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Okamoto, Masahiro
Current rating: 1408

Grand Prix Kobe 2017 (modern) starting rating: 1433
round table opponent (rating) result Δrating
1modern 315 Ando, Akira (1529) Won 2-0 +201453
2modern 82 Inoe, Daisuke 0157 (1517) Lost 1-2 -171436
3modern 838 Ryohei, Kunitomi (1499) Lost 1-2 -171419
4modern 962 Fukutani, Yuushou (1505) Won 2-0 +201439
5modern 774 Takeda, Hiroki (1611) Lost 0-2 -151424
6modern 1097 Kajiwara, Tomoki (1536) Lost 1-2 -161408
top average opponent: 1533record: 2-4 new rating: 1408

Grand Prix Tokyo 2016 (SOI standard) starting rating: 1445
round table opponent (rating) result Δrating
1standard 928 Okamoto, Yasutaka (1443) Draw 1-1 01445
2standard 780 Sakigawara, Yuhei (1515) Lost 1-2 -171428
3standard 1425 Matsumoto, Takumi (1483) Lost 0-2 -171411
4standard 1522 Kyouya, Masahiko (1464) Won 2-0 +191430
5standard 1277 Torii, Kouyu (1486) Lost 0-2 -171413
6standard 1362 Yoshida, Kai (1424) Won 2-0 +181431
7standard 1138 Wakairo, Tatsuya (1484) Won 2-0 +191450
8standard 893 Tanaka, Tatsuya (1501) Lost 0-1 -171433
top average opponent: 1475record: 3-4-1 new rating: 1433

Grand Prix Nagoya 2016 (OGW limited) starting rating: 1408
round table opponent (rating) result Δrating
1sealed 198 Anzai, Shintaro (1500) Won 2-0 +201428
2sealed 356 Sato, Hikaru6659 (1518) Won 2-0 +201448
3sealed 319 Kagotani, Naota (1523) Lost 0-2 -171431
4sealed 381 Kondo, Masahiro (1532) Lost 1-2 -161415
5sealed 687 Murakami, Yuuichi (1502) Won 2-0 +201435
6sealed 647 Cheng, Tung-Yi (1713) Lost 0-2 -131422
7sealed 794 Nakamura, Ryou (1502) Won 2-0 +191441
8sealed 649 Ando, Akira (1558) Won 2-1 +201461
9sealed 277 Hunamoto, Yuuki (1544) Lost 0-2 -161445
top average opponent: 1544record: 5-4 new rating: 1445

Grand Prix Kobe 2015 (BFZ standard) starting rating: 1457
round table opponent (rating) result Δrating
1standard 396 Toshikawa, Kento (1501) Lost 1-2 -171440
2standard 740 Tamai, Yuno (1464) Lost 0-2 -181422
3standard 1158 Suzuki, Masahide (1464) Won 2-0 +191441
4standard 859 Tachibana, Kentarou (1600) Lost 1-2 -151426
5standard 1017 Imura, Sei (1463) Lost 1-2 -181408
top average opponent: 1498record: 1-4 new rating: 1408

Grand Prix Chiba 2015 (MM2 limited) starting rating: 1409
round table opponent (rating) result Δrating
1sealed 2017 Sasayama, Osamu (1500) Won 2-0 +191428
2sealed 2024 Hirohata, Syo (1458) Won 2-1 +191447
3sealed 2130 Kawaguchi, Tetsu (1465) Lost 0-2 -181429
4sealed 2247 Yamada, Takashi5943 (1520) Won 2-0 +201449
5sealed 2154 Shindo, Yoshiya (1427) Won 2-1 +171466
6sealed 2114 Masudate, Sadaharu (1570) Draw 1-1 +21468
7sealed 2078 Sasaki, Yuuta (1847) Lost 0-2 -111457
top average opponent: 1541record: 4-2-1 new rating: 1457

Grand Prix Shizuoka 2015 (KTK limited) starting rating: 1460
round table opponent (rating) result Δrating
1sealed 958 Miura, Ryuji (1500) Lost 1-2 -171443
2sealed 941 Nakahashi, Yoshihiro (1481) Won 2-1 +191462
3sealed 953 Ohkura, Ryota (1503) Lost 0-2 -181444
4sealed 966 Sano, Daiki (1510) Lost 1-2 -171427
5sealed 1033 Yoda, Yuuki (1382) Lost 0-2 -181409
top average opponent: 1475record: 1-4 new rating: 1409

