Yamaguchi, Naohiro
Current rating: 1358
Record: 23-36-2
Grand Prix Shizuoka 2003Grand Prix Sendai 2004Grand Prix Shizuoka 2013Grand Prix Nagoya 2014Grand Prix Shizuoka 2015Grand Prix Chiba 2015Grand Prix Kobe 2015Grand Prix Nagoya 2016Grand Prix Shizuoka 2017Grand Prix Kobe 2017Grand Prix Kyoto 2017Grand Prix Shizuoka 2018 (standard)Grand Prix Chiba 2019
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1364 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 584 | Toda, Shinya (1500) | Lost 0-2 | -161348 |
| 2sealed | 774 | Yamao, Tsuyoshi (1478) | Won 2-0 | +211369 |
| 3sealed | 749 | Hosak, Daniel (1503) | Won 2-0 | +201389 |
| 4sealed | 753 | Miyasaka, Sho (1686) | Lost 0-2 | -131376 |
| 5sealed | 719 | Sekiya, Hiroshi (1369) | Lost 1-2 | -181358 |
| top | average opponent: 1507record: 2-3 | new rating: 1358 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 448 | Yokoyama, Takahiro (1469) | Won 2-1 | +201397 |
| 2standard | 274 | Konishi, Akio (1526) | Lost 1-2 | -161381 |
| 3standard | 724 | Liang, Zhiyong (1510) | Draw 1-1 | +21383 |
| 4standard | 801 | Tsutai, Koutarou (1295) | Lost 0-2 | -191364 |
| top | average opponent: 1450record: 1-2-1 | new rating: 1364 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1376 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 504 | Yoshino, Tomoki (1500) | Won 2-1 | +201396 |
| 2sealed | 362 | Banno, Kunihiko (1591) | Lost 1-2 | -141382 |
| 3sealed | 898 | Liao, Shih-Ming (1480) | Lost 0-2 | -171365 |
| 4sealed | 1002 | Kameyama, Shingo (1437) | Won 2-1 | +201385 |
| 5sealed | 625 | Hamaguchi, Shoji (1476) | Won 2-1 | +191404 |
| 6sealed | 535 | Usui, Haruki (1786) | Lost 0-2 | -111393 |
| 7sealed | 581 | Miyano, Yosuke (1503) | Lost 0-2 | -161377 |
| top | average opponent: 1539record: 3-4 | new rating: 1377 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1382 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 665 | Kyutoku, Ryuichi (1500) | Lost 1-2 | -161366 |
| 2modern | 659 | Kanaya, Akihiro (1367) | Won 2-1 | +181384 |
| 3modern | 1141 | Minobe, Yoshihiro (1495) | Lost 0-2 | -161368 |
| 4modern | 1010 | Okada, Yuki 9361 (1482) | Lost 1-2 | -161352 |
| 5modern | 1177 | Nekomiya, Kagenaga (1463) | Won 2-1 | +201372 |
| 6modern | 892 | Kobe, Shohei (1482) | Won 2-1 | +201392 |
| 7modern | 910 | Tai, Sinoduka (1471) | Lost 0-2 | -161376 |
| top | average opponent: 1466record: 3-4 | new rating: 1376 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 720 | Higurashi, Yukinao (1483) | Lost 1-2 | -171416 |
| 2standard | 872 | Saitou, Yuusuke (1465) | Lost 1-2 | -171399 |
| 3standard | 1174 | Kanayama, Ryo (1467) | Lost 1-2 | -171382 |
| top | average opponent: 1472record: 0-3 | new rating: 1382 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 400 | Imamura, Yuki (1500) | Draw 1-1 | +21399 |
| 2sealed | 605 | Nakano, Kenta (1500) | Won 2-1 | +201419 |
| 3sealed | 594 | Akase, Kousuke (1464) | Lost 1-2 | -181401 |
| 4sealed | 862 | Takeshita, Yuuki (1486) | Won 2-0 | +201421 |
| 5sealed | 567 | Watanabe, Tsubasa (1533) | Won 2-1 | +201441 |
| 6sealed | 347 | Sato, Takatoshi (1852) | Lost 0-2 | -111430 |
| 7sealed | 950 | Kakizawa, Tatunori (1498) | Won 2-0 | +191449 |
| 8sealed | 382 | Shinzato, Kazuaki (1553) | Lost 0-2 | -161433 |
| top | average opponent: 1548record: 4-3-1 | new rating: 1433 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1406 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 300 | Nishigami, Tatsuya (1500) | Won 2-1 | +201426 |
| 2standard | 65 | Kitakaze, Asuka (1478) | Lost 0-2 | -171409 |
| 3standard | 908 | Tanaka, Keiichi (1474) | Won 2-0 | +191428 |
| 4standard | 420 | Tsuji, Naoto (1541) | Lost 0-2 | -161412 |
| 5standard | 723 | Kurihara, Yuuji (1573) | Lost 0-2 | -151397 |
| top | average opponent: 1513record: 2-3 | new rating: 1397 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Yokoyama, Shunta (1500) | Won 2-0 | +191437 |
| 2sealed | 180 | Shu, Incon (1518) | Lost 0-2 | -161421 |
| 3sealed | 372 | Kubo, Katsutoshi (1500) | Won 2-1 | +191440 |
| 4sealed | 144 | Hyoudou, Kouichi (1444) | Lost 1-2 | -181422 |
| 5sealed | 412 | Hanaoka, Shinichiro (1524) | Lost 1-2 | -161406 |
| top | average opponent: 1497record: 2-3 | new rating: 1406 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Niwa, Ryuuta (1526) | Won 2-0 | +201451 |
| 2sealed | 185 | Hama, Shunsuke (1421) | Won 2-0 | +171468 |
| 3sealed | 194 | Ishida, Shoichi (1525) | Lost 0-2 | -171451 |
| 4sealed | 168 | Kokura, Hironori (1522) | Lost 0-2 | -171434 |
| 5sealed | 284 | Ito, Kazuma (1499) | Lost 0-2 | -161418 |
| top | average opponent: 1499record: 2-3 | new rating: 1418 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 204 | Takashimizu, Makoto (1427) | Lost 1-2 | -191448 |
| 2sealed | 302 | Nagase, Hirofumi (1446) | Won 2-0 | +181466 |
| 3sealed | 258 | Sugisawa, Daiki (1491) | Lost 1-2 | -171449 |
| 4sealed | 334 | Kondo, Masahiro (1472) | Lost 1-2 | -181431 |
| top | average opponent: 1459record: 1-3 | new rating: 1431 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 628 | Yamaguchi, Shota (1500) | Won 2-1 | +191467 |
| top | record: 1-0 | new rating: 1467 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Sugimori, Kazutaka (1536) | Won 2-1 | +191497 |
| 2sealed | 62 | Anazawa, Yoshikazu (1689) | Lost 1-2 | -141483 |
| 3sealed | 145 | Maruyama, Koji (1500) | Lost 0-2 | -181465 |
| 4sealed | 181 | Takeuchi, Ryota (1504) | Lost 0-2 | -171448 |
| top | average opponent: 1557record: 1-3 | new rating: 1448 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Nakao, Munenari (1433) | Lost 0-2 | -191481 |
| 2sealed | 242 | Mitsui, Hideo (1457) | Lost 1-2 | -191462 |
| 3sealed | 261 | Deyama, Hirofumi (1356) | Won 2-1 | +161478 |
| top | average opponent: 1416record: 1-2 | new rating: 1478 | ||