Jo, Bunkun
Current rating: 1606
Record: 53-48-2
| Grand Prix Yokohama 2019 (modern) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 234 | Ishino, Katsunori (1541) | Won 2-0 | +171607 |
| 2modern | 468 | Tooi, Yuuta (1549) | Won 2-0 | +171624 |
| 3modern | 374 | Ozawa, Takeshi (2079) | Lost 1-2 | -111613 |
| 4modern | 474 | Iwasaki, Koichi (1600) | Won 2-0 | +181631 |
| 5modern | 402 | Isobe, Jyunichi (1497) | Lost 0-2 | -201611 |
| 6modern | 591 | Furusawa, Yoshihiro (1520) | Won 2-1 | +161627 |
| 7modern | 504 | Nakatani, Hiroki (1435) | Lost 1-2 | -211606 |
| top | average opponent: 1603record: 4-3 | new rating: 1606 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 656 | Jelecevic, Jan (1729) | Lost 0-2 | -151579 |
| 2sealed | 714 | Ochiai, Ryo (1496) | Won 2-0 | +161595 |
| 3sealed | 712 | Oota, Hirotaka (1580) | Draw 1-1 | 01595 |
| 4sealed | 793 | Winter, Florian [AUT] (1562) | Lost 1-2 | -191576 |
| 5sealed | 921 | Adachi, Junya (1412) | Won 2-1 | +151591 |
| 6sealed | 745 | Matsuda, Yuki0417 (1501) | Lost 1-2 | -191572 |
| 7sealed | 823 | Honma, Rie (1495) | Won 2-1 | +161588 |
| 8sealed | 668 | Setsompop, Mingrerk (1690) | Won 2-0 | +201608 |
| 9sealed | 520 | Hasegawa, Shouichi (1577) | Lost 0-2 | -181590 |
| top | average opponent: 1560record: 4-4-1 | new rating: 1590 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 191 | Lee, Sean (1525) | Won 2-1 | +171598 |
| 4sealed | 3 | Kozakai, Yukio (1852) | Lost 0-2 | -131585 |
| 5sealed | 85 | Mitsuhashi, Shou (1489) | Lost 0-2 | -201565 |
| 6sealed | 208 | Sha, Han-Chieh (1442) | Won 2-0 | +161581 |
| 7sealed | 206 | Hisano, Mikita (1519) | Won 2-1 | +171598 |
| 8sealed | 64 | Kobayashi, Kazutaka (1555) | Won 2-1 | +171615 |
| 9sealed | 54 | Ootani, Masashi (1479) | Lost 1-2 | -211594 |
| top | average opponent: 1552record: 4-3 | new rating: 1594 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 11 | Nakamura, Sara (1494) | Won 2-1 | +161611 |
| 4sealed | 94 | Arai, Kenichiro (1698) | Lost 0-2 | -161595 |
| 5sealed | 120 | Tokifuji, Ryo (1537) | Won 2-1 | +171612 |
| 6sealed | 122 | Inagawa, Katsuya (1524) | Lost 1-2 | -201592 |
| 7sealed | 126 | Abe, Motoki (1770) | Lost 1-2 | -141578 |
| 8sealed | 202 | Takahira, Takashi (1571) | Won 2-1 | +171595 |
| 9sealed | 111 | Hagiwara, Noriyuki (1800) | Lost 0-2 | -141581 |
| top | average opponent: 1628record: 3-4 | new rating: 1581 | ||
| Grand Prix Shanghai 2014 (KTK limited) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 160 | Li, Wujian (1536) | Won 2-1 | +171600 |
| 4sealed | 82 | Lou, Mengyang (1552) | Won 2-1 | +171617 |
| 5sealed | 59 | Pai, Bruce (1681) | Lost 0-2 | -171600 |
| 6sealed | 62 | Liu, Ren (1503) | Won 2-0 | +161616 |
| 7sealed | 23 | Zhou, Zhengyang (1512) | Lost 0-2 | -201596 |
| 8sealed | 71 | Ding, Shixuan (1555) | Lost 1-2 | -181578 |
| 9sealed | 158 | Zheng, Dongdong (1562) | Won 2-1 | +171595 |
| top | average opponent: 1557record: 4-3 | new rating: 1595 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 577 | Akada, Yasunori (1536) | Won 2-0 | +171617 |
| 4standard | 577 | Satou, Yoshikazu (1368) | Won 2-0 | +131630 |
| 5standard | 525 | Tanahashi, Masayasu (1730) | Lost 0-2 | -161614 |
| 6standard | 530 | Huang, Hao-Shan (1914) | Lost 1-2 | -121602 |
| 7standard | 678 | Machida, Takatoshi (1594) | Won 2-0 | +171619 |
| 8standard | 615 | Fujita, Kazuhide (1551) | Lost 0-2 | -191600 |
| 9standard | 731 | Wang, Chih Ming (1622) | Lost 0-2 | -171583 |
| top | average opponent: 1616record: 3-4 | new rating: 1583 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 49 | Hirose, Daichi (1413) | Won 2-1 | +161536 |
| 3standard | 74 | Fujii, Akira (1451) | Lost 0-2 | -201516 |
| 4standard | 230 | Mizoshiri, Yoshikazu (1517) | Won 2-1 | +181534 |
| 5standard | 219 | Shiraishi, Masaharu (1660) | Won 2-0 | +211555 |
| 6standard | 150 | Nagahiro, Masato (1523) | Won 2-1 | +171572 |
| 7standard | 99 | Nakamura, Atsushi (1771) | Won 2-0 | +221594 |
