Osuga, Hiroaki
Current rating: 1239
Record: 25-57-6
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1230 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 224 | Miotani, Tomoya (1662) | Lost 1-2 | -111219 |
| 3pioneer | 544 | Yajima, Hiromichi (1430) | Lost 0-2 | -141205 |
| 4pioneer | 715 | Imamura, Takahiro (1480) | Won 2-0 | +231228 |
| 5pioneer | 655 | Kokawa, Tsunao (1377) | Won 2-1 | +211249 |
| 6pioneer | 391 | Omi, Akeshi (1450) | Lost 0-2 | -151234 |
| 7pioneer | 422 | Chen, Bonn (1380) | Lost 1-2 | -151219 |
| 8pioneer | 402 | Katagiri, Toshiki (1323) | Won 2-0 | +201239 |
| top | average opponent: 1443record: 3-4 | new rating: 1239 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1168 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 170 | Kai, Masatoshi (1546) | Won 2-1 | +251193 |
| 3standard | 297 | Niwa, Keita (1606) | Lost 1-2 | -111182 |
| 4standard | 547 | Nishikawa, Haruyoshi (1479) | Won 2-0 | +231205 |
| 5standard | 284 | Tanaka, Fumiya 1717 (1638) | Won 2-1 | +261231 |
| 6standard | 207 | Kageyama, Taiki (1464) | Won 2-1 | +221253 |
| 7standard | 40 | Ishii, Taisuke (1712) | Lost 0-2 | -101243 |
| 8standard | 191 | Mimido, Ryuji (1542) | Lost 0-2 | -131230 |
| top | average opponent: 1570record: 4-3 | new rating: 1230 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1208 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 210 | Nagami, Youichi (1637) | Lost 0-2 | -101198 |
| 3sealed | 656 | Moriya, Erika (1612) | Won 2-1 | +251223 |
| 4sealed | 657 | Uetsu, Masashi (1538) | Lost 1-2 | -131210 |
| 5sealed | 556 | Suganuma, Kathuhiro (1390) | Lost 0-2 | -141196 |
| 6sealed | 746 | Yucheng, Gai (1419) | Lost 0-2 | -141182 |
| 7sealed | 639 | Noguchi, Takeshi (1449) | Lost 1-2 | -141168 |
| top | average opponent: 1507record: 1-5 | new rating: 1168 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1227 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 113 | Suenaga, Hirohisa (1322) | Lost 0-2 | -161211 |
| 2modern | 896 | Yoshimura, Naoki (1496) | Lost 0-2 | -131198 |
| 3modern | 1088 | Ichikawa, Tomokazu (1513) | Lost 0-2 | -121186 |
| 4modern | 1188 | Fujioka, Kai (1447) | Won 2-0 | +221208 |
| top | average opponent: 1444record: 1-3 | new rating: 1208 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1182 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 85 | Hanawa, Atsushi (1440) | Lost 1-2 | -131169 |
| 2standard | 527 | Utida, Koudai (1405) | Won 2-1 | +221191 |
| 3standard | 604 | Igarashi, Ryosuke (1466) | Won 2-1 | +231214 |
| 4standard | 619 | Fujita, Osamu (1700) | Lost 0-2 | -101204 |
| 5standard | 707 | Nakao, Munenari (1651) | Lost 0-2 | -101194 |
| 6standard | 632 | Soeda, Kohei (1379) | Won 2-1 | +211215 |
| 7standard | 176 | Matsuda, Hideyuki (1566) | Lost 1-2 | -121203 |
| 8standard | 522 | Ikeda, Masahito (1542) | Won 2-1 | +241227 |
| top | average opponent: 1519record: 4-4 | new rating: 1227 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1223 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 333 | Fujita, Kenshiro (1523) | Lost 1-2 | -131210 |
| 2standard | 831 | Murata, Hiroaki (1490) | Lost 0-2 | -131197 |
| 3standard | 995 | Chang, Hui-Liang (1471) | Draw 1-1 | +51202 |
| 4standard | 1038 | Arakaki, Gen (1388) | Lost 0-2 | -151187 |
| 5standard | 1005 | Takase, Yusuke (1462) | Lost 1-2 | -131174 |
| 6standard | 925 | Yabe, Tomoyoshi (1427) | Lost 0-2 | -131161 |
| 7standard | 822 | Gokan, Yuta (1369) | Won 2-1 | +211182 |
| top | average opponent: 1447record: 1-5-1 | new rating: 1182 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1237 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 623 | Yoshida, Kazushi (1768) | Won 2-1 | +271264 |
| 2sealed | 296 | Ishii, Shinji (1464) | Lost 0-2 | -151249 |
| 3sealed | 546 | Nisi, Ryota (1470) | Lost 0-2 | -141235 |
| 4sealed | 854 | Takeuchi, Hiroto (1543) | Lost 0-2 | -121223 |
