Kokubu, Yusuke
Current rating: 1655
Record: 56-44-2
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1651 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 343 | Nakanishi, Toma (1563) | Won 2-1 | +161667 |
| 3pioneer | 321 | Katou, Yuuta (1700) | Won 2-0 | +191686 |
| 4pioneer | 157 | Fujikura, Akinori (1673) | Lost 1-2 | -181668 |
| 5pioneer | 215 | Hase, Daigo (1543) | Lost 0-2 | -211647 |
| 6pioneer | 309 | Kato, Jun 9711 (1519) | Won 2-1 | +161663 |
| 7pioneer | 272 | Kanayama, Haruki (1437) | Lost 0-2 | -221641 |
| 8pioneer | 354 | Niitani, Nobuhide (1399) | Won 2-0 | +141655 |
| top | average opponent: 1548record: 4-3 | new rating: 1655 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1680 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 110 | Ishida, Ryuichiro (1736) | Won 2-0 | +191699 |
| 3standard | 372 | Shiba, Yoshimasa (1541) | Draw 1-1 | -31696 |
| 4standard | 230 | Nakanishi, Kota (1330) | Lost 1-2 | -241672 |
| 5standard | 426 | Yamaguchi, Hiroshi1998 (1498) | Lost 1-2 | -211651 |
| top | average opponent: 1526record: 1-2-1 | new rating: 1651 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1670 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 327 | Takahashi, Hajime (1469) | Won 2-0 | +141684 |
| 3sealed | 125 | Morinaka, Fuyuki (1674) | Lost 1-2 | -181666 |
| 4sealed | 670 | Fukumoto, Hiroaki (1677) | Won 2-0 | +181684 |
| 5sealed | 439 | Hirano, Jyun (1487) | Won 2-0 | +151699 |
| 6sealed | 160 | Murata, Atsushi (1670) | Won 2-1 | +171716 |
| 7sealed | 122 | Ichikawa, Shoichi (1644) | Won 2-1 | +171733 |
| 8sealed | 51 | Hasegawa, Tsuyoshi (1556) | Won 2-0 | +151748 |
| 9sealed | 35 | Mitsui, Hideo (1794) | Lost 0-2 | -171731 |
| 10draft | 79 | Uchino, Jun (1664) | Lost 1-2 | -201711 |
| 11draft | 197 | Shimizu, Ryouta (1691) | Won 2-0 | +181729 |
| 12draft | 156 | Kurokawa, Yuuki (1503) | Won 2-1 | +141743 |
| 13draft | 18 | Izumisawa, Ryo (1621) | Lost 0-2 | -201723 |
| 14draft | 169 | Komine, Syunsuke (1514) | Lost 1-2 | -221701 |
| 15draft | 84 | Oda, Yusuke (1545) | Lost 1-2 | -211680 |
| top | average opponent: 1608record: 8-6 | new rating: 1680 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1658 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 467 | Nagase, Iori (1482) | Won 2-0 | +151673 |
| 2standard | 69 | Yanagidate, Ikumi (1515) | Won 2-1 | +151688 |
| 3standard | 50 | Egeyama, Tomoki (1486) | Won 2-0 | +141702 |
| 4standard | 118 | Aka, Shunsuke (1598) | Won 2-0 | +161718 |
| 5standard | 74 | Yoshino, Kohei (1641) | Lost 0-2 | -191699 |
| 6standard | 207 | Miyakura, Yoshiji (1486) | Lost 1-2 | -221677 |
| 7standard | 221 | Mizumoto, Hirotaka (1667) | Won 2-0 | +181695 |
| 8standard | 244 | Ikeda, Kazuya (1523) | Won 2-0 | +151710 |
| 9standard | 188 | Takahasi, Yuta5171 (1675) | Lost 1-2 | -191691 |
| 10standard | 141 | Komatsu, Yuuhei (1513) | Lost 0-2 | -211670 |
| top | average opponent: 1559record: 6-4 | new rating: 1670 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 437 | Inagawa, Katsuya (1508) | Won 2-0 | +171582 |
| 2standard | 311 | Satonaka, Kentarou (1423) | Won 2-1 | +151597 |
| 3standard | 233 | Fujikawa, Daisuke (1477) | Won 2-1 | +161613 |
| 4standard | 357 | Chen, Yiwen (1860) | Won 2-0 | +221635 |
| 5standard | 237 | Ogawa, Shota (1804) | Won 2-0 | +211656 |
| 6standard | 197 | Lee, Joon Soo (1838) | Won 2-1 | +221678 |
| 7standard | 195 | Kojima, Yoshifumi (1559) | Won 2-0 | +151693 |
| 8standard | 194 | Kashiwa, Tomohiro (1617) | Lost 1-2 | -191674 |
| 9standard | 49 | Shimazaki, Ryota (1680) | Lost 1-2 | -181656 |
| 10standard | 67 | Kimura, Shoji (1601) | Won 2-0 | +171673 |
| 11standard | 30 | Mitsunaga, Yuki (1607) | Lost 1-2 | -191654 |
| 12standard | 65 | Kondo, Go (1525) | Lost 0-2 | -201634 |
| 13standard | 117 | Comley, Rainy (1538) | Won 2-0 | +161650 |
| 14standard | 70 | Moriyama, Masahide (1697) | Lost 0-2 | -171633 |
| 15standard | 92 | Ozawa, Takeshi (2046) | Won 2-1 | +251658 |
