Kato, Jun
Current rating: 1596
Record: 60-53-1
Grand Prix Kitakyushu 2013Grand Prix Kyoto 2015Grand Prix Nagoya 2016Grand Prix Tokyo 2016Grand Prix Shizuoka 2017Grand Prix Kobe 2017Grand Prix Chiba 2018Grand Prix Shizuoka 2018 (legacy)Grand Prix Shizuoka 2018 (standard)Grand Prix Kyoto 2019Grand Prix Yokohama 2019Grand Prix Chiba 2019Grand Prix Nagoya 2020
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 69 | Ishigami, Nobuhide (1567) | Won 2-1 | +181603 |
| 3pioneer | 286 | Shibata, Akira (1610) | Lost 0-2 | -181585 |
| 4pioneer | 481 | Tsuzaki, Akira (1566) | Won 2-1 | +181603 |
| 5pioneer | 299 | Miyazaki, Takato (1503) | Lost 0-2 | -201583 |
| 6pioneer | 501 | Hakozaki, Yuta (1438) | Lost 1-2 | -211562 |
| 7pioneer | 411 | Hong, Jungmo (1503) | Won 2-1 | +171579 |
| 8pioneer | 289 | Shibata, Ryouto (1505) | Won 2-1 | +171596 |
| top | average opponent: 1528record: 4-3 | new rating: 1596 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 446 | Tanaka, Takahiro (1414) | Won 2-0 | +151583 |
| 3sealed | 373 | Tamada, Ryoichi (1766) | Won 2-0 | +221605 |
| 4sealed | 3 | Higuchi, Akashi (1712) | Lost 0-2 | -161589 |
| 5sealed | 153 | Toyohara, Eisuke (1277) | Won 2-1 | +121601 |
| 6sealed | 168 | Liu, Xuan (1675) | Won 2-1 | +191620 |
| 7sealed | 53 | Hamaguchi, Shoji (1597) | Lost 1-2 | -181602 |
| 8sealed | 310 | Ohshiro, Syusaku (1664) | Lost 0-2 | -171585 |
| top | average opponent: 1586record: 4-3 | new rating: 1585 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 373 | Kajiwara, Yuta (1446) | Won 2-1 | +151627 |
| 2modern | 266 | Matsuyama, Ryousuke (1731) | Won 2-1 | +201647 |
| 3modern | 409 | Wakita, Daiki (1465) | Lost 1-2 | -211626 |
| 4modern | 777 | Maki, Hidekazu (1673) | Lost 1-2 | -181608 |
| 5modern | 635 | Suzuki, Gou (1495) | Lost 0-2 | -201588 |
| 6modern | 909 | Satou, Takahisa (1508) | Won 2-0 | +171605 |
| 7modern | 565 | Okada, Riku (1503) | Lost 1-2 | -201585 |
| 8modern | 585 | Horikoshi, Takayuki (1641) | Lost 0-2 | -171568 |
| top | average opponent: 1558record: 3-5 | new rating: 1568 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1626 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 392 | Maruyama, Takayoshi (1500) | Lost 1-2 | -211605 |
| 2standard | 616 | Naba, Yutaro (1482) | Won 2-0 | +161621 |
| 3standard | 655 | Kitagawa, Hiroaki (1478) | Lost 1-2 | -211600 |
| 4standard | 779 | Hiroto, Tanaka (1481) | Won 2-0 | +161616 |
| 5standard | 609 | Ishida, Yuhi (1490) | Lost 0-2 | -201596 |
| 6standard | 724 | Kobari, Ryo (1488) | Won 2-1 | +161612 |
| 7standard | 486 | Nakao, Munenari (1641) | Won 2-0 | +191631 |
| 8standard | 434 | Miyagishi, Kohei (1597) | Lost 1-2 | -191612 |
| top | average opponent: 1520record: 4-4 | new rating: 1612 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 496 | Nitta, Yuki (1614) | Won 2-1 | +181633 |
| 2standard | 544 | Lair, Frederic (1539) | Lost 1-2 | -201613 |
| 3standard | 681 | Kamitani, Ryuhei (1501) | Won 2-0 | +161629 |
| 4standard | 431 | Yamasaki, Takumi (1624) | Won 2-0 | +181647 |
