Osanai, Takashi
Current rating: 1480
Record: 41-46-3
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 582 | Anzai, Ryotaro (1516) | Lost 1-2 | -181495 |
| 3standard | 971 | Otsu, Takeshi (1465) | Won 2-0 | +171512 |
| 4standard | 561 | Yokoyama, Shohei (1527) | Lost 1-2 | -181494 |
| 5standard | 892 | Machida, Takahiro (1724) | Lost 0-2 | -141480 |
| top | average opponent: 1558record: 1-3 | new rating: 1480 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 77 | Ueno, Satoshi (1500) | Won 2-1 | +171550 |
| 2standard | 280 | Takata, Kouhei (1630) | Lost 0-2 | -161534 |
| 3standard | 1203 | Yoshii, Shunsuke (1456) | Won 2-1 | +161550 |
| 4standard | 733 | Oota, Nobuyuki (1482) | Lost 0-2 | -191531 |
| 5standard | 821 | Yusuke, Tokunaga (1500) | Won 2-0 | +171548 |
| 6standard | 845 | Yamazaki, Yuuki (1794) | Lost 0-2 | -131535 |
| 7standard | 778 | Isogai, Yusuke (1503) | Won 2-0 | +171552 |
| 8standard | 875 | Chandrindra, Phath (1455) | Lost 1-2 | -191533 |
| 9standard | 732 | Maeda, Gaku (1423) | Lost 1-2 | -201513 |
| top | average opponent: 1527record: 4-5 | new rating: 1513 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 86 | Matsuda, Atsushi (1510) | Draw 1-1 | 01508 |
| 2sealed | 619 | Saito, Naruto (1475) | Won 2-0 | +181526 |
| 3sealed | 607 | Kawamura, Akihiro (1589) | Draw 1-1 | +11527 |
| 4sealed | 823 | Ikeda, Kengo (1514) | Won 2-0 | +171544 |
| 5sealed | 550 | Asahara, Akira (1838) | Lost 0-2 | -121532 |
| 6sealed | 760 | Suzuki, Takumi (1485) | Won 2-1 | +171549 |
| 7sealed | 549 | Sakatani, Tsuyoshi (1488) | Won 2-1 | +171566 |
| 8sealed | 694 | Matsumoto, Mitsunori (1519) | Won 2-0 | +171583 |
| 9sealed | 530 | Higashida, Tetsuaki (1531) | Draw 0-0 | -11582 |
| 11draft | 327 | Keller, Thomas (1660) | Lost 1-2 | -171565 |
| 12draft | 364 | Yokota, Masaaki (1523) | Lost 1-2 | -181547 |
| 13draft | 144 | Hattori, Taiki (1787) | Lost 0-2 | -141533 |
| top | average opponent: 1577record: 5-4-3 | new rating: 1533 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 792 | Komizo, Kouichi (1394) | Won 2-1 | +161501 |
| 2standard | 387 | Kojima, Daiki (1510) | Lost 1-2 | -181483 |
| 3standard | 984 | Takano, Hirokazu (1451) | Won 2-1 | +181501 |
| 4standard | 361 | Kawaramoto, Yuya (1514) | Won 2-1 | +181519 |
| 5standard | 507 | Furukawa, Syun (1534) | Lost 0-2 | -181501 |
| 6standard | 404 | Shiota, Fumihiko (1745) | Lost 0-2 | -131488 |
| 7standard | 567 | Kondo, Fumiya (1494) | Won 2-1 | +181506 |
| 8standard | 491 | Yokoyama, Takaya (1583) | Won 2-1 | +191525 |
| 9standard | 330 | Yoshida, Akihiko (1570) | Lost 1-2 | -171508 |
| top | average opponent: 1533record: 5-4 | new rating: 1508 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 404 | Matsui, Tetsuharu (1460) | Lost 1-2 | -181488 |
| 2sealed | 384 | Kimura, Yuu1332 (1481) | Won 2-1 | +171505 |
| 3sealed | 424 | Saito, Naruto (1499) | Won 2-0 | +181523 |
| 4sealed | 348 | Kawasaki, Masatsugu (1432) | Lost 0-2 | -191504 |
| 5sealed | 377 | Ikeda, Ippei (1465) | Lost 1-2 | -191485 |
| top | average opponent: 1467record: 2-3 | new rating: 1485 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 306 | Seno, Takuto (1439) | Lost 0-2 | -191466 |
| 2legacy | 330 | Goto, Yoshimasa (1481) | Won 2-1 | +181484 |
| 3legacy | 237 | Yokoi, Takahiro (1500) | Lost 1-2 | -181466 |
| 4legacy | 362 | Harasawa, Takashi (1504) | Won 2-0 | +191485 |
| 5legacy | 351 | Yamada, Yoshitaka (1508) | Won 2-1 | +181503 |
| 6legacy | 265 | Muranaka, Hiroya (1615) | Won 2-1 | +211524 |
| 7legacy | 132 | Yamanaka, Syunnsuke (1575) | Lost 1-2 | -181506 |