| top | average opponent: 1562record: 1-3 | new rating: 1223 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1326 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 111 | Kouta, Hayakawa (1500) | Lost 0-2 | -151311 |
| 2modern | 828 | Norimasa, Norimasa (1481) | Lost 0-2 | -151296 |
| 3modern | 1260 | Sakai, Daichi (1446) | Lost 1-2 | -151281 |
| 4modern | 1312 | Akaza, Yasuhiro (1349) | Lost 1-2 | -171264 |
| 6modern | 1165 | Okura, Takuya (1441) | Lost 0-2 | -151249 |
| 7modern | 1097 | Hagishima, Daijiro (1360) | Draw 1-1 | +21251 |
| 8modern | 957 | Miyawaki, Shiro (1393) | Draw 1-1 | +31254 |
| 9modern | 851 | Kato, Kazuyuki (1311) | Lost 0-2 | -171237 |
| top | average opponent: 1410record: 0-6-2 | new rating: 1237 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1339 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 181 | Tanaka, Yuichi (1656) | Lost 1-2 | -121327 |
| 2standard | 771 | Kawai, Kentaro (1482) | Won 2-1 | +201347 |
| 3standard | 722 | Honda, Akihiro (1491) | Won 2-0 | +211368 |
| 4standard | 810 | Usui, Syou (1738) | Lost 0-2 | -121356 |
| 5standard | 853 | Sakai, Shigeto (1434) | Lost 1-2 | -161340 |
| 6standard | 953 | Matsuda, Atsushi (1558) | Lost 0-2 | -141326 |
| top | average opponent: 1560record: 2-4 | new rating: 1326 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1380 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 49 | Katou, Yuuta (1483) | Lost 0-2 | -171363 |
| 2standard | 1096 | Helmer, Richard (1670) | Lost 1-2 | -121351 |
| 3standard | 1526 | Akihito, Terahara (1464) | Won 2-1 | +201371 |
| 4standard | 1216 | Takaishi, Shogo (1483) | Lost 0-2 | -161355 |
| 5standard | 1510 | Kojima, Seigo (1465) | Lost 0-2 | -161339 |
| top | average opponent: 1513record: 1-4 | new rating: 1339 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1337 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 630 | Brazil, Isaac (1449) | Lost 0-2 | -161321 |
| 2sealed | 921 | Cho, Yoon Shin (1507) | Won 2-1 | +211342 |
| 3sealed | 649 | Abe, Syunsuke (1499) | Lost 1-2 | -151327 |
| 4sealed | 978 | Kojima, Shinitirou (1483) | Lost 0-2 | -151312 |
| 5sealed | 1050 | Yoneyama, Syougo (1462) | Won 2-1 | +201332 |
| 6sealed | 1013 | Takuya, Andou (1487) | Won 2-1 | +211353 |
| 7sealed | 858 | Eklund, Niko (1503) | Won 2-0 | +211374 |
| 8sealed | 555 | Matsuda, Masashi (1514) | Lost 0-2 | -161358 |
| 9sealed | 572 | Kiyohara, Daichi (1530) | Won 2-1 | +221380 |
| top | average opponent: 1493record: 5-4 | new rating: 1380 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1396 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1148 | Ishizaka, Akira (1452) | Won 2-0 | +191415 |
| 2sealed | 1170 | Ohno, Yuki (1595) | Lost 0-2 | -151400 |
| 3sealed | 1131 | Taniwaki, Kazuhito (1500) | Draw 1-1 | +21402 |
| 4sealed | 1154 | Shouzu, Yumiko (1501) | Draw 1-1 | +21404 |
| 5sealed | 1195 | Katou, Yuki (1514) | Lost 1-2 | -161388 |
| 6sealed | 1152 | Goto, Masato (1434) | Lost 0-2 | -171371 |
| 7sealed | 1092 | Hata, Tomonori0099 (1445) | Draw 1-1 | +11372 |
| 8sealed | 1019 | Yamamoto, Takashi (1352) | Lost 0-2 | -181354 |
| 9sealed | 970 | Kawano, Takahiro (1401) | Lost 0-2 | -171337 |
| top | average opponent: 1466record: 1-5-3 | new rating: 1337 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 520 | Hiramatsu, Mamoru (1737) | Lost 0-2 | -141486 |
| 2standard | 835 | Sasai, Minehiro (1482) | Lost 0-2 | -181468 |
| 3standard | 920 | Aihara, Shogaku (1581) | Lost 0-2 | -161452 |
| 4standard | 918 | Yonesu, Yuuki (1412) | Lost 0-2 | -191433 |
| 5standard | 891 | Colobong, John (1390) | Lost 0-2 | -181415 |
| 7standard | 795 | Hipperson, Aaron (1426) | Lost 0-2 | -181397 |
| 8standard | 756 | Mori, Fumitaka (1428) | Won 2-0 | +181415 |
| 9standard | 827 | Kaido, Yoshiaki (1342) | Lost 0-2 | -191396 |
| top | average opponent: 1475record: 1-7 | new rating: 1396 | ||