| 5standard | 368 | Maki, Kazunori (1678) | Won 2-1 | +191666 |
| 6standard | 429 | Mitsunaga, Yuki (1545) | Lost 1-2 | -201646 |
| 7standard | 572 | Kobayashi, Kazutaka (1671) | Lost 1-2 | -181628 |
| 8standard | 519 | Shiba, Yoshimasa (1485) | Draw 1-1 | -21626 |
| top | average opponent: 1582record: 4-3-1 | new rating: 1626 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1636 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 66 | Kevin, Sutiono (1500) | Lost 0-2 | -211615 |
| top | record: 0-1 | new rating: 1615 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 709 | Gao, Bo (1418) | Won 2-0 | +171518 |
| 2sealed | 260 | Kusakabe, Yu (1520) | Won 2-1 | +181536 |
| 3sealed | 78 | Okada, Koji (1443) | Won 2-0 | +161552 |
| 4sealed | 163 | Hori, Masayuki (1532) | Won 2-0 | +181570 |
| 5sealed | 11 | Kasahara, Koichi (1516) | Lost 0-2 | -191551 |
| 6sealed | 313 | Oyaizu, Keigo (1461) | Won 2-0 | +161567 |
| 7sealed | 163 | Kato, Kensuke (1843) | Won 2-1 | +231590 |
| 8sealed | 19 | Moriya, Erika (1633) | Lost 1-2 | -171573 |
| 9sealed | 206 | Iwasaki, Masayuki (1649) | Won 2-1 | +191592 |
| 10draft | 626 | Maki, Ryosuke (1588) | Won 2-1 | +181610 |
| 11draft | 567 | Kondo, Kazuya (1645) | Won 2-0 | +191629 |
| 12draft | 724 | Wu, Xuan (1824) | Lost 1-2 | -151614 |
| 13draft | 696 | Ushikubo, Kenichi (1659) | Won 2-0 | +191633 |
| 14draft | 639 | Kusunoki, Yuki (1757) | Won 2-0 | +201653 |
| 15draft | 597 | Yamaguchi, Shota (1669) | Lost 1-2 | -171636 |
| top | average opponent: 1610record: 11-4 | new rating: 1636 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 625 | Nagao, Taku (1500) | Won 2-1 | +181541 |
| 2modern | 619 | Iwatsu, Hirotaka (1629) | Lost 1-2 | -171524 |
| 3modern | 722 | Takadera, Toshihisa (1435) | Lost 0-2 | -191505 |
| 4modern | 1182 | Shimada, Kazuaki (1462) | Won 2-0 | +171522 |
| 5modern | 698 | Kurano, Motoki (1509) | Won 2-1 | +181540 |
| 6modern | 734 | Nitta, Yusuke (1528) | Lost 0-2 | -191521 |
| 7modern | 905 | Suzuki, Kouichirou (1406) | Lost 0-2 | -201501 |
| top | average opponent: 1495record: 3-4 | new rating: 1501 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 144 | Kawabata, Sho (1446) | Won 2-0 | +171553 |
| 2standard | 255 | Saito, Yohei (1522) | Won 2-1 | +171570 |
| 3standard | 354 | Matsumura, Shinya (1500) | Won 2-1 | +171587 |
| 4standard | 124 | Zhao, Tianyu (1651) | Lost 1-2 | -171570 |
| 5standard | 245 | Ikai, Koichiro (1561) | Won 2-1 | +181588 |
| 6standard | 216 | Leung, Sai Ho (1576) | Lost 1-2 | -181570 |
| 7standard | 509 | Nakatani, Shinji (1734) | Lost 1-2 | -151555 |
| 8standard | 448 | Yoshihara, Shinji (1444) | Won 2-0 | +161571 |
| 9standard | 372 | Koike, Tomoyuki (1487) | Won 2-0 | +161587 |
| 10standard | 330 | Shigehara, Toshinori (1867) | Lost 1-2 | -131574 |
| 11standard | 339 | Harada, Dampei (1747) | Lost 1-2 | -151559 |
| 12standard | 359 | Ishii, Takuya (1638) | Lost 1-2 | -161543 |
| 13standard | 338 | Hikokubo, Shota (1503) | Lost 1-2 | -191524 |