Grand Prix Yokohama 2013 (GTC limited) starting rating: 1488
round table opponent (rating) result Δrating
2sealed 872 Imai, Takashi (1532) Won 2-1 +191507
3sealed 804 Yokozawa, Naoya (1651) Lost 1-2 -151492
4sealed 903 Naitou, Keisuke (1650) Lost 1-2 -151477
5sealed 1003 Hasegawa, Suguru (1555) Lost 1-2 -171460
top average opponent: 1597record: 1-3 new rating: 1460

Grand Prix Nagoya 2012 (RTR standard) starting rating: 1531
round table opponent (rating) result Δrating
1standard 294 Nomura, Satoshi (1500) Won 2-1 +181549
2standard 98 Tanaka, Yosuke (1500) Draw 1-1 -11548
3standard 327 Shimizu, Takafumi (1464) Draw 1-1 -21546
4standard 544 Fujii, Tatsuya (1516) Won 2-0 +181564
5standard 379 Amano, Makoto (1462) Lost 0-2 -201544
6standard 497 Inazawa, Ryo (1560) Lost 1-2 -181526
7standard 489 Watanabe, Sakiya (1484) Lost 0-2 -181508
8standard 433 Ito, Makoto (Aichi) (1447) Lost 0-2 -201488
top average opponent: 1492record: 2-4-2 new rating: 1488

Grand Prix Yokohama 2012 (modern) starting rating: 1483
round table opponent (rating) result Δrating
2modern 146 Futatsugi, Takuya (1500) Won 2-0 +181501
3modern 31 Kurosawa, Hiroki (1538) Won 2-0 +191520
4modern 139 Wada, Akihiro (1511) Won 2-1 +181538
5modern 8 Sui, Xin (1809) Lost 1-2 -131525
6modern 159 Kuriyama, Kazuya (1557) Won 2-1 +181543
7modern 88 Ando, Ryosuke (1526) Won 2-0 +181561
8modern 60 Nagaoka, Takayuki (1891) Lost 0-2 -121549
9modern 140 Yonezawa, Musashi (1578) Lost 0-2 -181531
top average opponent: 1614record: 5-3 new rating: 1531

Grand Prix Kobe 2012 (DKA limited) starting rating: 1467
round table opponent (rating) result Δrating
2sealed 65 Sunaga, Masahiro (1571) Won 2-1 +201487
3sealed 94 Juumonji, Ryou (1747) Lost 0-2 -141473
4sealed 348 Choi, Kiho (1485) Won 2-0 +181491
5sealed 212 Naruse, Yoshiki (1500) Lost 1-2 -171474
6sealed 298 Maij, Rosario (1844) Won 2-1 +241498
7sealed 126 Matsuda, Issui (1672) Lost 1-2 -151483
top average opponent: 1637record: 3-3 new rating: 1483

Grand Prix Hiroshima 2011 (ISD standard) starting rating: 1501
round table opponent (rating) result Δrating
1standard 84 Taniguchi, Yuki (1538) Lost 0-2 -181483
2standard 280 Ishihara, Jun (1625) Won 2-0 +211504
3standard 174 Morinaga, Masaharu (1385) Lost 0-2 -201484
4standard 293 Koretomo, Yuji (1436) Won 2-0 +171501
5standard 242 Ikeda, Kazuki (1595) Lost 1-2 -161485
6standard 278 Asai, Ryutaro (1481) Lost 1-2 -181467
top average opponent: 1510record: 2-4 new rating: 1467

Grand Prix Kobe 2011 (extended) starting rating: 1476
round table opponent (rating) result Δrating
1extended 35 Yamaguchi, Yu (1481) Lost 1-2 -171459
2extended 185 Sasaki, Kazuma (1418) Won 2-1 +171476
3extended 214 Ota, Keisuke (1553) Won 2-0 +191495
4extended 196 Yamazaki, Hiroyuki (1450) Won 2-1 +171512
5extended 73 Ikedo, Masakazu (1666) Lost 1-2 -151497
6extended 129 Ohno, Isao (1612) Won 2-1 +201517
7extended 126 Fujimoto, Yosuke (1600) Lost 1-2 -161501
top average opponent: 1540record: 4-3 new rating: 1501

