Fujiwara, Koichi
Current rating: 1394
Record: 11-19
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 41 | Tonouchi, Keita (1624) | Lost 0-2 | -151402 |
| 2standard | 72 | Kawasaki, Hirotaka (1742) | Lost 0-2 | -121390 |
| 3standard | 84 | Makino, Takahito (1388) | Won 2-1 | +181408 |
| 4standard | 81 | Matsubara, Yuusuke (1622) | Lost 1-2 | -141394 |
| top | average opponent: 1594record: 1-3 | new rating: 1394 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 53 | Komaki, Shota (1445) | Won 2-0 | +191428 |
| 2pioneer | 230 | Tanaka, Tomonori (1396) | Lost 1-2 | -181410 |
| 3pioneer | 677 | Osanai, Yuuma (1545) | Won 2-0 | +201430 |
| 4pioneer | 268 | Omura, Hajime (1455) | Won 2-0 | +181448 |
| 5pioneer | 237 | Tanaka, Fumiya 1717 (1584) | Lost 0-2 | -151433 |
| 6pioneer | 289 | Imaizumi, Ryo (1521) | Lost 1-2 | -161417 |
| top | average opponent: 1491record: 3-3 | new rating: 1417 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 42 | Kaga, Hiroyuki (1717) | Lost 0-2 | -131442 |
| 2standard | 511 | Koga, Ryuji (1589) | Won 2-0 | +201462 |
| 3standard | 496 | Karasawa, Ryuichi (1832) | Lost 0-2 | -111451 |
| 4standard | 803 | Matsushima, Yuki (1308) | Lost 0-2 | -211430 |
| 5standard | 840 | Arai, Ikki (1279) | Lost 1-2 | -211409 |
| top | average opponent: 1545record: 1-4 | new rating: 1409 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Seguchi, Shinichirou (1563) | Lost 0-2 | -171472 |
| 2sealed | 720 | Nishio, Masato (1467) | Won 2-0 | +181490 |
| 3sealed | 581 | Noguchi, Ichiro (1500) | Lost 0-2 | -181472 |
| 4sealed | 945 | Ishizaka, Akira (1481) | Won 2-1 | +181490 |
| 5sealed | 899 | Kashiwagi, Yuki (1433) | Lost 1-2 | -191471 |
| 6sealed | 833 | Oshima, Yuki (1572) | Lost 0-2 | -161455 |
| top | average opponent: 1503record: 2-4 | new rating: 1455 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 722 | Kakimi, Yoshinori (1504) | Lost 0-2 | -181489 |
| top | record: 0-1 | new rating: 1489 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 17 | Kurahashi, Hironori (1545) | Lost 1-2 | -171483 |
| 2sealed | 867 | Nishimura, Hajime (1450) | Won 2-0 | +171500 |
| 3sealed | 1020 | Hamaguchi, Shoji (1434) | Won 2-1 | +171517 |
| 4sealed | 500 | Yokota, Daiki (1467) | Won 2-0 | +171534 |
| 5sealed | 214 | Gao, Tan (1820) | Lost 1-2 | -131521 |
| 6sealed | 407 | Chew, Kelvin (1719) | Lost 0-2 | -141507 |
| 7sealed | 625 | Tomomizu, Takuya (1470) | Won 2-1 | +171524 |
| 8sealed | 565 | Shimizu, Haruki (1558) | Lost 1-2 | -171507 |
| top | average opponent: 1558record: 4-4 | new rating: 1507 | ||