Yamamoto, Masafumi
Current rating: 1710 (#5904)
Record: 93-71-3
- 2015
- 2016
- 2017
- 2018
- 2019
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1756 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 377 | Hyodo, Kosuke (1665) | Lost 0-2 | -201736 |
| 4sealed | 488 | Mizuno, Akimitsu (1245) | Lost 0-2 | -261710 |
| top | average opponent: 1455record: 0-2 | new rating: 1710 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1691 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 445 | Bandou, Junichirou (1722) | Lost 0-2 | -171674 |
| 4modern | 371 | Moriya, Nobutoshi (1453) | Won 2-0 | +141688 |
| 5modern | 410 | Tomita, Hiroki (1377) | Won 2-1 | +121700 |
| 6modern | 219 | Mune, Kento (1608) | Lost 0-2 | -201680 |
| 7modern | 337 | Shirai, Shota 5117 (1517) | Won 2-0 | +161696 |
| 8modern | 161 | Murata, Tetsuhiro (1522) | Won 2-1 | +141710 |
| 9modern | 165 | Shimizu, Takeo (1404) | Won 2-1 | +131723 |
| 10modern | 117 | Fujita, Tsuyoshi (1918) | Lost 0-2 | -151708 |
| 11modern | 102 | Miyawaki, Takayuki (1480) | Won 2-1 | +141722 |
| 12modern | 70 | Okano, Toshiya (1770) | Won 2-0 | +191741 |
| 13modern | 68 | Kawaguchi, Takashi (1679) | Won 2-1 | +171758 |
| 14modern | 41 | Satou, Fumihiko (1627) | Won 2-0 | +161774 |
| 15modern | 39 | Koyama, Yuji (1787) | Lost 0-2 | -181756 |
| top | average opponent: 1605record: 9-4 | new rating: 1756 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1765 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 429 | Fukaya, Yuta (1551) | Won 2-0 | +141779 |
| 4standard | 195 | Hojo, Makoto (1564) | Lost 1-2 | -221757 |
| 5standard | 415 | Yokota, Kazuya (1588) | Lost 1-2 | -211736 |
| 6standard | 408 | Hosokawa, Kouta (1521) | Lost 1-2 | -221714 |
| 7standard | 464 | Kamei, Kazuhiko (1430) | Lost 0-2 | -231691 |
| top | average opponent: 1531record: 1-4 | new rating: 1691 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1751 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 393 | Shimoyama, Kazuma (1438) | Won 2-1 | +131764 |
| 5standard | 249 | Adachi, Kazumasa (1577) | Lost 1-2 | -211743 |
| 6standard | 303 | Matsubara, Shintaro (1561) | Won 2-1 | +141757 |
| 7standard | 217 | Shinagawa, Kazunari (1568) | Won 2-0 | +151772 |
| 8standard | 204 | Kobayashi, Chiaki (1593) | Won 2-1 | +151787 |
| 9standard | 50 | Nomura, Hiroshi (1666) | Won 2-0 | +151802 |
| 10standard | 18 | Wada, Yuki (1975) | Lost 0-2 | -141788 |
| 11standard | 42 | Ikawa, Yoshihiko (1915) | Lost 1-2 | -161772 |
| 12standard | 87 | Comley, Rainy (1552) | Won 2-0 | +141786 |
| 13standard | 66 | Ichikawa, Tomokazu (1610) | Lost 0-2 | -211765 |
| top | average opponent: 1645record: 6-4 | new rating: 1765 | ||
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1770 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 142 | Chang, Cheng Yu (1715) | Won 2-0 | +171787 |
| 4modern | 80 | Kim, Chang Kyum (1429) | Lost 1-2 | -241763 |
| 5modern | 119 | Tay, Daryl (1543) | Won 2-0 | +141777 |
| 6modern | 83 | Jiang, Yiren (1717) | Lost 1-2 | -191758 |
| 7modern | 167 | Inui, Takashi (1611) | Lost 1-2 | -211737 |
| 8modern | 175 | De Leon, Noel Ed (1520) | Won 2-0 | +141751 |
| top | average opponent: 1589record: 3-3 | new rating: 1751 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1841 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 483 | Mori, Hiroyuki (1508) | Lost 0-2 | -241817 |