Grand Prix Sendai 2010 (ROE standard) starting rating: 1494
round table opponent (rating) result Δrating
1standard 202 Kawakami, Masashi (1417) Lost 0-2 -201474
2standard 341 Nagata, Masashi (1482) Won 2-0 +181492
3standard 205 Haneda, Masatoshi (1473) Won 2-1 +181510
4standard 254 Ueda, Katsuya (1616) Lost 0-2 -161494
5standard 309 Konoma, Nobuyuki (1493) Lost 1-2 -181476
6standard 302 Saito, Keita (1479) Won 2-1 +181494
7standard 243 Seki, Fujio (1518) Lost 1-2 -181476
top average opponent: 1497record: 3-4 new rating: 1476

Grand Prix Yokohama 2010 (extended) starting rating: 1495
round table opponent (rating) result Δrating
1extended 401 Nasu, Kenichi (1456) Lost 0-2 -191476
2extended 476 Tomizawa, Yuusuke (1445) Lost 1-2 -181458
3extended 410 Ihira, Yuuki (1464) Won 2-0 +181476
4extended 452 Matsuta, Takashi (1485) Won 2-1 +181494
5extended 252 Endo, Takuya (1501) Won 2-0 +181512
6extended 222 Suzuki, Kazushige (1494) Lost 0-2 -181494
top average opponent: 1474record: 3-3 new rating: 1494

Grand Prix Niigata 2009 (M10 limited) starting rating: 1506
round table opponent (rating) result Δrating
1sealed 240 Katayose, Shingo (1688) Lost 0-2 -151491
2sealed 298 Kurihara, Kanou (1484) Won 2-1 +181509
3sealed 239 Weiskotten, Brendan (1500) Lost 0-2 -181491
4sealed 224 Takano, Hayato (1481) Won 2-1 +171508
5sealed 185 Sugaya, Hironobu (1759) Lost 0-2 -131495
top average opponent: 1582record: 2-3 new rating: 1495

Grand Prix Kobe 2009 (extended) starting rating: 1545
round table opponent (rating) result Δrating
1extended 91 Ohige, Tatsuya (1490) Draw 1-1 -11544
2extended 144 Gouda, Tatsushi (1502) Lost 1-2 -191525
3extended 197 Hata, Hiromi (1462) Draw 1-1 -11524
4extended 246 Ida, Takamasa (1488) Lost 1-2 -181506
top average opponent: 1485record: 0-2-2 new rating: 1506

Grand Prix Okayama 2008 (ALA limited) starting rating: 1607
round table opponent (rating) result Δrating
1sealed 144 Mori, Shouta (1481) Lost 0-0 -211586
2sealed 228 Tashima, Chihiro (1414) Lost 1-2 -211565
3sealed 268 Takahashi, Kenji (1445) Lost 0-2 -201545
top average opponent: 1447record: 0-3 new rating: 1545

Grand Prix Kobe 2008 (Lorwyn block) starting rating: 1603
round table opponent (rating) result Δrating
1block 201 Koizumi, Naoya (1500) Lost 1-2 -201583
2block 248 Julian Bocar, Anwar (1482) Won 2-1 +161599
3block 142 Torigoe, Seitaro (1536) Won 2-0 +171616
4block 195 Chao, Peter (1552) Lost 1-2 -191597
5block 274 Tanaka, Tomonori (1462) Won 2-0 +151612
6block 127 Yamazaki, Takahiro (1456) Won 2-1 +151627
7block 72 Mochizuki, Kazuhiro (1476) Lost 0-2 -201607
top average opponent: 1495record: 4-3 new rating: 1607

Grand Prix Shizuoka 2008 (MOR standard) starting rating: 1617
round table opponent (rating) result Δrating
1standard 41 Suezawa, Ryo (1523) Lost 1-2 -201597
2standard 238 Kubotera, Yuuki (1481) Lost 0-2 -201577
3standard 324 Hiraga, Masahiro (1442) Won 2-0 +161593
4standard 311 Tateno, Tomoaki (1482) Won 2-0 +161609
5standard 188 Takawashi, Kenji (1499) Won 2-0 +161625
6standard 179 Yamada, Takashi (1415) Lost 0-2 -221603
top average opponent: 1474record: 3-3 new rating: 1603

