Yokoyama, Itaru
Current rating: 1712 (#5757)
Record: 49-34-1
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1680 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 640 | Nakamura, Fumitake (1566) | Won 2-0 | +161696 |
| 4standard | 106 | Hamada, Yuusai (1490) | Won 2-1 | +151711 |
| 5standard | 81 | Yoshida, Shintarou (1613) | Won 2-1 | +161727 |
| 6standard | 73 | Nakai, Sunao (1904) | Lost 1-2 | -151712 |
| 7standard | 129 | Chen, Jiabin (1681) | Won 2-1 | +181730 |
| 8standard | 86 | Takada, Ryuto (1778) | Won 2-1 | +181748 |
| 9standard | 13 | Moriya, Toshihiko (1672) | Lost 0-2 | -191729 |
| 10standard | 105 | Yasooka, Shota (2069) | Lost 0-2 | -121717 |
| 11standard | 225 | Segou, Kenji (1614) | Won 2-1 | +161733 |
| 12standard | 187 | Yamamoto, Ryoichi (1583) | Lost 0-2 | -211712 |
| top | average opponent: 1697record: 6-4 | new rating: 1712 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1704 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 256 | Ikawa, Shouta (1519) | Won 2-0 | +141718 |
| 3legacy | 161 | Bose, Timur (1394) | Lost 1-2 | -231695 |
| 4legacy | 454 | Omura, Hajime (1488) | Won 2-0 | +141709 |
| 5legacy | 330 | Oda, Katsumi (1437) | Lost 1-2 | -231686 |
| 6legacy | 563 | Nagano, Keita (1771) | Won 2-1 | +201706 |
| 7legacy | 502 | Sasao, Yusuke (1677) | Won 2-0 | +171723 |
| 8legacy | 360 | Tsukamoto, Mitsuru (1682) | Lost 0-2 | -191704 |
| 9legacy | 297 | Furukawa, Shun1524 (1541) | Won 2-0 | +151719 |
| 10legacy | 343 | Inui, Takashi (1702) | Lost 1-2 | -181701 |
| 11legacy | 352 | Ine, Ryosuke (1554) | Lost 0-2 | -211680 |
| top | average opponent: 1577record: 5-5 | new rating: 1680 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1702 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 217 | Hara, Yasuhiro (1533) | Won 2-1 | +151717 |
| 4standard | 221 | Kozaki, Yosuke (1610) | Won 2-1 | +161733 |
| 5standard | 35 | Nomura, Tsuyoshi (1606) | Won 2-1 | +161749 |
| 6standard | 34 | Kato, Kensuke (1751) | Lost 1-2 | -181731 |
| 7standard | 188 | Usui, Syou (1712) | Lost 1-2 | -191712 |
| 8standard | 293 | Hirata, Minoru (1533) | Won 2-1 | +151727 |
| 9standard | 188 | Ichinohe, Yujiro (1511) | Lost 0-2 | -221705 |
| 10standard | 376 | Tezuka, Yo (1877) | Lost 1-2 | -151690 |
| 11standard | 434 | Hodumi, Baku (1540) | Won 2-0 | +161706 |
| 12standard | 344 | Takano, Hayato (1605) | Draw 1-1 | -21704 |
| top | average opponent: 1628record: 5-4-1 | new rating: 1704 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1698 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 507 | Satou, Kenji (1618) | Won 2-0 | +161714 |
| 4sealed | 185 | Kamon, Noritoshi (1541) | Lost 1-2 | -211693 |
| 5sealed | 410 | Hatakeyama, Tomoki (1495) | Won 2-0 | +151708 |
| 6sealed | 111 | Hori, Masataka (1652) | Lost 1-2 | -191689 |
| 7sealed | 245 | Murase, Hiroshi (1896) | Won 2-0 | +211710 |
| 8sealed | 350 | Satonaka, Kentarou (1502) | Won 2-1 | +151725 |
| 9sealed | 197 | Sawada, Tetsushi (1575) | Lost 0-0 | -211704 |
| 10draft | 184 | Tanaka, Kimitaka (1697) | Won 2-0 | +181722 |
| 11draft | 204 | Kamioka, Masayuki (1645) | Won 2-0 | +161738 |
| 12draft | 124 | Sawada, Tetsushi (1632) | Lost 0-2 | -201718 |
| 13draft | 272 | Ozawa, Takeshi (1798) | Lost 1-2 | -161702 |
