Ishii, Hiroyuki
Current rating: 1520
Record: 55-51-1
Grand Prix Yokohama 2012Grand Prix Nagoya 2012Grand Prix Yokohama 2013Grand Prix Shizuoka 2013Grand Prix Kobe 2014Grand Prix Shizuoka 2015Grand Prix Tokyo 2016Grand Prix Chiba 2016Grand Prix Shizuoka 2017Grand Prix Kobe 2017Grand Prix Yokohama 2019Grand Prix Nagoya 2020Regional Championships Aichi 2022
| Regional Championships Aichi 2022 (pioneer) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 5 | Hirokawa, Ryouji (1524) | Lost 0-2 | -181512 |
| 2pioneer | 55 | Futamata, Yojiro (1784) | Lost 0-2 | -131499 |
| 3pioneer | 96 | Kita, Takuya (1556) | Won 2-1 | +191518 |
| 4pioneer | 76 | Matsuda, Yuki (1580) | Lost 1-2 | -171501 |
| 5pioneer | 79 | Foo, Zhi Jie (1586) | Won 2-0 | +191520 |
| top | average opponent: 1606record: 2-3 | new rating: 1520 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1592 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 111 | Yoshino, Takahiko (1562) | Won 2-1 | +171609 |
| 3pioneer | 166 | Yamada, Junki (1649) | Lost 1-2 | -171592 |
| 4pioneer | 336 | Matsushita, Takahiro (1590) | Won 2-0 | +181610 |
| 5pioneer | 241 | Kamo, Keisuke (1623) | Lost 0-2 | -181592 |
| 6pioneer | 345 | Higuchi, Yasuhiro (1480) | Lost 1-2 | -201572 |
| 7pioneer | 443 | Fujii, Mikiya (1390) | Lost 1-2 | -211551 |
| 8pioneer | 376 | Sakuma, Takamichi (1391) | Lost 1-2 | -211530 |
| top | average opponent: 1527record: 2-5 | new rating: 1530 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1660 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 72 | Niwa, Ryuuta (1646) | Won 2-0 | +181678 |
| 3modern | 251 | Oikawa, Ryusuke (1633) | Lost 0-2 | -191659 |
| 4modern | 638 | Kurita, Ryo (1517) | Lost 0-2 | -201639 |
| 5modern | 649 | Niu, Yaoqi (1476) | Won 2-1 | +151654 |
| 6modern | 501 | Fujii, Takehiro (1575) | Lost 1-2 | -201634 |
| 7modern | 604 | Shibata, Akira (1562) | Lost 1-2 | -191615 |
| 8modern | 617 | Chiba, Tatsuya (1320) | Lost 0-2 | -231592 |
| top | average opponent: 1533record: 2-5 | new rating: 1592 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1651 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 424 | Maruo, Yuuta (1778) | Won 2-1 | +201671 |
| 4modern | 257 | Katou, Yuuta (1659) | Lost 1-2 | -181653 |
| 5modern | 552 | Kitamura, Gaku (1513) | Won 2-0 | +151668 |
| 6modern | 284 | Karatsu, Yoshifumi (1603) | Won 2-1 | +171685 |
| 7modern | 151 | Kashita, Naoto (1580) | Lost 0-2 | -201665 |
| 8modern | 227 | Ito, Yuta (1554) | Won 2-1 | +161681 |
| 9modern | 204 | Akai, Satoshi (1602) | Won 2-1 | +171698 |
| 10modern | 163 | Michibata, Tatsuya (1603) | Lost 0-2 | -201678 |
| 11modern | 292 | Chu Heng, Eng (1775) | Won 2-1 | +201698 |
| 12modern | 152 | Feng, Chiu Ren (1612) | Lost 0-2 | -201678 |
| 13modern | 196 | Morikawa, Taichi (1686) | Lost 1-2 | -181660 |
| top | average opponent: 1633record: 6-5 | new rating: 1660 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1669 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 286 | Saijo, Yuichi (1659) | Lost 1-2 | -181651 |
