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Koyama, Masashi
Current rating: 1635

Strixhaven Championship (MTGA mixed) starting rating: 1654
round table opponent (rating) result Δrating
1historic 105 Santos, Diogo (1586) Won 2-1 +171671
2historic 40 Brodie, Daniel (1650) Lost 0-2 -191652
3historic 53 Cuneo, Andrew (1948) Lost 0-2 -131639
4standard 92 Lin, Jeff (1488) Won 2-0 +161655
5standard 80 Caitung, Rocky (1708) Lost 1-2 -171638
6standard 87 Vervoort, Max (1565) Won 2-0 +161654
7standard 66 Sobrino Valiente, Miguel (1592) Lost 1-2 -191635
top average opponent: 1648record: 3-4 new rating: 1635

Grand Prix Nagoya 2014 (BNG limited) starting rating: 1562
round table opponent (rating) result Δrating
2sealed 212 Taki, Yoshikazu (1509) Won 2-1 +171579
3sealed 164 Maruyama, Satoshi (1415) Won 2-0 +151594
4sealed 11 Shimizu, Yousuke (1599) Lost 1-2 -181576
5sealed 179 Watanabe, Yoshiaki (1525) Won 2-1 +171593
6sealed 61 Mantani, Keiji (1715) Won 2-1 +201613
7sealed 54 Kuo, Tzu-Ching (1771) Lost 0-2 -151598
8sealed 55 Koyanagi, Takashi (1607) Won 2-0 +181616
9sealed 61 Nishi, Hyuma (1578) Won 2-1 +171633
10draft 82 Miyake, Kyohei (1593) Lost 1-2 -181615
11draft 92 Hashimoto, Syohei (1569) Won 2-1 +171632
12draft 1 Nakamoto, Kosuke (1725) Won 2-0 +191651
13draft 13 Murase, Hiroshi (1824) Lost 1-2 -141637
14draft 56 Kakiuchi, Nobuyuki (1595) Won 2-1 +171654
15draft 34 Sato, Kimihiko (1770) ID 01654
top average opponent: 1628record: 9-4-1 new rating: 1654

Grand Prix Shizuoka 2013 (THS standard) starting rating: 1543
round table opponent (rating) result Δrating
1standard 246 Itou, Masayoshi (1485) Won 2-1 +171560
2standard 85 Umehara, Kei (1626) Lost 0-2 -171543
3standard 284 Ichikawa, Hideyuki (1499) Won 2-1 +171560
4standard 177 Agata, Tatsuki (1518) Won 2-0 +171577
5standard 177 Hoshino, Yohei (1734) Won 2-1 +211598
6standard 112 Fujikawa, Takeo (1569) Lost 0-2 -191579
7standard 135 Matsuyama, Ryousuke (1586) Lost 1-2 -171562
top average opponent: 1574record: 4-3 new rating: 1562

Grand Prix Yokohama 2013 (GTC limited) starting rating: 1483
round table opponent (rating) result Δrating
1sealed 285 Yamamoto, Kazuhide (1435) Won 2-0 +171500
2sealed 265 Muraoka, Yuki (1629) Lost 0-2 -151485
3sealed 261 Iinuma, Chihiro (1504) Won 2-1 +181503
4sealed 307 Hayashi, Masahiko (1504) Won 2-1 +181521
5sealed 183 Nakao, Munenari (1609) Lost 0-2 -161505
6sealed 292 Usami, Taro (1599) Won 2-0 +191524
7sealed 212 Yamazaki, Yuki (Nagano) (1537) Won 2-0 +191543
8sealed 244 Shiraishi, Makoto (1527) Won 2-1 +171560
9sealed 264 Ootaki, Takanori (1576) Lost 1-2 -171543
top average opponent: 1547record: 6-3 new rating: 1543

Grand Prix Kobe 2012 (DKA limited) starting rating: 1501
round table opponent (rating) result Δrating
1sealed 107 Modin, Jim (1500) Won 2-1 +181519
2sealed 107 Tamai, Katsuyoshi (1552) Lost 0-2 -171502
3sealed 351 Misono, Yasuhiro (1500) Won 2-1 +181520
4sealed 236 Fukuta, Shingo (1520) Lost 0-2 -181502
5sealed 314 yoshihara, takeshi (1500) Lost 1-2 -181484
6sealed 345 Kei U., (1485) Lost 1-2 -181466
7sealed 316 Nam, Kyung Hwan (1463) Won 2-0 +181484
8sealed 272 Cher, Pohkuang (1466) Lost 0-2 -191465
9sealed 212 Tabata, Kenichirou (1463) Won 2-0 +181483
top average opponent: 1494record: 4-5 new rating: 1483

Grand Prix Niigata 2009 (M10 limited) starting rating: 1497
round table opponent (rating) result Δrating
1sealed 32 Iwakami, Yuji (1480) Lost 0-2 -181479
2sealed 264 Sasaki, Yuuki (Iwate) (1483) Won 2-0 +181497
3sealed 178 Kokubun, Manabu (1500) Won 2-0 +181515
4sealed 145 Kondou, Keiichi (1681) Won 2-1 +211536
5sealed 129 Kikuchi, Taiki (1538) Lost 1-2 -181518
6sealed 142 Okabayashi, Masanao (1586) Lost 0-2 -171501
top average opponent: 1545record: 3-3 new rating: 1501