| 4sealed | 644 | Ito, Sho (1478) | Lost 1-2 | -241793 |
| 5sealed | 682 | Takaki, Kengo (1519) | Lost 0-2 | -231770 |
| top | average opponent: 1502record: 0-3 | new rating: 1770 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1779 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 6 | Jiang, Yiren (1673) | Lost 0-2 | -191760 |
| 4sealed | 205 | Sato, Keisuke (1774) | Won 2-0 | +181778 |
| 5sealed | 63 | Wang, Xuan-ji (1805) | Won 2-0 | +181796 |
| 6sealed | 36 | Itazu, Yoshihisa (1572) | Won 2-0 | +141810 |
| 7sealed | 43 | Yoshida, Koki (1565) | Won 2-0 | +141824 |
| 8sealed | 39 | Takimura, Kazuyuki (1842) | Lost 1-2 | -181806 |
| 9sealed | 46 | Ju, Shuang (1650) | Won 2-0 | +151821 |
| 10draft | 10 | Zheng, Chang (1561) | Won 2-1 | +141835 |
| 11draft | 58 | Liang, Yan Jie (1697) | Won 2-0 | +151850 |
| 12draft | 69 | Sato, Naoki (1648) | Won 2-1 | +151865 |
| 13draft | 3 | Shan, Zhengdong (1787) | Won 2-1 | +161881 |
| 14draft | 3 | Mao, Dun (1846) | Lost 1-2 | -181863 |
| 15draft | 3 | Zhang, Dawei (1667) | Lost 0-2 | -221841 |
| top | average opponent: 1699record: 9-4 | new rating: 1841 | ||
| Grand Prix Shanghai 2017 (XLN standard) | starting rating: 1786 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 106 | Zhou, Rui (1491) | Lost 0-2 | -231763 |
| 4standard | 107 | Han, Bing (1919) | Lost 1-2 | -151748 |
| 5standard | 192 | Yu, Xin (1415) | Won 2-1 | +121760 |
| 6standard | 171 | Tomita, Kei (1583) | Draw 1-1 | -31757 |
| 7standard | 162 | Zhao, Yao (1428) | Won 2-0 | +121769 |
| 8standard | 109 | Zhang, Peiyang (1555) | Won 2-0 | +141783 |
| 9standard | 72 | Ren, Chao (1572) | Draw 1-1 | -41779 |
| top | average opponent: 1566record: 3-2-2 | new rating: 1779 | ||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1822 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 118 | Qiu, Ruibin (1565) | Won 2-1 | +131835 |
| 4sealed | 43 | Ng, Chi Fai (1677) | Lost 1-2 | -201815 |
| 5sealed | 149 | Chen, Edward (1570) | Won 2-0 | +131828 |
| 6sealed | 35 | Kobayashi, Tetsuro (1603) | Won 2-0 | +141842 |
| 7sealed | 50 | Indrakesuma, Taufik (1809) | Lost 1-2 | -181824 |
| 8sealed | 80 | Wee, Pang Ming (1959) | Lost 1-2 | -161808 |
| 9sealed | 121 | Kim, Chang-Hoi (1603) | Lost 0-2 | -221786 |
| top | average opponent: 1684record: 3-4 | new rating: 1786 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1772 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 180 | Miyamoto, Yutaro (1636) | Won 2-0 | +151787 |
| 4sealed | 191 | Inui, Takashi (1702) | Won 2-1 | +171804 |
| 5sealed | 138 | Kitamoto, Hiroki (1872) | Lost 1-2 | -171787 |
| 6sealed | 128 | Isurugi, Hideyuki (1685) | Won 2-0 | +161803 |
| 7sealed | 207 | Miyawaki, Takeshi (1664) | Won 2-1 | +161819 |
| 8sealed | 78 | Rountree, Collin (1946) | Won 2-0 | +201839 |
| 9sealed | 66 | Morotome, Ken (1734) | Lost 0-2 | -201819 |
| 10draft | 363 | Nukita, Yosuke (1738) | Won 2-0 | +171836 |
| 11draft | 179 | Chew, Kelvin (2236) | Lost 0-2 | -121824 |
| 12draft | 230 | Sun, Kuangda (1716) | Won 2-1 | +161840 |
| 13draft | 98 | Nagaoka, Takayuki (1819) | Lost 0-2 | -181822 |
| top | average opponent: 1795record: 7-4 | new rating: 1822 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1718 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 590 | Yamasaki, Takuya (1535) | Won 2-0 | +141732 |