| 3standard | 935 | Nakada, Shogo (1516) | Lost 0-2 | -211630 |
| 4standard | 1140 | Gokan, Yuta (1450) | Lost 0-2 | -211609 |
| 5standard | 1200 | Nohara, Hiromitsu (1448) | Won 2-0 | +151624 |
| 6standard | 1064 | Higashira, Naoyuki (1449) | Won 2-0 | +151639 |
| 7standard | 806 | Ogawa, Syouta (1603) | Won 2-1 | +171656 |
| 8standard | 581 | Wada, Yusuke (1503) | Won 2-0 | +151671 |
| 9standard | 410 | Nagami, Takahiro (1529) | Lost 1-2 | -201651 |
| top | average opponent: 1520record: 4-4 | new rating: 1651 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1663 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 37 | Yoshizumi, Kazuma (1518) | Won 2-0 | +161679 |
| 3legacy | 171 | Sasaki, Hideya (1475) | Lost 0-2 | -221657 |
| 4legacy | 434 | Igarashi, Takuto (1517) | Won 2-0 | +161673 |
| 5legacy | 350 | Noguchi, Masayoshi (1573) | Won 2-0 | +161689 |
| 6legacy | 279 | Ogami, Kenneth (1620) | Won 2-1 | +171706 |
| 7legacy | 106 | Yamanaka, Kousuke (1557) | Lost 1-2 | -211685 |
| 8legacy | 143 | Nakamura, Atsushi (1800) | Won 2-1 | +201705 |
| 9legacy | 229 | Oosaka, Yuusuke (1845) | Lost 0-2 | -161689 |
| 10legacy | 174 | Suzuki, Kousei (1540) | Lost 0-2 | -201669 |
| top | average opponent: 1605record: 5-4 | new rating: 1669 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 209 | Iwazaki, Yuuta (1650) | Won 2-0 | +191627 |
| 4standard | 20 | Ikeda, Masahito (1519) | Won 2-1 | +161643 |
| 5standard | 2 | Kodera, Yasunori (1588) | Lost 1-2 | -191624 |
| 6standard | 161 | Satou, Tsubasa (1696) | Won 2-0 | +191643 |
| 7standard | 178 | Hasegawa, Kazunari (1627) | Won 2-0 | +181661 |
| 8standard | 90 | Tsuda, Tomohiro (1678) | Won 2-1 | +181679 |
| 9standard | 78 | Kato, Kensuke (1767) | Lost 0-2 | -161663 |
| 10standard | 137 | Suematsu, Takaaki (1869) | Lost 1-2 | -141649 |
| 11standard | 293 | Imai, Kenta (1695) | Won 2-0 | +191668 |
| 12standard | 193 | Sasaki, Tsutomu (1623) | Lost 1-2 | -191649 |
| 13standard | 249 | Kobayashi, Hiroya (1574) | Won 2-1 | +161665 |
| 14standard | 199 | Fukunaga, Nao (1623) | Won 2-0 | +181683 |
| 15standard | 103 | Kakinoki, Junichi (1615) | Lost 0-2 | -201663 |
| top | average opponent: 1656record: 8-5 | new rating: 1663 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1650 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 165 | Higuchi, Makoto (1634) | Lost 1-2 | -181632 |
| 4sealed | 158 | Imai, Satoshi (1658) | Lost 0-2 | -181614 |
| 5sealed | 338 | Anzai, Yasunobu (1404) | Won 2-1 | +141628 |
| 6sealed | 233 | Shimizu, Yusuke (1513) | Lost 1-2 | -201608 |
| top | average opponent: 1552record: 1-3 | new rating: 1608 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1624 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 147 | Mayor, Damien (1631) | Won 2-1 | +181642 |
| 4modern | 25 | Koga, Seiya (1552) | Lost 1-2 | -191623 |
| 5modern | 192 | Fukushima, Shingo (1535) | Draw 1-1 | -21621 |
| 6modern | 197 | Miyamoto, Akihiro (1545) | Won 2-1 | +171638 |
