Ootsuki, Masahiro
Current rating: 1509
Record: 41-45-1
Grand Prix Sendai 2001Grand Prix Yokohama 2003Grand Prix Sendai 2004Grand Prix Nagoya 2004Grand Prix Okayama 2008Grand Prix Sendai 2010Grand Prix Nagoya 2012Grand Prix Kitakyushu 2013Grand Prix Kobe 2014Grand Prix Kyoto 2015Grand Prix Chiba 2015Grand Prix Chiba 2016Grand Prix Shizuoka 2018 (legacy)Grand Prix Nagoya 2019
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 141 | Homma, Akira (1467) | Lost 1-2 | -201549 |
| 2standard | 459 | Murakami, Haruki (1483) | Lost 0-2 | -191530 |
| 3standard | 833 | Higashi, Yuusuke (1358) | Lost 1-2 | -211509 |
| top | average opponent: 1436record: 0-3 | new rating: 1509 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 473 | Satou, Ryota (1504) | Lost 1-2 | -171447 |
| 2legacy | 525 | Yamazaki, Yoshitaka (1501) | Won 2-0 | +191466 |
| 3legacy | 438 | Nakamura, Takafumi (1503) | Won 2-0 | +181484 |
| 4legacy | 289 | Nonaka, Harufumi (1572) | Won 2-1 | +201504 |
| 5legacy | 278 | Yamato, Kohei (1459) | Won 2-1 | +171521 |
| 6legacy | 76 | Shirai, Shota 5117 (1552) | Won 2-1 | +191540 |
| 7legacy | 88 | Noto, Kohei (1483) | Lost 0-2 | -191521 |
| 8legacy | 135 | Matsuo, Yoshiyuki (1623) | Won 2-1 | +191540 |
| 9legacy | 88 | Chen, Xuebin (1579) | Lost 1-2 | -171523 |
| 10legacy | 99 | Noine, Kazuhiro (1653) | Won 2-0 | +201543 |
| 11legacy | 90 | Oshima, Shimpei (1482) | Won 2-1 | +171560 |
| 12legacy | 38 | Niwa, Hotaka (1689) | Lost 0-2 | -151545 |
| 13legacy | 82 | Matsumura, Toshikazu (1658) | Won 2-0 | +201565 |
| 14legacy | 47 | Ishii, Takuya (1730) | Won 2-0 | +211586 |
| 15legacy | 49 | Hiyama, Kenji (1640) | Lost 1-2 | -171569 |
| top | average opponent: 1575record: 10-5 | new rating: 1569 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 88 | Yanagi, Yuichi (1461) | Won 2-1 | +181435 |
| 2legacy | 204 | Yamamoto, Masaki (1494) | Won 2-0 | +191454 |
| 3legacy | 379 | Jinno, Kaname (1359) | Won 2-1 | +171471 |
| 4legacy | 79 | Shirakawa, Hiroaki (1496) | Lost 1-2 | -181453 |
| 5legacy | 471 | Kabeya, Atsushi (1428) | Won 2-1 | +181471 |
| 6legacy | 294 | Matsui, Yasuo (1672) | Won 2-0 | +211492 |
| 7legacy | 191 | Nakawatari, Kouhei (1568) | Won 2-0 | +201512 |
| 8legacy | 86 | Nobe, Hiroyuki (1449) | Won 2-1 | +171529 |
| 9legacy | 60 | Matsubara, Takeyuki (1658) | Lost 1-2 | -161513 |
| 10legacy | 48 | Oodan, Takeshi (1721) | Lost 1-2 | -141499 |
| 11legacy | 217 | Fukui, Yui (1541) | Lost 0-2 | -181481 |
| 12legacy | 210 | Mori, Tatsuki (1504) | Lost 0-2 | -171464 |
| top | average opponent: 1529record: 7-5 | new rating: 1464 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2288 | Sato, Koichiro (1500) | Lost 0-2 | -171409 |
| 2sealed | 2398 | Kiyokawa, Hidetoshi (1463) | Won 2-1 | +191428 |
| 3sealed | 2253 | Takahashi, Ryouhei (1569) | Won 2-1 | +211449 |
| 4sealed | 2301 | Matsumoto, Yuuichi (1519) | Lost 1-2 | -171432 |
| 5sealed | 2242 | Oota, Yuuki (1581) | Lost 1-2 | -151417 |
| top | average opponent: 1526record: 2-3 | new rating: 1417 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 219 | Oosawa, Syo (1468) | Lost 0-2 | -171426 |
| top | record: 0-1 | new rating: 1426 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 855 | Kawai, Katsuya (1473) | Lost 1-2 | -181480 |
| 2modern | 1085 | Takahashi, Ryouhei (1479) | Lost 1-2 | -181462 |
| 3modern | 1215 | Hayashi, Tomoki (1432) | Lost 0-2 | -191443 |
| top | average opponent: 1462record: 0-3 | new rating: 1443 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 93 | Honda, Takeshi (1421) | Won 2-0 | +161515 |
| 2standard | 161 | Tateyama, Eiji (1447) | Lost 1-2 | -191496 |
| 3standard | 456 | Nishioka, Masataka (1501) | Won 2-1 | +181514 |
