Osawa, Hiroaki
Current rating: 1558
Record: 17-16-2
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 364 | Tamura, Kenji (1548) | Won 2-1 | +201458 |
| 2legacy | 226 | Taniguchi, Yu (1368) | Lost 0-2 | -201438 |
| 3legacy | 337 | Nagase, Iori (1502) | Won 2-0 | +191457 |
| 4legacy | 334 | Suzuki, Ryuuichi (1325) | Won 2-0 | +161473 |
| 5legacy | 163 | Endo, Natsumi (1610) | Won 2-1 | +211494 |
| 6legacy | 64 | Kobayashi, Tatsuumi (1899) | Lost 1-2 | -111483 |
| 7legacy | 186 | Abe, Ken'Ichi (1811) | Won 2-0 | +231506 |
| 8legacy | 144 | Kawaguchi, Takashi (1655) | Won 2-1 | +211527 |
| 9legacy | 103 | Kawai, Yuusuke 4514 (1527) | Won 2-1 | +181545 |
| 10legacy | 44 | Ookawa, Akihiro (1731) | Won 2-1 | +211566 |
| 11legacy | 35 | Sakuramoto, Takashi (1678) | Lost 0-2 | -161550 |
| 12legacy | 49 | Watanabe, Takumi (1602) | Lost 0-2 | -171533 |
| 13legacy | 84 | Nakanishi, Kazuki (1500) | Won 2-1 | +181551 |
| 14legacy | 66 | Suzuike, Fumiyasu (1836) | Won 2-1 | +231574 |
| 15legacy | 45 | Ishikawa, Takuma 3754 (1688) | Lost 1-2 | -161558 |
| top | average opponent: 1619record: 10-5 | new rating: 1558 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 596 | Itou, Ryousuke (1501) | Lost 1-2 | -171433 |
| 2sealed | 650 | Uchida, Tomoya (1481) | Lost 1-2 | -171416 |
| 3sealed | 997 | Shibue, Takahiro (1329) | Won 2-0 | +171433 |
| 4sealed | 889 | Murata, Kouji (1480) | Won 2-1 | +181451 |
| 5sealed | 670 | Neki, Haruyuki (1461) | Draw 1-1 | +11452 |
| 6sealed | 742 | Wakita, Tomoyuki (1695) | Lost 1-2 | -141438 |
| top | average opponent: 1491record: 2-3-1 | new rating: 1438 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 466 | Kubota, Sin (1500) | Won 2-1 | +191504 |
| 2modern | 423 | Kokubu, Yusuke (1556) | Draw 1-1 | +11505 |
| 3modern | 682 | Maeda, Masaki (1468) | Lost 1-2 | -191486 |
| 4modern | 914 | Inui, Takeshi (1508) | Won 2-1 | +181504 |
| 5modern | 649 | Nishida, Tetsushi (1504) | Lost 1-2 | -181486 |
| 6modern | 845 | Shoji, Taku (1521) | Lost 0-2 | -171469 |
| 7modern | 981 | Kobayashi, Toshio (1430) | Lost 1-2 | -191450 |
| top | average opponent: 1498record: 2-4-1 | new rating: 1450 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 678 | Tanaka, Masaki (1500) | Won 2-1 | +181518 |
| 2legacy | 288 | Sugisawa, Tsuyoshi (1578) | Lost 1-2 | -171501 |
| 3legacy | 977 | Iijima, Yuuki (1485) | Won 2-1 | +181519 |
| 4legacy | 398 | Asakawa, Hiroya (1537) | Won 2-0 | +181537 |
| 5legacy | 474 | Nomura, Hidehiro (1679) | Lost 1-2 | -151522 |
| 6legacy | 623 | Hata, Kazuhei (1517) | Lost 1-2 | -181504 |
| 7legacy | 820 | Shiomi, Hirohisa (1494) | Lost 1-2 | -191485 |
| top | average opponent: 1541record: 3-4 | new rating: 1485 | ||