| top | average opponent: 1641record: 6-5 | new rating: 1702 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2282 | Otaki, Yuji (1500) | Won 2-1 | +171589 |
| 2sealed | 2041 | Tanaka, Shingo (1559) | Won 2-0 | +171606 |
| 3sealed | 2146 | Kashiwagi, Souta (1550) | Won 2-1 | +171623 |
| 4sealed | 2086 | Tamura, Heita (1553) | Won 2-1 | +171640 |
| 5sealed | 2029 | Hagiwara, Masakatsu (1612) | Lost 0-2 | -191621 |
| 6sealed | 2100 | Nakai, Shota (1552) | Won 2-1 | +171638 |
| 7sealed | 2031 | Murai, Tatsuya3542 (1580) | Lost 1-2 | -191619 |
| 8sealed | 2073 | Ichikawa, Yuuki (2070) | Won 2-1 | +261645 |
| 9sealed | 2052 | Nakashima, Hajime (1780) | Won 2-1 | +201665 |
| 10draft | 108 | Nagahashi, Sadaaki (1660) | Won 2-0 | +181683 |
| 11draft | 130 | Ishiguro, Youhei (1736) | Lost 0-2 | -171666 |
| 12draft | 68 | Semura, Junichi (1614) | Lost 0-2 | -191647 |
| 13draft | 103 | Watanabe, Ryuji (1629) | Won 2-0 | +181665 |
| 14draft | 167 | Watanabe, Akihito (1581) | Won 2-1 | +161681 |
| 15draft | 59 | Shinagawa, Kazunari (1604) | Won 2-0 | +171698 |
| top | average opponent: 1639record: 11-4 | new rating: 1698 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 788 | Nagano, Toshimitsu (1500) | Won 2-0 | +171559 |
| 2sealed | 694 | Murakami, Souta (1518) | Won 2-0 | +171576 |
| 3sealed | 731 | Murasawa, Yuuya (1539) | Lost 0-2 | -181558 |
| 4sealed | 746 | Miyahara, Eiji (1505) | Won 2-0 | +171575 |
| 5sealed | 714 | Mishima, Wataru (1634) | Won 2-1 | +191594 |
| 6sealed | 702 | Ooi, Masaki (1553) | Won 2-0 | +171611 |
| 7sealed | 640 | Hori, Masataka (1558) | Lost 1-2 | -191592 |
| 8sealed | 745 | Kiyokawa, Hidetoshi (1479) | Lost 0-2 | -201572 |
| top | average opponent: 1536record: 5-3 | new rating: 1572 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 73 | Koshi, Hiroto (1520) | Lost 0-2 | -191540 |
| 3sealed | 341 | Inukai, Yuichirou (1500) | Won 2-0 | +181558 |
| 4sealed | 237 | Nagaoka, Takayuki (1763) | Lost 1-2 | -151543 |
| 5sealed | 292 | Minemura, Hiroyuki (1560) | Lost 0-2 | -171526 |
| 6sealed | 264 | Iwaide, Yoshitaka (1426) | Won 2-1 | +161542 |
| top | average opponent: 1554record: 2-3 | new rating: 1542 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 73 | Okumura, Noriaki (1437) | Won 2-1 | +171517 |
| 2standard | 206 | Nagaya, Norimasa (1500) | Won 2-0 | +181535 |
| 3standard | 183 | Yasuda, Masayuki (1758) | Lost 1-2 | -141521 |
| 4standard | 112 | Horiuchi, Tatsuya (1520) | Lost 0-2 | -181503 |
| 5standard | 320 | Takakuwa, Minoru (1601) | Won 2-1 | +191522 |
| 6standard | 236 | Oshima, Takafumi (1581) | Won 2-1 | +191541 |
| 7standard | 166 | Kawahama, Yoshikazu (1609) | Won 2-0 | +201561 |
| 8standard | 74 | Yokoya, Hajime (1523) | Won 2-0 | +171578 |
| 9standard | 201 | Narita, Chisato (1533) | Lost 0-2 | -191559 |
| top | average opponent: 1563record: 6-3 | new rating: 1559 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 993 | Hanae, Ono (1500) | Lost 1-2 | -181482 |
| 2sealed | 1054 | Y., Shota (1482) | Lost 1-2 | -181464 |
| 3sealed | 1131 | Kobayashi, Shuniti (1465) | Won 2-1 | +181482 |
| 4sealed | 1086 | Kimura, Makoto (1482) | Won 2-0 | +181500 |
| 5sealed | 963 | Ito, Shinichi (1499) | Lost 0-2 | -181482 |
| 6sealed | 974 | Kitada, Yuichi (1483) | Won 2-0 | +181500 |
| top | average opponent: 1485record: 3-3 | new rating: 1500 | ||