Grand Prix Kitakyushu 2007 (LRW limited) starting rating: 1607
round table opponent (rating) result Δrating
2sealed 17 Akita, Hideki (1519) Lost 0-2 -191588
3sealed 118 Tanaka, Shogo (1375) Lost 1-2 -221566
4sealed 139 Yasunaga, Takumi (1484) Won 2-0 +161582
5sealed 105 Tsuchiya, Shigetaka (1421) Won 2-1 +151597
6sealed 71 Higashi, Takao (1521) Won 2-0 +171614
7sealed 98 Suzuki, Yuuji (1667) Won 2-1 +191633
8sealed 40 Chang, Chih-Hsiang (1734) Lost 0-2 -161617
top average opponent: 1532record: 4-3 new rating: 1617

Grand Prix Kyoto 2007 (PLC standard) starting rating: 1573
round table opponent (rating) result Δrating
2standard 100 Sugama, Hideichi (1545) Won 2-0 +171590
3standard 63 Kurakami, Shun (1618) Lost 1-2 -171573
4standard 171 Oomura, Takashi (1558) Won 2-0 +181591
5standard 103 Yamanishi, Mamoru (1586) Won 2-1 +181609
6standard 49 Nakajima, Tomoya (1673) Lost 1-2 -171592
7standard 123 Honda, Atsuo (1532) Lost 1-2 -191573
8standard 147 Kariya, Shoutarou (1540) Won 2-0 +171590
9standard 99 Oomura, Tomoya (1539) Won 2-1 +171607
top average opponent: 1574record: 5-3 new rating: 1607

Grand Prix Yamagata 2006 (TSP limited) starting rating: 1526
round table opponent (rating) result Δrating
1sealed 56 Kubouchi, Naoki (1683) Won 2-1 +211547
2sealed 83 Miura, Mamoru (1515) Won 2-0 +171564
3sealed 14 Nakao, Munenari (1499) Lost 1-2 -191545
4sealed 82 Furukawa, Ken'ichi (1716) Won 2-1 +211566
5sealed 42 Ooshima, Kunihiro (1529) Won 2-0 +171583
6sealed 38 Kabeshita, Yoshito (1505) Won 2-0 +171600
7sealed 47 Otsuka, Hiroki (1531) Won 2-0 +171617
8sealed 11 Takahashi, Yuta (1623) ID 01617
9draft 9 Masuno, Ryosuke (1730) Won 2-0 +201637
10draft 26 Oks, Oliver (1730) Draw 1-1 +11638
11draft 14 Takahashi, Yuta (1634) Lost 0-2 -181620
12draft 18 Asahara, Akira (2005) Lost 0-2 -111609
13draft 23 Oks, Oliver (1695) Lost 0-2 -171592
14draft 28 Lim, Jeongmuk (1512) Lost 0-2 -191573
top average opponent: 1636record: 7-5-2 new rating: 1573

Grand Prix Hiroshima 2006 (CSP limited) starting rating: 1484
round table opponent (rating) result Δrating
1sealed 54 Hatta, Shinichirou (1539) Lost 1-2 -171467
2sealed 139 Takaoka, Yukimasa (1481) Won 2-1 +181485
3sealed 95 Maehata, Yasuhito (1671) Lost 1-2 -151470
4sealed 149 Kuraoka, Shintarou (1446) Won 2-0 +181488
5sealed 98 Umesaki, Naoaki (1412) Won 2-0 +171505
6sealed 89 Ikeda, Kunio (1465) Lost 1-2 -191486
7sealed 31 Ishida, Masahiro (1487) Won 2-1 +181504
8sealed 69 Itou, Shougo (1715) Won 2-1 +221526
top average opponent: 1527record: 5-3 new rating: 1526

Grand Prix Niigata 2005 (Kamigawa block) starting rating: 1500
round table opponent (rating) result Δrating
1block 33 Fujii, Hidekazu (1500) Won 2-1 +181518
2block 62 Seo, Asako (1468) Draw 1-1 -11517
3block 79 Arai, Tadayuki (1518) Won 2-0 +181535
4block 79 Tsuchiya, Heinrich (1593) Lost 0-2 -171518
5block 118 Matsui, Kazuki (1526) Lost 0-2 -181500
6block 149 Takehana, Yuki (1584) Lost 0-2 -161484
top average opponent: 1531record: 2-3-1 new rating: 1484