Grand Prix Kobe 2008 (Lorwyn block) starting rating: 1536
round table opponent (rating) result Δrating
1block 44 Andou, Takahiro (1500) Won 2-0 +171553
2block 221 Kanno, Masashi (1500) Lost 0-2 -191534
3block 199 Yamamoto, Shouta (1488) Lost 0-2 -181516
4block 328 Shibasaki, Yoshihiro (1456) Won 2-0 +161532
5block 227 sonoda, haruko (1498) Lost 0-2 -181514
6block 253 Tanaka, Tomonori (1447) Lost 1-2 -191495
7block 248 Ishitsuka, Hiroyuki (1465) Won 2-0 +171512
8block 180 Motoyama, Kazuhiko (1672) Lost 0-2 -151497
top average opponent: 1503record: 3-5 new rating: 1497

Grand Prix Shizuoka 2008 (MOR standard) starting rating: 1564
round table opponent (rating) result Δrating
1standard 97 Suzuki, Ryuuichi (1418) Won 2-0 +151579
2standard 149 Yanaseko, Kentarou (1501) Lost 1-2 -191560
3standard 136 Itou, Takanori (1461) Won 2-0 +161576
4standard 154 Yotsumoto, Yuki (1613) Lost 0-2 -181558
5standard 292 Katou, Shin'ya (1483) Lost 1-2 -191539
6standard 272 Yoneda, Taiichiro (1482) Won 2-0 +171556
7standard 254 Takao, Akinao (1563) Lost 1-2 -181538
8standard 172 Yoshimori, Sho (1483) Lost 1-2 -191519
9standard 115 Saito, Hotoku (1460) Won 2-0 +171536
top average opponent: 1496record: 4-5 new rating: 1536

Grand Prix Okayama 2004 (extended) starting rating: 1453
round table opponent (rating) result Δrating
2extended 48 Sonoda, Takayuki (1507) Won 2-1 +191472
3extended 64 Iwai, Tsuyoshi (1670) Lost 0-2 -151457
4extended 89 Komiyama, Hideki (1591) Won 2-0 +211478
5extended 44 Sugiura, Kiyohiro (1576) Won 2-1 +201498
6extended 55 Himura, Makoto (1617) Won 2-0 +201518
7extended 11 Ibamoto, Masami (1735) Won 2-1 +221540
8extended 16 Hirabayashi, Kazuya (1694) Lost 0-2 -161524
9extended 30 Kataoka, Asami (1679) Won 2-0 +211545
10extended 32 Kai, Tsubasa (1538) Draw 1-1 01545
11extended 25 Nakamura, Shuhei (1861) Lost 1-2 -121533
12extended 7 Furukawa, Yuuki (1569) Won 2-0 +181551
13extended 17 Mori, Katsuhiro (1885) Lost 0-2 -121539
14extended 13 Fujita, Tsuyoshi (1907) Won 2-0 +251564
top average opponent: 1679record: 8-4-1 new rating: 1564

Grand Prix Shizuoka 2003 (MRD limited) starting rating: 1489
round table opponent (rating) result Δrating
1sealed 228 Takahashi, Noboru (1441) Lost 0-2 -191470
2sealed 276 Tiller, Amy (1483) Won 2-0 +181488
3sealed 204 Imura, Satoshi (1466) Lost 1-2 -181470
4sealed 219 Noda, Koji (1518) Lost 1-2 -171453
top average opponent: 1477record: 1-3 new rating: 1453

Grand Prix Yokohama 2003 (Onslaught block) starting rating: 1505
round table opponent (rating) result Δrating
2block 108 Yamaguchi, Kazuki (1518) Won 2-0 +181523
3block 65 Nakamura, Keisuke (1575) Won 2-0 +191542
4block 19 Momose, Kazuyuki (1692) Lost 0-2 -151527
5block 104 Lee, Yen Han (1436) Lost 0-2 -201507
6block 154 Nakahara, Yuuya (1500) Lost 0-2 -181489
top average opponent: 1544record: 2-3 new rating: 1489

Grand Prix Kyoto 2003 (LGN limited) starting rating: 1523
round table opponent (rating) result Δrating
1sealed 43 Sanada, Tatsuhiko (1500) Won 2-1 +181541
2sealed 69 Kishimoto, Yuuichi (1484) Won 2-1 +171558
3sealed 22 Nakajima, Chikara (1679) Lost 1-2 -161542
4sealed 116 Yagi, Wataru (1479) Lost 0-2 -191523
5sealed 193 Doi, Koji (1532) Lost 0-2 -181505
top average opponent: 1535record: 2-3 new rating: 1505

Grand Prix Kobe 2001 (Invasion block) starting rating: 1500
round table opponent (rating) result Δrating
3block 175 Imajuku, Katsuji (1536) Won 2-0 +191519
4block 36 Komiya, Tadayoshi (1570) Lost 1-2 -171502
5block 94 Kurita, Daisuke (1535) Lost 1-2 -181484
6block 253 Ota, Koichi (1500) Won 2-1 +181502
7block 236 Biwaki, Toshiaki (1574) Lost 1-2 -161486
8block 254 Kaga, Ayumu (1517) Won 2-1 +181504
9block 133 Omichi, Nobuhito (1540) Won 2-1 +191523
top average opponent: 1539record: 4-3 new rating: 1523