| 14standard | 313 | Ishii, Masashi (1389) | Won 2-1 | +161540 |
| 15standard | 286 | Robb, Justin (1619) | Lost 1-2 | -171523 |
| top | average opponent: 1579record: 7-8 | new rating: 1523 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 346 | Tanigaki, Toshiyuki (1476) | Won 2-0 | +171532 |
| 2standard | 444 | Oikawa, Masafumi (1452) | Won 2-1 | +161548 |
| 3standard | 207 | Imai, Masakatsu (1533) | Lost 0-2 | -181530 |
| 4standard | 724 | Fujimoto, Daiki (1523) | Won 2-0 | +181548 |
| 5standard | 683 | Matumura, Hirohumi (1540) | Won 2-1 | +181566 |
| 6standard | 420 | Hachiya, Kota (1485) | Won 2-0 | +161582 |
| 7standard | 194 | Kuroda, Yoshirou (1511) | Lost 0-2 | -191563 |
| 8standard | 388 | Kobayashi, Jotaro (1698) | Won 2-1 | +211584 |
| 9standard | 289 | Chiba, Akio (2010) | Lost 0-2 | -111573 |
| 10standard | 298 | Shimamura, Yukihiro (1558) | Lost 0-2 | -181555 |
| 11standard | 372 | Sunaga, Masahiro (1545) | Lost 0-2 | -191536 |
| top | average opponent: 1576record: 6-5 | new rating: 1536 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 464 | Parpura, Igor (1500) | Won 2-0 | +181520 |
| 2sealed | 442 | Sako, Wataru (1519) | Won 2-1 | +181538 |
| 3sealed | 140 | Kondou, Keiichi (1556) | Won 2-1 | +181556 |
| 4sealed | 116 | Urano, Syouhei (1498) | Lost 1-2 | -191537 |
| 5sealed | 158 | Sashida, Tomoro (1400) | Lost 1-2 | -201517 |
| 6sealed | 542 | Yaoita, Akihiro (1576) | Lost 1-2 | -171500 |
| 7sealed | 701 | Arai, Ryotaro (1502) | Won 2-0 | +181518 |
| 8sealed | 628 | Yamanouchi, Yuki (1530) | Won 2-0 | +181536 |
| 9sealed | 457 | Hinohara, Toyokazu (1333) | Lost 0-2 | -211515 |
| top | average opponent: 1491record: 5-4 | new rating: 1515 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 64 | Kimura, Takuya 2 (1500) | Won 2-1 | +181500 |
| 2legacy | 121 | Yoshida, Kazushi (1518) | Won 2-0 | +191519 |
| 3legacy | 21 | Nishimura, Noboru (1476) | Won 2-0 | +171536 |
| 4legacy | 47 | Katagiri, Kazushi (1577) | Won 2-0 | +191555 |
| 5legacy | 28 | Yanaseko, Kentarou (1636) | Lost 0-2 | -171538 |
| 6legacy | 36 | Takano, Shigeki (1524) | Lost 1-2 | -181520 |
| 7legacy | 130 | Imai, Yoshihisa (1491) | Lost 0-2 | -191501 |
| 8legacy | 155 | Takaizumi, Yosuke (1539) | Won 2-1 | +191520 |
| 9legacy | 134 | Hashimoto, Shouhou (1533) | Lost 1-2 | -181502 |
| top | average opponent: 1533record: 5-4 | new rating: 1502 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | F., Yousuke (1500) | Won 2-0 | +181518 |
| 2standard | 88 | Hamada, Junji (1490) | Won 2-0 | +171535 |
| 3standard | 148 | Anan, Kazuyoshi (1529) | Won 2-0 | +181553 |
| 4standard | 57 | Kawaguchi, Tetsu (1558) | Won 2-0 | +181571 |
| 5standard | 61 | Kumagai, Riku (1734) | Lost 0-2 | -151556 |
| 6standard | 105 | Wada, Kazumasa (1558) | Lost 0-2 | -181538 |
| 7standard | 257 | Kikuchi, Osamu (1513) | Lost 0-2 | -181520 |
| 8standard | 278 | Oogushi, Hiroki (1419) | Lost 0-2 | -201500 |
| 9standard | 254 | Okubo, Mai (1488) | Lost 0-2 | -181482 |
| top | average opponent: 1532record: 4-5 | new rating: 1482 | ||