| 8standard | 19 | Akita, Naoto (1670) | Won 2-1 | +191613 |
| 9standard | 15 | Zhao, Tianyu (1776) | Won 2-0 | +211634 |
| 10standard | 20 | Takahashi, Yuta (1789) | Lost 1-2 | -151619 |
| 11standard | 15 | Che, Ling (1556) | Won 2-1 | +171636 |
| 12standard | 19 | Miyazono, Takeshi (1624) | Won 2-1 | +171653 |
| 13standard | 7 | Tsunemoto, Makoto (1600) | Lost 1-2 | -181635 |
| 14standard | 24 | Kou, Changsu (1769) | Lost 0-2 | -161619 |
| 15standard | 35 | Sakano, Tatsuo (1572) | Lost 1-2 | -191600 |
| top | average opponent: 1621record: 9-5 | new rating: 1600 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 992 | Kuriyama, Kazuya (1520) | Won 2-1 | +181543 |
| 2sealed | 767 | Yamamoto, Satoshi 297 (1500) | Lost 1-2 | -191524 |
| 3sealed | 932 | Hasegawa, Tomohiro (1389) | Lost 0-2 | -201504 |
| 4sealed | 1023 | Irie, Daiki (1449) | Won 2-1 | +171521 |
| 5sealed | 934 | Skinstad, Erik (1531) | Won 2-0 | +181539 |
| 6sealed | 946 | Matsumoto, Shou (1572) | Lost 0-2 | -171522 |
| 7sealed | 887 | Renger, Michael (1445) | Won 2-1 | +161538 |
| 8sealed | 1014 | Kawaguchi, Tetsu (1521) | Lost 0-2 | -181520 |
| top | average opponent: 1491record: 4-4 | new rating: 1520 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 364 | Hirai, Eiichi (1554) | Won 2-1 | +201476 |
| 3standard | 177 | Yoshizawa, Toshio (1287) | Won 2-0 | +141490 |
| 4standard | 63 | Koshimura, Takeshi (1494) | Won 2-1 | +181508 |
| 5standard | 85 | Ishigami, Nobuhide (1575) | Won 2-0 | +191527 |
| 6standard | 30 | Tanaka, Kouichi (1849) | Won 2-0 | +241551 |
| 7standard | 2 | Matsumoto, Yuki2978 (1614) | Lost 0-2 | -171534 |
| 8standard | 56 | Son, Kii (1559) | Won 2-0 | +191553 |
| 9standard | 41 | Koyanagi, Takuya (1549) | Lost 1-2 | -181535 |
| 10standard | 92 | Fujii, Masahiro (1597) | Lost 1-2 | -171518 |
| 11standard | 97 | Shiraishi, Ryou (1630) | Won 2-0 | +201538 |
| 12standard | 69 | Yamada, Hiroki (1465) | Won 2-0 | +171555 |
| 13standard | 44 | Miyauchi, Makoto (1702) | Lost 0-0 | -161539 |
| 14standard | 61 | Maeda, Lucio (1673) | Lost 1-2 | -151524 |
| 15standard | 65 | Inoue, Shota (1572) | Won 2-1 | +181542 |
| 16standard | 57 | Machida, Takatoshi (1576) | Lost 0-2 | -171525 |
| top | average opponent: 1580record: 9-6 | new rating: 1525 | ||
| Grand Prix Shanghai 2012 (M13 limited) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 270 | Liang, Jing (1500) | Lost 0-2 | -171415 |
| 2sealed | 269 | Luo, Jun long (1484) | Won 2-0 | +201435 |
| 3sealed | 162 | Onuma, Hayato (1334) | Won 2-0 | +161451 |
| 4sealed | 176 | Yu, Jisun (1470) | Lost 1-2 | -181433 |
| 5sealed | 211 | Li, Zihan (1500) | Won 2-1 | +191452 |
| 6sealed | 205 | Wan, Nuo (1519) | Won 2-1 | +201472 |
| 7sealed | 83 | Jiang, Shuo (1596) | Lost 1-2 | -161456 |
| top | average opponent: 1486record: 4-3 | new rating: 1456 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 334 | Yonekura, Takumi (1500) | Draw 1-1 | +11447 |
| 2modern | 408 | Sakai, Ryuuichi (1500) | Won 2-0 | +191466 |
| 3modern | 278 | Naito, Yuuki (1457) | Lost 1-2 | -181448 |
| 4modern | 467 | Ikebata, Ryou (1499) | Lost 1-2 | -171431 |
| 5modern | 571 | Tanigawa, Futa (1478) | Lost 0-2 | -171414 |
| 6modern | 550 | goto, masahiro (1429) | Won 2-1 | +181432 |
| top | average opponent: 1477record: 2-3-1 | new rating: 1432 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 177 | Ishii, Yuki (1500) | Won 2-1 | +181518 |
| 2standard | 18 | Ikeda, Yuuichirou (1523) | Lost 0-2 | -181500 |
| 3standard | 132 | Amino, Kaoru (1499) | Lost 1-2 | -181482 |
| 4standard | 397 | Saegusa, Nobuyuki (1483) | Lost 1-2 | -181464 |
| 5standard | 352 | Katou, Akihiro (1502) | Won 2-1 | +191483 |
| 6standard | 311 | Hori, Naomi (1484) | Lost 1-2 | -181465 |
| 7standard | 268 | Konno, Eiji (1462) | Won 2-0 | +181483 |
| 8standard | 215 | Baba, Yoshinao (1451) | Lost 1-2 | -191464 |
| 9standard | 183 | Satou, Ryousuke (1468) | Lost 1-2 | -181446 |
| top | average opponent: 1486record: 3-6 | new rating: 1446 | ||