Naka, Keiji
Current rating: 1538
Record: 30-28-2
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 469 | Kitsunezuka, Masanori (1554) | Lost 1-2 | -191564 |
| 2standard | 1072 | Mizuno, Tomoya (1463) | Won 2-0 | +161580 |
| 3standard | 1355 | Yasuji, Go (1500) | Lost 1-2 | -191561 |
| 4standard | 1203 | Emerson, Stuart (1405) | Won 2-0 | +151576 |
| 5standard | 862 | Nishihara, Kazushi (1499) | Lost 0-2 | -191557 |
| 6standard | 1311 | Iwayama, Masatomo (1498) | Lost 0-2 | -191538 |
| top | average opponent: 1486record: 2-4 | new rating: 1538 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 767 | Azekawa, Tomoyuki (1603) | Won 2-0 | +191595 |
| 2sealed | 453 | Ogura, Shigeru (1406) | Lost 0-2 | -211574 |
| 3sealed | 861 | Kobayashi, Hiroaki (1368) | Won 2-1 | +141588 |
| 4sealed | 585 | Fuzita, Syunsuke (1518) | Won 2-0 | +171605 |
| 5sealed | 481 | Yoshida, Kei (1567) | Lost 0-2 | -191586 |
| 6sealed | 666 | Nakamura, Yuki 6139 (1474) | Won 2-0 | +161602 |
| 7sealed | 434 | Mizuno, Fumihiro (1541) | Lost 1-2 | -191583 |
| top | average opponent: 1497record: 4-3 | new rating: 1583 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 137 | Kiyohara, Yuji (1395) | Won 2-0 | +161535 |
| 2standard | 381 | Koizumi, Hiroki (1482) | Won 2-0 | +171552 |
| 3standard | 275 | Takenaga, Tomohiro (1628) | Lost 1-2 | -161536 |
| 4standard | 638 | Sasaki, Shou (1491) | Won 2-1 | +171553 |
| 5standard | 483 | Okamoto, Yuuya (1536) | Won 2-1 | +171570 |
| 6standard | 286 | Ishii, Wataru (1537) | Won 2-1 | +181588 |
| 7standard | 55 | Ogata, Nobuhiko (1663) | Won 2-1 | +191607 |
| 8standard | 55 | Takagi, Takeshi (1764) | Lost 1-2 | -151592 |
| 9standard | 192 | Takahashi, Nozomu (1726) | Lost 0-2 | -161576 |
| top | average opponent: 1580record: 6-3 | new rating: 1576 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Katou, Takayoshi (1471) | Won 2-1 | +171542 |
| 2sealed | 113 | Shigeno, Motoki (1516) | Lost 0-2 | -191523 |
| 3sealed | 488 | Nakagawa, Terushi (1500) | Won 2-1 | +181541 |
| 4sealed | 185 | Nakata, Akihito (1517) | Won 2-1 | +171558 |
| 5sealed | 138 | Nakamatu, Hirohumi (1443) | Lost 0-2 | -201538 |
| 6sealed | 262 | Kawada, Kyogo (1491) | Lost 1-2 | -191519 |
| top | average opponent: 1490record: 3-3 | new rating: 1519 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 547 | Utsumi, Takayuki (1542) | Lost 1-2 | -181489 |
| 2standard | 728 | Fujikuma, Satoshi (1445) | Won 2-1 | +181507 |
| 3standard | 713 | Idesawa, Ryo (1549) | Lost 1-2 | -181489 |
| 4standard | 813 | Kinoshita, Kei (1475) | Won 2-1 | +181507 |
| 5standard | 765 | Tsutsumi, Kouhei (1500) | Won 2-0 | +181525 |
| 6standard | 677 | Kashi, Touru (1522) | Won 2-1 | +181543 |
| 7standard | 649 | Miyawaki, Takahiro (1547) | Lost 0-2 | -181525 |
| 8standard | 698 | Kato, Yoichi (1530) | Won 2-1 | +181543 |
| 9standard | 742 | Yamamoto, Yuichiro (1513) | Lost 0-2 | -181525 |
| top | average opponent: 1514record: 5-4 | new rating: 1525 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 479 | Kawasaki, Hirotaka (1500) | Won 2-1 | +181526 |
| 2standard | 345 | Sato, Yasunori (1519) | Lost 1-2 | -181508 |
| 3standard | 486 | Adachi, Junya (1486) | Won 2-1 | +171525 |
| 4standard | 352 | Ishiguro, Satoshi (Aichi) (1482) | Lost 0-2 | -181507 |
| 5standard | 584 | Uemura, Naoki (1515) | Won 2-0 | +181525 |
| 6standard | 287 | Aoki, Yoshitsugu (1531) | Lost 0-2 | -181507 |
| top | average opponent: 1505record: 3-3 | new rating: 1507 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 12 | Oonishi, Tatsuya (1519) | Draw 1-1 | +11486 |
| 5standard | 64 | Noro, Hitoshi (1544) | Won 2-0 | +191505 |
| 6standard | 32 | Senba, Kotaro (1639) | Lost 1-2 | -161489 |
| 7standard | 84 | Ito, Keigo (1650) | Draw 1-1 | +31492 |
| 8standard | 130 | Matsuyama, Satoshi (1642) | Won 2-1 | +211513 |
| 9standard | 85 | Katagiri, Shinichi (1682) | Won 2-0 | +211534 |
| 10standard | 51 | Obata, Shiou (1422) | Lost 1-2 | -201514 |
| 11standard | 57 | Nitobe, Takayuki (1620) | Lost 1-2 | -161498 |
| 12standard | 60 | Masuno, Ryosuke (1808) | Lost 1-2 | -131485 |
| 13standard | 61 | Takahashi, Keiji (1505) | Won 2-0 | +191504 |
| 14standard | 31 | Oosaka, Yuusuke (1762) | Lost 0-2 | -141490 |
| 15standard | 6 | iwase, yoshikazu (1473) | Won 2-0 | +181508 |
| top | average opponent: 1605record: 5-5-2 | new rating: 1508 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 212 | Oonishi, Takahisa (1500) | Lost 0-2 | -181482 |
| 2block | 344 | Tanaka, Yousuke (1612) | Won 2-1 | +201502 |
| 3block | 211 | Usagawa, Akinari (1504) | Won 2-0 | +181520 |
| 4block | 149 | Yamazaki, Takahiro (1454) | Lost 1-2 | -191501 |
| 5block | 244 | Chen, Liang (1612) | Lost 1-2 | -161485 |
| top | average opponent: 1536record: 2-3 | new rating: 1485 | ||