Hoshi, Kazuto
Current rating: 1728 (#4910)
Record: 51-31-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1725 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 141 | Ichii, Hiroaki (1479) | Won 2-1 | +131738 |
| 2pioneer | 265 | Yanagidate, Ikumi (1479) | Lost 1-2 | -221716 |
| 3pioneer | 506 | Ootani, Yousuke (1651) | Won 2-0 | +171733 |
| 4pioneer | 411 | Aihara, Shogaku (1537) | Won 2-0 | +141747 |
| 5pioneer | 113 | Fukutani, Mitumasa (1238) | Won 2-0 | +101757 |
| 6pioneer | 177 | Ikeda, Yuuki (1614) | Won 2-0 | +151772 |
| 7pioneer | 135 | Saito, Naoki (1610) | Lost 1-2 | -211751 |
| 8pioneer | 162 | Matsuura, Fumiya (1622) | Won 2-0 | +161767 |
| 9pioneer | 139 | Nakayama, Hiroshi (1523) | Won 2-1 | +131780 |
| 10pioneer | 74 | Nakane, Takamichi (1606) | Lost 0-2 | -211759 |
| 11pioneer | 88 | Abe, Masahide (1500) | Won 2-0 | +141773 |
| 12pioneer | 55 | Aoki, Ryousuke (1708) | Won 2-1 | +161789 |
| 13pioneer | 29 | Maeba, Hideaki (1865) | Lost 1-2 | -161773 |
| 14pioneer | 77 | Takemura, Daichi (1576) | Lost 1-2 | -221751 |
| 15pioneer | 98 | Koike, Tomoyuki (1437) | Lost 0-2 | -231728 |
| top | average opponent: 1563record: 9-6 | new rating: 1728 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1756 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 374 | Izumitani, Takuma (1430) | Won 2-1 | +121768 |
| 2modern | 223 | Reyes, Carlo (1561) | Won 2-0 | +141782 |
| 3modern | 78 | Kuze, Hiroki (1535) | Won 2-1 | +141796 |
| 4modern | 178 | Okada, Koji (1467) | Won 2-0 | +121808 |
| 5modern | 111 | Endo, Ryota (1953) | Lost 1-2 | -161792 |
| 6modern | 244 | Sato, Hirotaka (1521) | Lost 1-2 | -221770 |
| 7modern | 240 | Kusafuka, Takuma (1496) | Lost 1-2 | -231747 |
| 8modern | 504 | Meng, Yuning (1527) | Lost 1-2 | -221725 |
| top | average opponent: 1561record: 4-4 | new rating: 1725 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1731 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 75 | Tomizawa, Shoudai (1551) | Won 2-1 | +151746 |
| 3legacy | 490 | Nakajima, Hiroki (1357) | Won 2-0 | +111757 |
| 4legacy | 295 | Yamada, Yousuke1749 (1554) | Lost 1-2 | -211736 |
| 5legacy | 528 | Iitsuka, Yuuki (1620) | Won 2-1 | +151751 |
| 6legacy | 99 | Touma, Norihiro (1551) | Lost 1-2 | -211730 |
| 7legacy | 242 | Ukyou, Kazuma (1422) | Won 2-0 | +121742 |
| 8legacy | 279 | Kagotani, Naota (1637) | Lost 1-2 | -191723 |
| 9legacy | 508 | Fujikawa, Naoki (1526) | Won 2-0 | +141737 |
| 10legacy | 250 | Futada, Takahiro (1551) | Won 2-0 | +151752 |
| 11legacy | 154 | Ogawa, Masaru (1576) | Won 2-1 | +141766 |
| 12legacy | 117 | Yamaguchi, Shouta (1616) | Won 2-1 | +161782 |
| 13legacy | 85 | Shibata, Hirotaka (1585) | Lost 1-2 | -221760 |
| 14legacy | 87 | Ootani, Yousuke (1648) | Lost 1-2 | -201740 |
| 15legacy | 183 | Sim, Daryl (1592) | Won 2-0 | +161756 |
| top | average opponent: 1556record: 9-5 | new rating: 1756 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1712 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 146 | Saitou, Hidetaka (1553) | Won 2-1 | +151727 |
| 3standard | 67 | Yokoya, Hajime (1500) | Lost 1-2 | -221705 |
| 4standard | 276 | Yamashita, Kohji (1289) | Won 2-1 | +111716 |
