Kohira, Yoshitaka
Current rating: 1566
Record: 21-18-1
| Grand Prix Yokohama 2019 (modern) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 521 | Yoshida, Yasuhide (1500) | Lost 0-2 | -191556 |
| 2modern | 804 | Yamaguchi, Koutarou (1591) | Won 2-1 | +191575 |
| 3modern | 814 | Shoji, Masato (1483) | Won 2-1 | +161591 |
| 4modern | 475 | Sano, Takumi (1415) | Lost 0-2 | -211570 |
| 5modern | 564 | Ogawa, Yusuke (1446) | Won 2-0 | +161586 |
| 6modern | 506 | Inoue, Ojiro (1480) | Lost 0-2 | -201566 |
| top | average opponent: 1486record: 3-3 | new rating: 1566 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1597 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 663 | Narumi, Masaru (1378) | Lost 0-2 | -221575 |
| top | record: 0-1 | new rating: 1575 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 209 | Tamura, Kazuhito (1500) | Won 2-0 | +171580 |
| 2legacy | 53 | Tachibana, Kentarou (1578) | Won 2-0 | +181598 |
| 3legacy | 35 | Yao, Shunsuke (1733) | Lost 0-2 | -161582 |
| 4legacy | 203 | Kamioka, Masayuki (1582) | Won 2-0 | +181600 |
| 5legacy | 262 | Komiyama, Kenichiro (1566) | Won 2-1 | +181618 |
| 6legacy | 153 | Otsuka, Yasumasa (1428) | Won 2-1 | +141632 |
| 7legacy | 74 | Partinen, Simo (1686) | Lost 0-2 | -171615 |
| 8legacy | 160 | Ishikawa, Takuma 3754 (1623) | Lost 0-2 | -181597 |
| top | average opponent: 1587record: 5-3 | new rating: 1597 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 375 | Hickling, Adam (1517) | Lost 1-2 | -171451 |
| 3legacy | 702 | Itimura, Kouhei (1550) | Won 2-0 | +201471 |
| 4legacy | 758 | Yuuya, Yoshihara (1514) | Won 2-0 | +181489 |
| 5legacy | 246 | Saida, Toshihiro (1679) | Lost 0-2 | -141475 |
| 6legacy | 679 | Tanaka, Satosi (1503) | Won 2-0 | +181493 |
| 7legacy | 519 | Chung, Jason (1901) | Lost 0-2 | -111482 |
| 8legacy | 578 | Shibata, Masataka (1539) | Won 2-0 | +191501 |
| 9legacy | 313 | Okuyama, Kouhei (1479) | Won 2-1 | +181519 |
| 10legacy | 266 | Tokuda, Shin'Yuki (1550) | Won 2-1 | +191538 |
| 11legacy | 204 | Arita, Kazuhiro (1454) | Won 2-0 | +161554 |
| 12legacy | 123 | Tsukahara, Kazuto (1650) | Won 2-1 | +201574 |
| 13legacy | 91 | Brown, Eric (1753) | Lost 1-2 | -151559 |
| 14legacy | 110 | Liu, Zhuoran (1795) | Lost 1-2 | -141545 |
| 15legacy | 185 | Komiyama, Kouhei (1536) | Won 2-0 | +181563 |
| top | average opponent: 1601record: 9-5 | new rating: 1563 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 173 | Katoh, Daisuke (1551) | Lost 1-2 | -181487 |
| 3legacy | 400 | Nagai, Keisuke (1498) | Lost 1-2 | -171470 |
| 4legacy | 352 | Ono, Daisuke (1352) | Won 2-0 | +151485 |
| 5legacy | 260 | Ota, Kan (1498) | Draw 1-1 | +11486 |
| 6legacy | 279 | Mukai, Kentaro (1498) | Lost 0-2 | -181468 |
| top | average opponent: 1480record: 1-3-1 | new rating: 1468 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 226 | Juumonji, Ryou (1777) | Lost 0-2 | -131487 |
| 3modern | 408 | Hidaka, Ayumi (1575) | Won 2-1 | +201507 |
| 4modern | 300 | Ooi, Masaki (1518) | Won 2-0 | +181525 |
| 5modern | 228 | Washimi, Kazuo (1472) | Lost 1-2 | -191506 |
| 6modern | 270 | hirochi, kenji (1524) | Won 2-1 | +181524 |
| 7modern | 169 | Kosuga, Shuhei (1437) | Lost 0-2 | -191505 |
| top | average opponent: 1551record: 3-3 | new rating: 1505 | ||