Naka, Hidehiro
Current rating: 1448
Record: 29-34-6
| Grand Prix Kobe 2017 (modern) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 372 | Hokumura, Tatsuro (1497) | Lost 0-2 | -161398 |
| 2modern | 746 | Sakai, Kengo (1357) | Lost 1-2 | -191379 |
| 3modern | 1209 | Sasaki, Yasuhiro (1684) | Won 2-1 | +241403 |
| 4modern | 1153 | Tanaka, Kengo (1486) | Won 2-1 | +191422 |
| 5modern | 1023 | Takashima, Ryuichi (1520) | Lost 0-2 | -161406 |
| 6modern | 942 | Yamada, Yoshitaka (1487) | Won 2-0 | +191425 |
| 7modern | 929 | Funabiki, Yuusuke (1534) | Won 2-0 | +201445 |
| 8modern | 652 | Kase, Koichi (1511) | Won 2-0 | +201465 |
| 9modern | 454 | Bang, Sangmun (1534) | Lost 0-2 | -171448 |
| top | average opponent: 1512record: 5-4 | new rating: 1448 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 240 | Fukuda, You (1445) | Lost 0-2 | -171404 |
| 2standard | 845 | Oohashi, Keisuke (1608) | Lost 0-2 | -151389 |
| 3standard | 1231 | Nagai, Sho (1474) | Lost 0-2 | -161373 |
| 4standard | 1277 | Takahashi, Akira (1362) | Lost 0-2 | -181355 |
| 5standard | 1252 | Koiwai, Seiko (1429) | Won 2-0 | +191374 |
| 6standard | 1141 | Kimura, Takuya (1457) | Lost 1-2 | -161358 |
| 7standard | 1081 | Tsunemoto, Hitoshi (1425) | Won 2-1 | +191377 |
| 8standard | 933 | Inoue, Yuki(4767) (1443) | Won 2-0 | +191396 |
| 9standard | 788 | Asada, Hiroki (1421) | Won 2-0 | +181414 |
| top | average opponent: 1452record: 4-5 | new rating: 1414 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1400 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 94 | Sugi, Takahiro (1473) | Won 2-0 | +201420 |
| 2standard | 670 | Avilla, Salvador (1517) | Draw 1-1 | +11421 |
| 3standard | 790 | Abe, Naohisa (1500) | Won 2-1 | +201441 |
| 4standard | 404 | Suzuki, Akira (1601) | Lost 0-2 | -151426 |
| 5standard | 751 | Matsuo, Yoshiyuki (1601) | Draw 1-1 | +31429 |
| 6standard | 979 | Setsompop, Mingrerk (1506) | Won 2-0 | +191448 |
| 7standard | 701 | Hjortness, Joel (1540) | Draw 0-0 | +21450 |
| 8standard | 640 | Iwamoto, Nobuyuki (1785) | Lost 0-1 | -121438 |
| 9standard | 754 | Mochiduki, Masashi (1510) | Lost 0-2 | -171421 |
| top | average opponent: 1559record: 3-3-3 | new rating: 1421 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 93 | Ito, Ryutaro (1463) | Won 2-0 | +171503 |
| 2sealed | 476 | Mashima, Mitsuharu (1804) | Lost 1-2 | -121491 |
| 3sealed | 871 | Shikama, Hideyasu (1417) | Lost 1-2 | -201471 |
| 4sealed | 1158 | Kawakita, Kairi (1555) | Lost 1-2 | -161455 |
| 5sealed | 1025 | Kadoyoshi, Tomonori (1445) | Lost 1-2 | -181437 |
| 6sealed | 1057 | Tsuchida, Takashi (1346) | Lost 1-2 | -201417 |
| 7sealed | 944 | Hashimoto, Syohei (1495) | Lost 0-2 | -171400 |
| top | average opponent: 1504record: 1-6 | new rating: 1400 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 574 | Okazaki, Hideki (1360) | Lost 1-2 | -221535 |
| 2standard | 829 | Shigemune, Akinori (1418) | Won 2-0 | +161551 |
| 3standard | 1036 | Itou, Kenta (1500) | Lost 1-2 | -191532 |
| 4standard | 925 | Izumi, Yuta (1482) | Won 2-0 | +171549 |
| 5standard | 867 | Yamakawa, Hiroaki (1432) | Lost 0-2 | -201529 |
| 6standard | 778 | Sano, Shigeaki (1318) | Lost 1-2 | -221507 |
| 7standard | 795 | Fukuda, Yoshifumi (1483) | Won 2-0 | +181525 |
| 8standard | 610 | Sonomura, Yuusuke (1436) | Lost 0-2 | -201505 |
| 9standard | 531 | Yamasita, Akinori (1416) | Lost 0-2 | -191486 |
| top | average opponent: 1427record: 3-6 | new rating: 1486 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1297 | Aoyama, Yuuta (1463) | Draw 1-1 | -11526 |
| 2sealed | 1235 | Shimizu, Kouki (1482) | Draw 1-1 | -11525 |
| 3sealed | 1285 | Ohno, Naomi (1483) | Won 2-0 | +181543 |
| 4sealed | 1152 | Kobayashi, Makoto (1468) | Won 2-1 | +161559 |
| 5sealed | 1033 | Andou, Tomoyuki (1458) | Draw 1-1 | -21557 |
| 6sealed | 1052 | Kida, Masata (1574) | Won 2-0 | +191576 |
| 7sealed | 918 | Uchino, Jun (1533) | Lost 0-2 | -191557 |
| top | average opponent: 1494record: 3-1-3 | new rating: 1557 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 945 | Hotta, Kei (1500) | Won 2-1 | +181505 |
| 2sealed | 742 | Kodama, Yuu (1492) | Won 2-0 | +181523 |
| 3sealed | 696 | Moriya, Erika (1549) | Won 2-0 | +191542 |
| 4sealed | 696 | Hoshino, Tomoyuki (1517) | Lost 0-2 | -191523 |
| 5sealed | 715 | Satou, Tomoyuki (1534) | Won 2-1 | +181541 |
| 6sealed | 646 | Takeuchi, Junnya (1565) | Lost 0-2 | -171524 |
| 7sealed | 778 | Shoji, Tatsuro (1644) | Won 2-0 | +201544 |
| 8sealed | 684 | Tachibana, Kentarou (1614) | Lost 1-2 | -171527 |
| top | average opponent: 1552record: 5-3 | new rating: 1527 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 174 | Nakamura, Masanobu (1481) | Lost 1-2 | -181467 |
| 2modern | 307 | Akase, Daisuke (1482) | Won 2-0 | +191486 |
| 3modern | 275 | Shibuya, Takuma (1678) | Won 2-1 | +211507 |
| 4modern | 234 | Watanabe, Yusuke2795 (1520) | Won 2-0 | +181525 |
| 5modern | 91 | Sasaki, Masaya (1350) | Lost 0-2 | -211504 |
| 6modern | 267 | Kawaguchi, Takahiro (1563) | Lost 0-2 | -171487 |
| top | average opponent: 1512record: 3-3 | new rating: 1487 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 826 | Hama, Shunsuke (1500) | Won 2-0 | +181518 |
| 2sealed | 751 | Whittaker, Stephen (1539) | Won 2-0 | +181536 |
| 3sealed | 831 | Chijimi, Keiichi (1709) | Lost 0-2 | -141522 |
| 4sealed | 947 | Kou, Yoshiki (1518) | Lost 0-2 | -191503 |
| 5sealed | 1001 | Toda, Takahiro (1500) | Lost 0-2 | -181485 |
| top | average opponent: 1553record: 2-3 | new rating: 1485 | ||