| top | average opponent: 1652record: 10-5 | new rating: 1658 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 74 | Mizuno, Shiori (1401) | Won 2-1 | +151575 |
| 2sealed | 386 | Endo, Ryota (1795) | Lost 1-2 | -141561 |
| 3sealed | 529 | Tamura, Shunpei (1509) | Won 2-0 | +171578 |
| 4sealed | 426 | Ueno, Hiroshi (1618) | Won 2-0 | +191597 |
| 5sealed | 399 | Takeda, Harunobu (1759) | Lost 0-2 | -151582 |
| 6sealed | 413 | Osaka, Yusuke (1635) | Lost 0-2 | -171565 |
| top | average opponent: 1620record: 3-3 | new rating: 1565 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 214 | Nishibe, Daiki (1518) | Lost 0-2 | -181519 |
| 2sealed | 822 | Konishi, Minato (1482) | Won 2-0 | +171536 |
| 3sealed | 866 | Shimadu, Naofumi (1592) | Won 2-1 | +191555 |
| 4sealed | 640 | Kusunoki, Iori (1514) | Won 2-0 | +171572 |
| 5sealed | 436 | Sun, Chuan (1932) | Lost 0-2 | -111561 |
| 6sealed | 528 | Teo, Justin (1491) | Won 2-0 | +161577 |
| 7sealed | 385 | Ueki, Yoshinori (1621) | Lost 0-2 | -171560 |
| top | average opponent: 1593record: 4-3 | new rating: 1560 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 288 | Mori, Kazumasa (1443) | Won 2-1 | +161556 |
| 2modern | 423 | Osawa, Hiroaki (1504) | Draw 1-1 | -11555 |
| 3modern | 679 | Sonoda, Takayuki (1423) | Lost 0-2 | -201535 |
| 4modern | 935 | Taniguchi, Yuki (1456) | Won 2-0 | +171552 |
| 5modern | 647 | Kirino, Ryohei (1754) | Lost 1-2 | -151537 |
| top | average opponent: 1516record: 2-2-1 | new rating: 1537 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 11 | Moriya, Takeshi (1479) | Won 2-1 | +171551 |
| 2legacy | 145 | Shinohara, Gen 8933 (1500) | Lost 1-2 | -191532 |
| 3legacy | 968 | Kawashima, Takeru (1500) | Lost 0-2 | -191513 |
| 4legacy | 1011 | Kaneko, Yasuki (1511) | Won 2-0 | +181531 |
| 5legacy | 665 | Matsuya, Takahiro (1400) | Won 2-1 | +161547 |
| 6legacy | 697 | Yamaguchi, Tomohiro (1481) | Won 2-0 | +171564 |
| 7legacy | 409 | Tsuruoka, Shouta (1631) | Won 2-0 | +191583 |
| 8legacy | 229 | Yashiki, Kouichi (1380) | Won 2-0 | +141597 |
| 9legacy | 110 | Sakurabayashi, Gaku (1506) | Lost 0-2 | -191578 |
| 10legacy | 332 | Takei, Jun (1534) | Lost 1-2 | -191559 |
| 11legacy | 330 | Liu, Yi Pang (1520) | Lost 1-2 | -191540 |
| top | average opponent: 1495record: 6-5 | new rating: 1540 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 579 | Ogawa, Jouji (1500) | Won 2-0 | +181491 |
| 2standard | 752 | Maeda, Takashi (1238) | Won 2-1 | +141505 |
| 3standard | 678 | Ishino, Katsunori (1557) | Won 2-1 | +181523 |
| 4standard | 108 | Saito, Yuki (1521) | Won 2-1 | +181541 |
| 5standard | 122 | Kaneta, Takaaki (1561) | Won 2-0 | +191560 |
| 6standard | 66 | Itou, Tomoya (1619) | Won 2-1 | +191579 |
| 7standard | 24 | Ishii, Wataru (1556) | Lost 1-2 | -191560 |
| 8standard | 95 | Kuroda, Yoshirou (1530) | Won 2-0 | +181578 |
| 9standard | 57 | Matsumoto, Yuki2978 (2180) | Lost 0-2 | -81570 |
| 10standard | 135 | Enomoto, Kyouichi (1599) | Lost 1-2 | -181552 |
| 11standard | 274 | Yamane, Yuuki (1485) | Lost 0-2 | -191533 |
| 12standard | 343 | Shingo, Tanaka (1593) | Won 2-1 | +191552 |
| 13standard | 199 | Ueda, Tadahiko (1537) | Lost 1-2 | -181534 |
| top | average opponent: 1575record: 8-5 | new rating: 1534 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 15 | Nakamura, Yuki6123 (1536) | Won 2-0 | +201480 |
| 4standard | 254 | Hayata, Akira (1551) | Won 2-0 | +191499 |
| 5standard | 30 | Tajima, Kouichi (1520) | Won 2-0 | +181517 |
| 6standard | 30 | Hirato, Ougi (1761) | Lost 1-2 | -131504 |
| 7standard | 78 | Iwasaki, Shouya (1541) | Lost 0-2 | -181486 |
| 8standard | 227 | Okumura, Yuji (1724) | Lost 0-2 | -131473 |
| top | average opponent: 1606record: 3-3 | new rating: 1473 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 648 | Hayase, Fumihiko (1445) | Lost 0-2 | -191481 |
| 2sealed | 913 | Kato, Shoya (1482) | Won 2-1 | +181499 |
| 3sealed | 990 | Oshima, Shimpei (1458) | Lost 0-2 | -191480 |
| 4sealed | 979 | Kazuki, Rika (1364) | Lost 0-2 | -201460 |
| top | average opponent: 1437record: 1-3 | new rating: 1460 | ||