| 7modern | 138 | Kondou, Keiichi (1536) | Lost 0-2 | -201618 |
| 8modern | 211 | Kawai, Hiroki4425 (1535) | Won 2-1 | +161634 |
| 9modern | 150 | Sugimoto, Takaaki (1517) | Won 2-0 | +161650 |
| top | average opponent: 1550record: 4-2-1 | new rating: 1650 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 147 | Uemoto, Takahiro (1532) | Won 2-0 | +171611 |
| 3standard | 156 | Kou, Changsu (1762) | Lost 1-2 | -151596 |
| 4standard | 261 | Hayashi, Syouichirou (1515) | Won 2-0 | +161612 |
| 5standard | 119 | Naitou, Keisuke (1653) | Lost 1-2 | -171595 |
| 6standard | 150 | Umemura, Kouhei (1487) | Won 2-1 | +161611 |
| 7standard | 95 | Fuchita, Shouhei (1521) | Lost 0-2 | -201591 |
| 8standard | 164 | Yoshihara, Shinji (1486) | Won 2-1 | +161607 |
| 9standard | 267 | Kurahashi, Hironori (1539) | Won 2-0 | +171624 |
| top | average opponent: 1562record: 5-3 | new rating: 1624 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 694 | Ishihara, Susumu (1490) | Won 2-1 | +171589 |
| 4sealed | 765 | Farnung, Ian (1846) | Lost 0-2 | -141575 |
| 5sealed | 768 | Satou, Masanori (1536) | Lost 1-2 | -181557 |
| 6sealed | 812 | Yasuda, Masayuki (1745) | Won 2-1 | +211578 |
| 7sealed | 787 | Nakajima, Naoki (1535) | Lost 1-2 | -191559 |
| 8sealed | 999 | Mori, Kouki (1523) | Won 2-1 | +181577 |
| 9sealed | 957 | Watanabe, Yuuki (1544) | Won 2-1 | +171594 |
| top | average opponent: 1603record: 4-3 | new rating: 1594 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 222 | Nuruki, Hiroaki (1536) | Lost 1-2 | -191538 |
| 4standard | 242 | Takahira, Shunsuke (1507) | Lost 1-2 | -181520 |
| 5standard | 483 | Ito, Makoto (1468) | Won 2-0 | +171537 |
| 6standard | 266 | Miyoshi, Hiroki (1564) | Lost 0-2 | -181519 |
| 7standard | 477 | Yamazaki, Taichirou (1495) | Won 2-0 | +181537 |
| 8standard | 301 | Higuchi, Akashi (1532) | Won 2-1 | +181555 |
| 9standard | 185 | Koizumi, Hiroki (1518) | Won 2-0 | +171572 |
| top | average opponent: 1517record: 4-3 | new rating: 1572 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 210 | Imai, Satoshi (1667) | Won 2-0 | +211521 |
| 4modern | 156 | Kurihara, Yuuji (1554) | Won 2-0 | +191540 |
| 5modern | 64 | Kawaguchi, Hiroshi (1568) | Won 2-0 | +181558 |
| 6modern | 28 | Kurata, Yoshihiko (1576) | Won 2-0 | +181576 |
| 7modern | 20 | Kawaguchi, Takashi (1655) | Won 2-1 | +201596 |
| 8modern | 9 | Sakamoto, Sakito (1773) | Lost 1-2 | -151581 |
| 9modern | 9 | Nagami, Youichi (1649) | Lost 0-2 | -171564 |
| 10modern | 42 | Murae, Ryuji (1600) | Won 2-0 | +191583 |
| 11modern | 43 | Takahashi, Nozomu (1672) | Lost 0-2 | -161567 |
| 12modern | 63 | Aoki, Ryousuke (1765) | Won 2-0 | +211588 |
| 13modern | 27 | Ishii, Taisuke (1791) | Lost 1-2 | -141574 |
| 14modern | 41 | Takahashi, Kazuya (1589) | Lost 0-2 | -181556 |
| 15modern | 60 | Yamagata, Yutaro (1558) | Lost 0-2 | -181538 |
| 16modern | 58 | Kanazawa, Shuu (1575) | Won 2-0 | +191557 |
| top | average opponent: 1642record: 8-6 | new rating: 1557 | ||