| top | average opponent: 1518record: 4-3 | new rating: 1506 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1413 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 62 | Andou, Shuusuke (1500) | Won 2-0 | +201433 |
| 2standard | 202 | Saito, Yuuki (1520) | Lost 1-2 | -161417 |
| 3standard | 300 | Kagami, Gen (1652) | Won 2-1 | +221439 |
| 4standard | 227 | Katou, Keigo (1518) | Won 2-1 | +191458 |
| 5standard | 188 | Kawashita, Tatsuya (1498) | Lost 0-2 | -171441 |
| 6standard | 207 | Komikado, Hayato (1538) | Won 2-0 | +201461 |
| 7standard | 153 | Furugen, Takeji (1487) | Won 2-0 | +181479 |
| 8standard | 55 | Usui, Haruki (1561) | Won 2-1 | +201499 |
| 9standard | 193 | Endo, Jun'Ichi (1718) | Lost 1-2 | -141485 |
| top | average opponent: 1555record: 6-3 | new rating: 1485 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 308 | Ishimura, Shintaro (1947) | Lost 0-2 | -91446 |
| 2sealed | 434 | Kaneko, Masayuki (1516) | Lost 0-2 | -171429 |
| 3sealed | 481 | Kamizono, Naoki (1571) | Lost 0-2 | -161413 |
| top | average opponent: 1678record: 0-3 | new rating: 1413 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 458 | Saito, Atsushi (1429) | Lost 1-2 | -191450 |
| 2modern | 468 | Ishikawa, Sou (1482) | Won 2-0 | +191469 |
| 3modern | 339 | Ueki, Junichi (1499) | Lost 1-2 | -171452 |
| 4modern | 617 | Katou, Yoshitaka (1480) | Won 2-1 | +181470 |
| 5modern | 472 | Rita, Takayuki (1524) | Won 2-1 | +191489 |
| 6modern | 337 | Itodani, Tetsurou (1574) | Lost 0-2 | -161473 |
| 7modern | 335 | Ichimura, Yuji (1507) | Lost 0-2 | -181455 |
| top | average opponent: 1499record: 3-4 | new rating: 1455 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1398 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 180 | Aoki, Satoshi (1453) | Lost 0-2 | -171381 |
| 2standard | 357 | Sekiguchi, Dan (1482) | Lost 1-2 | -161365 |
| 3standard | 318 | Kurauchi, Ryosuke (1465) | Won 2-1 | +201385 |
| 4standard | 334 | Muramatsu, Yasuhiro (1531) | Won 2-1 | +211406 |
| 5standard | 266 | Kawahata, Shigenobu (1499) | Won 2-1 | +191425 |
| 6standard | 148 | Takahira, Wataru (1444) | Won 2-0 | +191444 |
| 7standard | 163 | Ichikawa, Norikazu (1560) | Won 2-1 | +201464 |
| 8standard | 75 | Bandou, Junichirou (1709) | Won 2-1 | +221486 |
| 9standard | 60 | Oohara, Kazumasa (1542) | Lost 0-2 | -171469 |
| top | average opponent: 1521record: 6-3 | new rating: 1469 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 23 | Haraldsson, Hedinn (1514) | Won 2-1 | +201431 |
| 2extended | 49 | Hiraga, Masahiro (1467) | Lost 0-2 | -171414 |
| 3extended | 164 | Kouge, Kazuhiro (1499) | Won 2-1 | +191433 |
| 4extended | 237 | Okauchi, Yuuta (1408) | Lost 1-2 | -181415 |
| 5extended | 254 | Katamine, Kentarou (1499) | Lost 0-2 | -171398 |
| top | average opponent: 1477record: 2-3 | new rating: 1398 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Oota, Shigeru (1500) | Won 2-0 | +191462 |
| 2sealed | 33 | Hiruma, Yuki (1518) | Lost 0-2 | -171445 |
| 3sealed | 137 | Mori, Daisuke (1531) | Lost 0-2 | -161429 |
| 4sealed | 235 | Sugimoto, Yuta (1443) | Lost 1-2 | -181411 |
| top | average opponent: 1498record: 1-3 | new rating: 1411 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Harada, Yoshio (1334) | Won 0-0 | +151515 |
| 2sealed | 76 | Kobayashi, Takahito (1489) | Lost 1-2 | -181497 |
| 3sealed | 171 | Hamada, Masaki (1526) | Lost 0-2 | -181479 |
| 4sealed | 209 | Taka, Norihisa (1483) | Lost 1-2 | -181461 |
| 5sealed | 229 | Tsuboyama, Shuta (1473) | Won 2-1 | +181479 |
| 6sealed | 73 | Nakamura, Yusuke (1552) | Lost 1-2 | -161463 |
| 7sealed | 127 | Ookawa, Noritsugu (1387) | Lost 1-2 | -201443 |
| top | average opponent: 1463record: 2-5 | new rating: 1443 | ||