| 5standard | 141 | Katsubayashi, Nobuhisa (1603) | Won 2-1 | +151731 |
| 6standard | 57 | Nakamichi, Daisuke (1655) | Won 2-1 | +171748 |
| 7standard | 50 | Mori, Katsuhiro (1986) | Lost 0-2 | -141734 |
| 8standard | 81 | Shimizu, Naoki (1780) | Lost 0-2 | -171717 |
| 9standard | 240 | Haseba, Tatsuya (1499) | Won 2-0 | +141731 |
| top | average opponent: 1608record: 5-3 | new rating: 1731 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 109 | Saito, Taishi (1456) | Lost 0-2 | -211575 |
| 2sealed | 422 | Shibue, Takahiro (1430) | Won 2-1 | +161591 |
| 3sealed | 209 | Shimizu, Kazumi (1482) | Won 2-0 | +161607 |
| 4sealed | 304 | Yamazaki, Yuki (Nagano) (1517) | Lost 0-2 | -201587 |
| 5sealed | 259 | Ishiguro, Satoshi0631 (1482) | Won 2-0 | +161603 |
| 6sealed | 161 | Sugaya, Hironobu (1757) | Won 2-1 | +211624 |
| 7sealed | 102 | Andou, Jyou (1541) | Won 2-1 | +161640 |
| 8sealed | 274 | Mihara, Ryo (1512) | Won 2-0 | +161656 |
| 9sealed | 253 | Palungwachira, Pakhawa (1508) | Won 2-0 | +151671 |
| 10sealed | 103 | Satake, Yukihiro (1728) | Won 2-0 | +191690 |
| 11sealed | 55 | Nam, Kyung Hwan (1488) | Won 2-0 | +151705 |
| 12draft | 107 | Watanabe, Yuuya (2094) | Lost 1-2 | -111694 |
| 13draft | 39 | Kanetuna, Yoshinori (1590) | Won 2-0 | +161710 |
| 14draft | 76 | Yamamoto, Akimasa (1881) | Won 2-0 | +211731 |
| 15draft | 53 | Gao, Tan (1712) | Lost 0-2 | -191712 |
| 16draft | 24 | Ebitani, Keisuke (1634) | Won 2-1 | +171729 |
| 17draft | 40 | Kikuchi, Satoru (1761) | Lost 0-2 | -171712 |
| top | average opponent: 1622record: 12-5 | new rating: 1712 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 69 | Sakuma, Toshimitsu (1659) | Lost 1-2 | -141451 |
| 2standard | 252 | Matsui, Jun (1481) | Won 2-0 | +181469 |
| 3standard | 267 | Kawai, Yusuke (1523) | Won 2-1 | +191488 |
| 4standard | 168 | Takeda, Hiroki (1569) | Won 2-0 | +201508 |
| 5standard | 85 | Sasaki, Yuki (1441) | Won 2-1 | +161524 |
| 6standard | 74 | Kimura, Kazuki (1728) | Won 2-0 | +221546 |
| 7standard | 39 | Kimura, Shigeki (1608) | Won 2-0 | +191565 |
| 8standard | 39 | Hassaku, Jinpei (1699) | Won 2-1 | +211586 |
| 9standard | 14 | Watanabe, Ryuji (1567) | Won 2-0 | +171603 |
| 10standard | 9 | Tasaki, Ryo (1764) | Lost 1-2 | -151588 |
| 11standard | 27 | Nakamura, Takatoshi (1731) | Lost 1-2 | -151573 |
| 12standard | 41 | Tonouchi, Keita (1555) | Won 2-0 | +181591 |
| 13standard | 22 | Soh, Weng Heng (1716) | Won 2-1 | +201611 |
| 14standard | 26 | Hirashima, Yuutarou (1778) | Lost 1-2 | -151596 |
| 15standard | 36 | Komatsu, Satoshi (1600) | ID | 01596 |
| top | average opponent: 1628record: 10-4-1 | new rating: 1596 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 192 | Takahara, Sho (1500) | Won 2-0 | +181518 |
| 2block | 75 | Shimizu, Junji (1539) | Lost 0-2 | -181500 |
| 3block | 316 | Nicolas, Vesale (1503) | Draw 1-1 | 01500 |
| 4block | 257 | Ito, Yoshimasa (1513) | Lost 1-2 | -171483 |
| 5block | 306 | Hisaki, Yuu (1516) | Won 2-1 | +181501 |
| 6block | 242 | Tanahashi, Masayasu (1498) | Lost 1-2 | -181483 |
| 7block | 257 | Morishita, Taiki (1482) | Lost 0-2 | -181465 |
| top | average opponent: 1507record: 2-4-1 | new rating: 1465 | ||