Hirano, Kosaku
Current rating: 1490
Record: 29-34
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 418 | Watanabe, Ryohei (1466) | Lost 1-2 | -191506 |
| 2sealed | 772 | Sasaki, Yuuki (1625) | Lost 0-2 | -161490 |
| top | average opponent: 1546record: 0-2 | new rating: 1490 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 581 | Yoshikawa, Takuma (1505) | Lost 1-2 | -191532 |
| 2sealed | 687 | Kaido, Yoshiaki (1335) | Lost 0-2 | -221510 |
| 3sealed | 1057 | Ogura, Shigeru (1364) | Won 2-0 | +161526 |
| 4sealed | 856 | Koyanagi, Takashi (1593) | Won 2-1 | +191545 |
| 5sealed | 874 | Hariu, Daichi (1449) | Lost 1-2 | -201525 |
| top | average opponent: 1449record: 2-3 | new rating: 1525 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 87 | Kondo, Yusuke (1439) | Won 2-0 | +181451 |
| 2sealed | 208 | Yamade, Masato (1542) | Won 2-1 | +201471 |
| 3sealed | 177 | Lu, Shaoan (1417) | Won 2-1 | +171488 |
| 4sealed | 101 | Mikami, Yoshirou (1766) | Lost 0-2 | -141474 |
| 5sealed | 276 | Gotou, Hiroaki (1739) | Won 2-0 | +231497 |
| 6sealed | 150 | Murakami, Kazuya3837 (1724) | Won 2-0 | +221519 |
| 7sealed | 117 | Nishi, Hyuma (1578) | Lost 0-2 | -171502 |
| 8sealed | 345 | Mikami, Akihiro (1556) | Won 2-1 | +191521 |
| 9sealed | 189 | Teo, Yuen Peir (1808) | Won 2-1 | +231544 |
| 10draft | 304 | Terasawa, Yu (1613) | Lost 0-2 | -161528 |
| 11draft | 120 | Watanabe, Yuuta8061 (1540) | Lost 0-2 | -181510 |
| 12draft | 240 | Kawahara, Masanobu (1415) | Lost 0-2 | -201490 |
| 13draft | 73 | Yokoyama, Takaya (1619) | Won 2-0 | +211511 |
| 14draft | 277 | Watanabe, Takayuki (1505) | Won 2-1 | +171528 |
| 15draft | 182 | Yam, Wing Chun (1775) | Won 2-1 | +231551 |
| top | average opponent: 1602record: 10-5 | new rating: 1551 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 578 | Choi, Kiho (1470) | Lost 0-2 | -171433 |
| top | record: 0-1 | new rating: 1433 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 346 | Yoshimoto, Masanobu (1599) | Lost 0-2 | -161450 |
| top | record: 0-1 | new rating: 1450 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 112 | Muramatsu, Yusuke (1542) | Won 2-1 | +181532 |
| 4standard | 13 | Wentao, Qi (1807) | Lost 1-2 | -131519 |
| 5standard | 288 | Omi, Tatsuya (1545) | Won 2-0 | +191538 |
| 6standard | 156 | Handa, Takuya (1511) | Lost 0-2 | -191519 |
| 7standard | 671 | Kawakami, Takehito (1605) | Lost 0-2 | -161503 |
| 8standard | 591 | Kimigahukuro, Gaku (1520) | Lost 0-2 | -181485 |
| 9standard | 752 | Cheng, Kel Veen (1427) | Lost 0-2 | -191466 |
| top | average opponent: 1565record: 2-5 | new rating: 1466 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 84 | Iwakura, Tatsuro (1721) | Lost 0-2 | -141459 |
| 4sealed | 398 | Sugizaki, Shunsuke (1571) | Won 2-1 | +211480 |
| 5sealed | 445 | Nakae, Kazusi (1461) | Won 2-1 | +171497 |
| 6sealed | 155 | Hasegawa, Tsuguto (1500) | Won 2-0 | +181515 |
| 7sealed | 80 | Sun, Bo (1920) | Lost 1-2 | -111504 |
| 8sealed | 351 | Kubo, Hirotaka (1537) | Lost 0-2 | -171487 |
| 9sealed | 458 | Kaizu, Hareta (1778) | Won 2-1 | +231510 |
| 10draft | 199 | Higuchi, Makoto (1674) | Lost 1-2 | -151495 |
| 11draft | 216 | Eguchi, Yukio (1548) | Lost 0-2 | -171478 |
| 12draft | 217 | Ozaki, Naoto (1445) | Lost 0-2 | -191459 |
| 13draft | 208 | Hunamoto, Yuuki (1512) | Won 2-0 | +191478 |
| 14draft | 241 | Seno, Takuto (1489) | Won 2-1 | +181496 |
| 15draft | 191 | Tsuchida, Tatsuaki (1458) | Won 2-0 | +181514 |
| top | average opponent: 1586record: 7-6 | new rating: 1514 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 87 | Yuuhi, Fuchimoto (1500) | Won 2-0 | +181481 |
| 4standard | 226 | Tada, Mitsuhiro (1560) | Lost 1-2 | -161465 |
| 5standard | 351 | Tanabe, Tetsuya (1531) | Lost 0-2 | -171448 |
| 6standard | 581 | Kageyama, Hiroki (1604) | Won 2-1 | +211469 |
| 7standard | 444 | Date, Tsutomu (1629) | Won 2-0 | +211490 |
| 8standard | 338 | Ishiguro, Satoshi6674 (1568) | Lost 0-2 | -171473 |
| top | average opponent: 1565record: 3-3 | new rating: 1473 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 92 | Imai, Ayato (1670) | Lost 1-2 | -151474 |
| 4sealed | 234 | Yoshihara, Tomoki (1748) | Won 2-0 | +231497 |
| 5sealed | 162 | Yoshiyama, Makito (1536) | Lost 0-2 | -171480 |
| 6sealed | 240 | Oohashi, Keisuke (1529) | Lost 0-2 | -171463 |
| top | average opponent: 1621record: 1-3 | new rating: 1463 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 15 | Kubota, Muneaki (1518) | Won 2-0 | +191504 |
| 3sealed | 112 | Nozaki, Yousuke (1536) | Won 2-0 | +181522 |
| 4sealed | 3 | Taniguchi, Hironobu (1473) | Won 2-0 | +181540 |
| 5sealed | 44 | Tang, Yu Hsiang (1551) | Lost 0-2 | -181522 |
| 6sealed | 76 | Itani, Hiroshi (1579) | Lost 1-2 | -171505 |
| 7sealed | 168 | Takami, Yuta (1619) | Lost 1-2 | -161489 |
| top | average opponent: 1546record: 3-3 | new rating: 1489 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 508 | Suzuki, Yasuko (1500) | Won 2-1 | +181518 |
| 2sealed | 569 | Furukawa, Hiroki (1638) | Lost 0-2 | -161502 |
| 3sealed | 778 | Okamoto, Yoshihiko (1560) | Lost 0-2 | -171485 |
| top | average opponent: 1566record: 1-2 | new rating: 1485 | ||