| 4modern | 161 | Watanabe, Maki (1524) | Won 2-1 | +151747 |
| 5modern | 124 | Matsumoto, Kazuma 9174 (1628) | Lost 0-2 | -201727 |
| 6modern | 174 | Ikeda, Takahiro (1761) | Won 2-0 | +181745 |
| 7modern | 127 | Odachi, Kentarou (1556) | Won 2-1 | +151760 |
| 8modern | 102 | Ozaki, Naoto (1473) | Lost 1-2 | -231737 |
| 9modern | 138 | Horibe, Satoshi (1543) | Lost 0-2 | -221715 |
| 10modern | 303 | Fukuda, Yu (1561) | Won 2-0 | +151730 |
| 11modern | 125 | Fukushima, Shingo (1569) | Won 2-1 | +151745 |
| 12modern | 186 | Satou, Kenji (1609) | Won 2-1 | +161761 |
| 13modern | 47 | Hashizume, Tomohiro (1610) | Won 2-1 | +151776 |
| 14modern | 66 | Ishikawa, Takuma 0419 (1614) | Won 2-1 | +151791 |
| 15modern | 49 | Masatsugu, Tatsuya (1703) | Lost 0-2 | -191772 |
| top | average opponent: 1591record: 9-4 | new rating: 1772 | ||
| Grand Prix Beijing 2017 (AKH limited) | starting rating: 1640 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 182 | Ding, Yi (1678) | Lost 1-2 | -171623 |
| 4sealed | 337 | Li, Xiaoyan (1579) | Won 2-0 | +171640 |
| 5sealed | 187 | Zhou, Boyuan (1534) | Lost 0-2 | -201620 |
| 6sealed | 283 | Shang, Cheng Yan (1428) | Won 2-0 | +151635 |
| 7sealed | 124 | Matsuda, Yuuki (1468) | Won 2-0 | +151650 |
| 8sealed | 93 | Fu, Dang (1513) | Won 2-1 | +151665 |
| 9sealed | 41 | Pan, Guorong (1519) | Won 2-0 | +161681 |
| 10draft | 88 | Zhou, Jiacheng (1672) | Lost 1-2 | -181663 |
| 11draft | 80 | Yao, Di (1666) | Won 2-0 | +181681 |
| 12draft | 85 | Nanjo, Masashi (1904) | Won 2-1 | +221703 |
| 13draft | 11 | Li, Jun 7764 (1596) | Won 2-1 | +161719 |
| 14draft | 11 | Lv, Yanan (1597) | Lost 1-2 | -201699 |
| 15draft | 11 | Nguyen, Minh D (1764) | Won 2-0 | +191718 |
| top | average opponent: 1609record: 9-4 | new rating: 1718 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1602 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 275 | Anan, Kazuyoshi (1577) | Won 2-1 | +171619 |
| 4standard | 159 | Tanji, Kensuke (1600) | Lost 1-2 | -181601 |
| 5standard | 262 | Hayashi, Yuhei (1526) | Won 2-1 | +171618 |
| 6standard | 276 | Haritani, Ryosuke (1517) | Won 2-1 | +161634 |
| 7standard | 112 | Kagami, Takuya (1665) | Won 2-0 | +181652 |
| 8standard | 112 | Honda, Yuji (1678) | Won 2-0 | +191671 |
| 9standard | 21 | Sasabe, Yusuke (1661) | Lost 1-2 | -181653 |
| 10standard | 148 | Kiyonaga, Sho (1652) | Lost 1-2 | -181635 |
| 11standard | 189 | Oikawa, Takaaki (1569) | Won 2-1 | +171652 |
| 12standard | 116 | McNeace, Shawn (2050) | Lost 1-2 | -121640 |
| top | average opponent: 1650record: 6-4 | new rating: 1640 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 196 | Iwasaki, Junya (1457) | Won 2-1 | +171568 |
| 4legacy | 40 | Matsuo, Yoshiyuki (1690) | Draw 1-1 | +21570 |
| 5legacy | 147 | Harane, Kenta (1916) | Won 2-0 | +241594 |
| 6legacy | 81 | Setya, Steven Dirga (1801) | Won 2-1 | +221616 |
| 7legacy | 37 | Seguchi, Shinichirou (1538) | Lost 0-2 | -201596 |
| 8legacy | 122 | Suzuki, Takuto (1672) | Lost 0-2 | -161580 |
| 9legacy | 262 | Watabe, Jun (1593) | Won 2-1 | +181598 |
| 10legacy | 170 | Omonishi, Kojiro (1683) | Won 2-1 | +191617 |
| 11legacy | 98 | Nakahara, Yasuhiro (1621) | Lost 1-2 | -171600 |
| 12legacy | 181 | Chen, Yen-Hsiang (1496) | Won 2-0 | +161616 |
| 13legacy | 122 | Takada, Ryuto (1734) | Won 2-0 | +201636 |
