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Okuma, Naoki
Current rating: 1530

Grand Prix Chiba 2018 (M19 limited) starting rating: 1579
round table opponent (rating) result Δrating
1sealed 116 Kitajima, Hiroyasu (1412) Won 2-1 +151594
2sealed 47 Ito, Takahiro (1501) Lost 1-2 -201574
3sealed 908 Furuichi, Takenori (1463) Lost 1-2 -201554
4sealed 994 Ichisugi, Shingo (1482) Lost 0-2 -191535
5sealed 1017 Kasuga, Koki (1425) Won 2-0 +161551
6sealed 775 Matsui, Hideyuki (1414) Lost 1-2 -211530
top average opponent: 1449record: 2-4 new rating: 1530

Grand Prix Shizuoka 2017 (AER standard) starting rating: 1595
round table opponent (rating) result Δrating
1standard 415 Hiroi, Yuta (1376) Lost 0-2 -221573
2standard 910 Furuta, Wataru (1496) Won 2-0 +161589
3standard 772 Nakagawa, Yuki (1485) Lost 0-2 -201569
4standard 976 Tsutai, Koutarou (1297) Won 2-0 +141583
5standard 812 Nishio, Yoshihiro (1369) Won 2-0 +141597
6standard 592 Tanaka, Kento (1608) Lost 0-2 -181579
top average opponent: 1438record: 3-3 new rating: 1579

Grand Prix Chiba 2015 (MM2 limited) starting rating: 1610
round table opponent (rating) result Δrating
1sealed 406 Aoki, Toshihito (1419) Lost 0-2 -221588
2sealed 436 Muroya, Issei (1484) Won 2-1 +161604
3sealed 427 Andou, Daichi (1500) Won 2-1 +171621
4sealed 309 Kawamura, Naoki (1364) Lost 1-2 -231598
5sealed 333 Koga, Kenta (1500) Won 2-0 +161614
6sealed 213 Oohashi, Toshiya (1530) Lost 0-2 -191595
top average opponent: 1466record: 3-3 new rating: 1595

Grand Prix Shizuoka 2015 (KTK limited) starting rating: 1661
round table opponent (rating) result Δrating
1sealed 799 Sano, Daiki (1527) Lost 0-2 -211640
2sealed 1034 Nishioka, Toma (1482) Won 2-0 +161656
3sealed 975 Niitani, Nobuhide (1501) Won 2-1 +151671
4sealed 770 Mishima, Wataru (1615) Lost 0-2 -191652
5sealed 937 Miyashita, Hiroaki (1500) Lost 1-2 -211631
6sealed 920 Ootake, Masanori (1453) Lost 1-2 -211610
top average opponent: 1513record: 2-4 new rating: 1610

Grand Prix Shizuoka 2013 (THS standard) starting rating: 1536
round table opponent (rating) result Δrating
1standard 93 Itou, Tai (1500) Lost 1-2 -181518
2standard 283 Nagae, Yasuji (1482) Won 2-1 +171535
3standard 229 Matsushita, Tokuo (1501) Won 2-0 +171552
4standard 187 Takahashi, Dai (1644) Lost 0-2 -161536
5standard 280 Shigemune, Akinori (1502) Won 2-0 +171553
6standard 182 Yamauchi, Kazushi (1540) Won 2-1 +181571
7standard 142 Suzuki, Ryuuichi (1633) Won 2-1 +191590
8standard 71 Kawasaki, Takeshi (1529) Won 2-0 +171607
9standard 203 Kato, Kensuke (1719) Won 2-0 +201627
10standard 79 Chen, Shao-Lun (1511) Won 2-1 +161643
11standard 46 Hirayama, Atsushi (1742) Lost 0-2 -161627
12standard 62 Son, Kii (1569) Won 2-0 +171644
13standard 53 Hasegawa, Takahiro (1554) Won 2-0 +161660
14standard 21 Arai, Yusuke (1613) Lost 1-2 -191641
15standard 63 Itou, Motoaki (1721) Won 2-1 +201661
top average opponent: 1584record: 11-4 new rating: 1661

Grand Prix Yokohama 2013 (GTC limited) starting rating: 1498
round table opponent (rating) result Δrating
1sealed 335 Endo, Jun'Ichi (1624) Won 2-0 +211519
2sealed 151 Matsuda, Yuuichi (1518) Won 2-0 +181537
3sealed 25 Nakaoka, Koshiro (1459) Lost 0-2 -201517
4sealed 188 Ooshima, Hidenori (1475) Won 2-1 +171534
5sealed 88 Yasunaka, Ryouhei (1573) Lost 0-2 -171517
6sealed 164 Sato, Shinya (1544) Won 2-1 +191536
7sealed 138 Komada, Mitsuhiko (1509) Won 2-0 +171553
8sealed 208 Nakao, Munenari (1623) Lost 0-2 -171536
top average opponent: 1541record: 5-3 new rating: 1536

Grand Prix Yokohama 2012 (modern) starting rating: 1500
round table opponent (rating) result Δrating
1modern 121 Sumikawa, Daiki (1500) Won 2-0 +181518
2modern 244 Shiota, Akihiko (1523) Lost 0-2 -181500
3modern 414 Matsumoto, Kazuo (1466) Won 2-0 +171517
4modern 233 Misumi, Kyouhei (1514) Lost 1-2 -181499
5modern 506 Sato, Hisao (1435) Lost 1-2 -191480
6modern 512 Yamada, Michihiro (1481) Won 2-1 +181498
top average opponent: 1487record: 3-3 new rating: 1498