| 4standard | 196 | Nishimoto, Takuya (1532) | Lost 1-2 | -181496 |
| 5standard | 101 | Sakai, Yoshiki (1540) | Won 2-0 | +191515 |
| 6standard | 341 | Tokunaga, Hiroki (1580) | Lost 1-2 | -171498 |
| top | average opponent: 1503record: 3-3 | new rating: 1498 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 61 | Maruoka, Youhei (1462) | Lost 1-2 | -181441 |
| 2standard | 450 | Yakushi, Hideki (1482) | Won 2-0 | +191460 |
| 3standard | 362 | Watanabe, Hirokazu (1467) | Won 2-0 | +181478 |
| 4standard | 282 | Matsuda, Atsushi (1495) | Won 2-1 | +181496 |
| 5standard | 308 | Hiroaki N., (1536) | Draw 1-1 | +11497 |
| 6standard | 252 | Kwak, Yul-Tak (1547) | Won 2-0 | +191516 |
| 7standard | 159 | Nanjo, Masashi (1553) | Lost 1-2 | -171499 |
| top | average opponent: 1506record: 4-2-1 | new rating: 1499 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 37 | Ishikawa, Takahiro (1500) | Lost 1-2 | -171456 |
| 2standard | 226 | Katou, Akihiro (1525) | Won 2-1 | +191475 |
| 3standard | 226 | Katou, Shin'ya (1467) | Lost 1-2 | -181457 |
| 4standard | 318 | Abe, Yusuke (1437) | Won 2-1 | +181475 |
| 5standard | 218 | Kudo, Koichi (1599) | Lost 1-2 | -161459 |
| top | average opponent: 1506record: 2-3 | new rating: 1459 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Nieda, Koutarou (1500) | Won 0-0 | +191485 |
| 2sealed | 109 | Ohata, Hiroyuki (1485) | Lost 0-2 | -181467 |
| 3sealed | 194 | fujii, akihito (1500) | Won 2-1 | +191486 |
| 4sealed | 106 | Hamada, Akira (1622) | Won 2-1 | +201506 |
| 5sealed | 73 | Tanikawa, Itaru (1480) | Lost 1-2 | -181488 |
| 6sealed | 160 | Umeno, Kengo (1703) | Lost 1-2 | -151473 |
| top | average opponent: 1549record: 3-3 | new rating: 1473 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 187 | Ogawa, Syunsuke (1661) | Won 2-1 | +221472 |
| 3standard | 9 | Hayashi, Masahito (1536) | Lost 0-2 | -171455 |
| 4standard | 192 | Hattyou, Yuuki (1518) | Won 2-1 | +191474 |
| 5standard | 164 | Shiozu, Ryouma (1896) | Lost 0-2 | -111463 |
| 6standard | 151 | Okuda, Masateru (1568) | Won 2-0 | +201483 |
| 7standard | 147 | Ishitaka, Yusuke (1537) | Lost 1-2 | -171466 |
| top | average opponent: 1619record: 3-3 | new rating: 1466 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 124 | Yanagawa, Tsubasa (1500) | Lost 0-2 | -171422 |
| 2sealed | 167 | Noguchi, Masumi (1482) | Won 2-0 | +191441 |
| 3sealed | 160 | Shimizu, Hajime (1631) | Lost 1-2 | -141427 |
| 4sealed | 165 | Hio, Takumi (1482) | Won 2-0 | +191446 |
| 5sealed | 151 | Suzuki, Kenta (1644) | Lost 0-2 | -151431 |
| 6sealed | 159 | Bannai, Yousuke (1482) | Won 2-1 | +191450 |
| top | average opponent: 1537record: 3-3 | new rating: 1450 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 78 | Sugama, Hideichi (1550) | Lost 1-2 | -161433 |
| 3block | 163 | Sugiyama, Kouichi (1563) | Won 2-1 | +201453 |
| 4block | 110 | Ichinose, Takashi (1517) | Won 2-1 | +191472 |
| 5block | 68 | Takayama, Kenta (1518) | Lost 0-2 | -171455 |
| 6block | 163 | Yoshikawa, Hiroshi (1552) | Lost 1-2 | -161439 |
| top | average opponent: 1540record: 2-3 | new rating: 1439 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 33 | Taru, Genki (1558) | Lost 0-2 | -171483 |
| 3extended | 131 | Aizawa, Atsuo (1500) | Won 2-0 | +181501 |
| 4extended | 99 | Abe, Natsuki (1517) | Lost 0-2 | -171484 |
| 5extended | 108 | Yamazaki, Nobutoshi (1486) | Lost 1-2 | -181466 |
| 6extended | 143 | Ogiyama, Shuuji (1526) | Lost 1-2 | -171449 |
| 7extended | 129 | Mitsui, Hideo (1464) | Won 2-1 | +181467 |
| 8extended | 111 | Ohta, Shinji (1463) | Lost 0-2 | -181449 |
| top | average opponent: 1502record: 2-5 | new rating: 1449 | ||