298 | Tamai, Yuno (1471) | Lost 0-2 | -191498 |
| 5standard | 379 | Ogawara, Youhei (1509) | Won 2-1 | +181516 |
| 6standard | 350 | Tahara, Ippei (1556) | Won 2-0 | +191535 |
| 7standard | 219 | Takayama, Kan (1644) | Won 2-0 | +201555 |
| 8standard | 47 | Matsushita, Junnya (1646) | Lost 0-2 | -171538 |
| 9standard | 180 | Meguro, Masahiko (1465) | Won 2-1 | +171555 |
| 10standard | 128 | Yokoyama, Shohei (1564) | Lost 0-2 | -181537 |
| 11standard | 309 | Tanaka, Shinichi (1830) | Lost 1-2 | -131524 |
| 12standard | 274 | Nakamura, Sara (1625) | Lost 1-2 | -161508 |
| 13standard | 335 | Noguchi, Takeshi (1556) | Lost 1-2 | -171491 |
| 14standard | 304 | Tadano, Syunta (1491) | Lost 0-2 | -181473 |
| top | average opponent: 1575record: 5-7 | new rating: 1473 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 363 | Yamamura, Yuma (1563) | Won 2-1 | +191519 |
| 4standard | 56 | Masuno, Ryosuke (1743) | Lost 1-2 | -141505 |
| 5standard | 332 | Ikeda, Tomokazu (1447) | Won 2-1 | +171522 |
| 6standard | 181 | Usui, Syou (1696) | Lost 0-2 | -151507 |
| 7standard | 348 | Hirayama, Atsushi (1708) | Lost 0-2 | -141493 |
| 8standard | 513 | Takuya, Andou (1515) | Won 2-0 | +181511 |
| 9standard | 342 | Fujita, Osamu (1770) | Lost 1-2 | -131498 |
| top | average opponent: 1635record: 3-4 | new rating: 1498 | ||