Oshimi, Akira
Current rating: 1508
Record: 22-24-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 494 | Saeki, Tomoya (1410) | Won 2-0 | +171481 |
| 2sealed | 261 | Osaka, Yusuke (1506) | Won 2-0 | +191500 |
| 3sealed | 420 | Yokoyama, Shohei (1741) | Won 2-0 | +221522 |
| 4sealed | 157 | Kozaki, Yosuke (1630) | Lost 0-2 | -161506 |
| 5sealed | 202 | Itou, Ryouma (1506) | Won 2-0 | +181524 |
| 6sealed | 296 | Suzuki, Kento (1486) | Won 2-0 | +171541 |
| 7sealed | 131 | Sakamoto, Akihito (1571) | Lost 1-2 | -171524 |
| 8sealed | 275 | Oota, Yusuke (1629) | Lost 0-2 | -161508 |
| top | average opponent: 1560record: 5-3 | new rating: 1508 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 407 | Kouroku, Hikaru (1515) | Won 2-0 | +191473 |
| 2modern | 102 | Hung, Juo Wen (1663) | Lost 0-2 | -151458 |
| 3modern | 704 | Kaminokado, Sunao (1501) | Won 2-1 | +191477 |
| 4modern | 405 | Sugimoto, Shimpei (1442) | Lost 1-2 | -191458 |
| 5modern | 589 | Kusakano, Toru (1526) | Won 2-0 | +191477 |
| 6modern | 667 | Tsukada, Hiroshi (1473) | Won 2-0 | +181495 |
| 7modern | 393 | Nakamura, Yusuke9902 (1739) | Lost 0-2 | -131482 |
| 8modern | 505 | Li, Zheng (1517) | Lost 0-2 | -181464 |
| top | average opponent: 1547record: 4-4 | new rating: 1464 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Tanaka, Fumihiro (1527) | Won 2-1 | +191470 |
| 2sealed | 529 | Yamagishi, Terutaka (1520) | Lost 1-2 | -171453 |
| 3sealed | 924 | Iwamoto, Yuuki (1449) | Lost 0-2 | -181435 |
| 4sealed | 874 | Nakamura, Kota (1386) | Won 2-0 | +171452 |
| 5sealed | 630 | Ichihara, Daisuke (1500) | Won 2-1 | +191471 |
| 6sealed | 487 | Imazawa, Shun (1486) | Lost 0-2 | -171454 |
| top | average opponent: 1478record: 3-3 | new rating: 1454 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 301 | Aoki, Toshihito (1440) | Won 2-1 | +171502 |
| 3sealed | 251 | Shimizu, Haruki (1549) | Lost 0-2 | -171485 |
| 4sealed | 335 | Yamaguchi, Kiyoshi (1518) | Lost 1-2 | -171468 |
| 5sealed | 278 | Ishiwada, Hiroyuki (1605) | Won 2-0 | +201488 |
| 6sealed | 307 | Sakata, Akinori (1282) | Won 2-1 | +141502 |
| 7sealed | 131 | Konno, Masashi (1698) | Lost 0-2 | -141488 |
| 8sealed | 176 | Honda, Takeshi (1500) | Lost 0-2 | -181470 |
| 9sealed | 162 | Madin, Azrin (1409) | Lost 0-2 | -191451 |
| top | average opponent: 1500record: 3-5 | new rating: 1451 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1394 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1034 | Saitou, Yasutaka (1500) | Won 2-1 | +201414 |
| 2sealed | 869 | Koyanagi, Takashi (1602) | Won 2-0 | +221436 |
| 3sealed | 805 | Shiozu, Ryouma (1686) | Lost 0-2 | -141422 |
| 4sealed | 959 | Hayashi, Masataka (1474) | Won 2-0 | +191441 |
| 5sealed | 740 | Fujitsuka, Shougo (1574) | Draw 1-1 | +31444 |
| 6sealed | 798 | Arai, Yuuki (1542) | Won 2-1 | +191463 |
| 7sealed | 741 | Terauchi, Tatsuya (1651) | Won 2-1 | +221485 |
| 8sealed | 879 | Goto, Takashi (1523) | Lost 0-2 | -181467 |
| 9sealed | 929 | Yamaguchi, Kyohei (1445) | Won 2-1 | +181485 |
| top | average opponent: 1555record: 6-2-1 | new rating: 1485 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Ishiyama, Hiroki (1510) | Lost 0-2 | -181482 |
| 2sealed | 234 | Yokomizo, Gouki (1483) | Won 2-1 | +181500 |
| 3sealed | 200 | Mouri, Takemasa (1670) | Lost 0-2 | -151485 |
| 4sealed | 239 | Umeda, Kota (1481) | Lost 0-2 | -181467 |
| 5sealed | 226 | Matushita, Masakazu(KG) (1451) | Lost 0-2 | -181449 |
| 6sealed | 198 | Choi, Jung Won (1430) | Lost 0-2 | -181431 |
| 7sealed | 165 | Tanabe, Yasuyuki (1433) | Lost 0-2 | -181413 |
| 8sealed | 63 | Oshima, Kazuaki (1407) | Lost 0-2 | -191394 |
| top | average opponent: 1483record: 1-7 | new rating: 1394 | ||