Kubuta, Hiroshi
Current rating: 1519
Record: 20-22-1
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 68 | Kuze, Shouta (1790) | Lost 1-2 | -131491 |
| 4sealed | 352 | Muto, Shogo (1512) | Draw 1-1 | 01491 |
| 5sealed | 584 | Shigehara, Toshinori (1865) | Won 2-1 | +251516 |
| 6sealed | 367 | Tomizawa, Shin (1535) | Won 2-0 | +181534 |
| 7sealed | 215 | Morishita, Yoshihisa (1543) | Won 2-1 | +181552 |
| 8sealed | 125 | Urasawa, Taiji (1674) | Lost 0-2 | -161536 |
| 9sealed | 271 | Imura, Satoshi (1557) | Lost 0-2 | -171519 |
| top | average opponent: 1639record: 3-3-1 | new rating: 1519 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 157 | Tanimoto, Tatsuro (1303) | Won 2-1 | +151488 |
| 4standard | 268 | Yamagami, Yudai (1885) | Lost 1-2 | -111477 |
| 5standard | 220 | Wen, Yuning (1578) | Won 2-0 | +201497 |
| 6standard | 258 | Sakamoto, Taiga (1529) | Won 2-0 | +181515 |
| 7standard | 155 | Tanji, Kensuke (1617) | Lost 1-2 | -161499 |
| 8standard | 294 | Arita, Ryuichi (1761) | Won 2-1 | +231522 |
| 9standard | 155 | Hayashi, Daisuke (1524) | Lost 0-2 | -181504 |
| top | average opponent: 1600record: 4-3 | new rating: 1504 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 87 | Yamane, Yoshiyuki (1505) | Won 2-1 | +181525 |
| 4sealed | 68 | Ogawa, Ryota (1602) | Lost 1-2 | -171508 |
| 5sealed | 206 | Kubota, Muneaki (1559) | Lost 0-2 | -171491 |
| 6sealed | 202 | Miyamoto, Yutaro (1488) | Lost 1-2 | -181473 |
| top | average opponent: 1539record: 1-3 | new rating: 1473 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 606 | Tsutiya, Yukihiro (1518) | Lost 0-2 | -171457 |
| 3sealed | 980 | Murakami, Souta (1501) | Won 2-1 | +191476 |
| 4sealed | 776 | Kojima, Shinitirou (1522) | Won 2-1 | +191495 |
| 5sealed | 751 | Nomura, Hidehiro (1586) | Won 2-0 | +191514 |
| 6sealed | 710 | Matsuo, Keisuke (1523) | Won 2-0 | +181532 |
| 7sealed | 624 | Nishimura, Masaaki (1527) | Won 2-0 | +181550 |
| 8sealed | 616 | Yoshizawa, Kohei (1584) | Won 2-0 | +191569 |
| 9sealed | 608 | Matsushita, Takayuki (1569) | Lost 1-2 | -181551 |
| 11draft | 64 | Kodama, Ren (1577) | Lost 0-2 | -181533 |
| 12draft | 88 | Kawaguchi, Kyouhei (1793) | Lost 0-2 | -131520 |
| 13draft | 31 | Ohno, Isao (1643) | Lost 1-2 | -161504 |
| 14draft | 71 | Hanaoka, Shinichiro (1548) | Won 2-0 | +191523 |
| 15draft | 91 | Sugimoto, Yuuki (1609) | Lost 1-2 | -161507 |
| top | average opponent: 1577record: 7-6 | new rating: 1507 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 71 | Nakamoto, Ryuuta (1660) | Lost 0-2 | -151449 |
| 3sealed | 265 | Baba, Tadashi (1654) | Won 2-1 | +221471 |
| 4sealed | 223 | Ichikawa, Takayoshi (1606) | Won 2-1 | +201491 |
| 5sealed | 127 | T, Shin (1537) | Lost 1-2 | -171474 |
| top | average opponent: 1614record: 2-2 | new rating: 1474 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 672 | Yamada, Yoshitaka (1532) | Won 2-0 | +191519 |
| 3standard | 639 | Inui, Jun (1538) | Lost 0-2 | -181501 |
| 4standard | 759 | Fujiki, Takuya (1426) | Lost 1-2 | -191482 |
| 5standard | 767 | Oohashi, Keisuke (1531) | Lost 1-2 | -181464 |
| 6standard | 817 | Matsumura, Takehiko (1395) | Lost 1-2 | -191445 |
| 7standard | 765 | Kudou, Toshio (1553) | Lost 0-2 | -161429 |
| 8standard | 747 | Kishibata, Kazuya (1440) | Won 2-1 | +181447 |
| 9standard | 816 | Hirose, Daichi (1349) | Won 2-1 | +171464 |
| top | average opponent: 1471record: 3-5 | new rating: 1464 | ||