| 14legacy | 76 | Ishida, Naomi (1547) | Lost 0-2 | -201616 |
| 15legacy | 124 | Cho, Jeong Woo (1821) | Lost 0-2 | -141602 |
| top | average opponent: 1659record: 7-5-1 | new rating: 1602 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 247 | Terazawa, Hiroyuki (1542) | Lost 0-2 | -191568 |
| 4standard | 581 | Torichigai, Noriaki (1486) | Won 2-0 | +171585 |
| 5standard | 391 | Sun, Bo (1907) | Lost 0-2 | -121573 |
| 6standard | 764 | Uehara, Jin (1504) | Lost 0-2 | -201553 |
| 7standard | 827 | Ohba, Hiroshi (1506) | Won 2-1 | +171570 |
| 8standard | 790 | Akatuka, Hidenori (1518) | Lost 1-2 | -191551 |
| top | average opponent: 1577record: 2-4 | new rating: 1551 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 420 | Omonishi, Kojiro (1604) | Won 2-0 | +201523 |
| 4sealed | 120 | Kikuchi, Kouhei (1629) | Lost 1-2 | -161507 |
| 5sealed | 285 | Yasui, Satoshi (1498) | Won 2-1 | +181525 |
| 6sealed | 207 | Nuruki, Hiroaki (1817) | Won 2-0 | +231548 |
| 7sealed | 158 | Sato, Keisuke (1676) | Won 2-1 | +201568 |
| 8sealed | 50 | Hasegawa, Shinya (1600) | Won 2-0 | +191587 |
| 9sealed | 24 | Kabashima, Takuya (1614) | Won 2-0 | +181605 |
| 10draft | 308 | Kumagai, Riku (1887) | Lost 1-2 | -121593 |
| 11draft | 8 | Hirosawa, Yuuta (1956) | Lost 0-2 | -121581 |
| 12draft | 175 | Ishikawa, Masayo (1606) | Lost 1-2 | -181563 |
| 13draft | 122 | Ma, Jack (1592) | Won 2-1 | +191582 |
| 14draft | 103 | Tanaka, Rizumu (1668) | Won 2-0 | +191601 |
| 15draft | 83 | Yamazaki, Yuuki (1810) | Lost 0-2 | -141587 |
| top | average opponent: 1689record: 8-5 | new rating: 1587 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 517 | Suzuki, Takahisa (1403) | Lost 0-2 | -201482 |
| 3standard | 723 | Akada, Yasunori (1568) | Lost 0-2 | -171465 |
| 4standard | 907 | Inuzuka, Satoshi (1647) | Lost 0-2 | -141451 |
| 5standard | 996 | Takahashi, Tomoo (1300) | Won 2-0 | +151466 |
| 6standard | 867 | Fukuda, Naoki (1487) | Won 2-1 | +181484 |
| 7standard | 716 | Maseguchi, Masashi (1356) | Lost 1-2 | -201464 |
| 8standard | 628 | Suzuki, Kazuto (1479) | Won 2-0 | +181482 |
| 9standard | 421 | Higono, Naoki (1653) | Won 2-0 | +211503 |
| top | average opponent: 1487record: 4-4 | new rating: 1503 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Tsumagari, Shuhei (1501) | Lost 1-2 | -181463 |
| 2sealed | 382 | Okawa, Jun (1448) | Lost 1-2 | -181445 |
| 3sealed | 581 | Nomura, Hiroshi (1487) | Lost 0-2 | -171428 |
| 4sealed | 526 | Takada, Toshiki (1448) | Won 2-0 | +181446 |
| 5sealed | 434 | Usui, Yuuka (1463) | Won 2-0 | +191465 |
| 6sealed | 353 | Lim, Ting Yong (1414) | Lost 0-2 | -191446 |
| 7sealed | 298 | Inami, Yuuki (1360) | Won 2-1 | +161462 |
| 8sealed | 221 | Mohd Khairul Anuar, Abdul Aziz (1660) | Won 2-0 | +221484 |
| 9sealed | 158 | Mizukoshi, Hideyuki (1482) | Won 2-0 | +181502 |
| top | average opponent: 1474record: 5-4 | new rating: 1502 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 739 | Tsutiya, Yukihiro (1500) | Lost 0-2 | -181482 |
| 2sealed | 1010 | Ito, Jin (1482) | Won 2-1 | +181500 |
| 3sealed | 912 | Nagai, Kentarou (1515) | Won 2-1 | +181518 |
| 4sealed | 788 | Horie, Yoshiaki (1446) | Lost 1-2 | -191499 |
| 5sealed | 928 | Sakurabayashi, Gaku (1500) | Lost 1-2 | -181481 |
| top | average opponent: 1489record: 2-3 | new rating: 1481 | ||