Charm, Derek
Current rating: 1556
Record: 50-46-1
Grand Prix Hong Kong 2013Grand Prix Hong Kong 2015Grand Prix Taipei 2016Grand Prix Guangzhou 2016Grand Prix Hong Kong 2017Grand Prix Beijing 2018Grand Prix Hong Kong 2018Grand Prix Kyoto 2019Grand Prix Taipei 2019Grand Prix Bangkok 2019Regional Championships China 2022Regional Championships Shanghai 2023
| Regional Championships Shanghai 2023 (pioneer) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 66 | gan, ximu (1500) | Draw 1-1 | -21613 |
| 2pioneer | 50 | Song, Huachao (1837) | Lost 0-2 | -141599 |
| 3pioneer | 72 | Sujiarapat, Worrachot (1450) | Lost 1-2 | -211578 |
| 4pioneer | 84 | Kang, Xing (1598) | Won 2-0 | +181596 |
| 5pioneer | 64 | He, Zhuo (1503) | Lost 1-2 | -191577 |
| 6pioneer | 72 | Yan, Bin 2 (1456) | Lost 0-2 | -211556 |
| top | average opponent: 1557record: 1-4-1 | new rating: 1556 | ||
| Regional Championships China 2022 (pioneer) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| B1pioneer | 5 | Oei, Henry (1401) | Lost 1-2 | -231626 |
| B2pioneer | 6 | Cheng, Ting Hin (1685) | Lost 0-2 | -161610 |
| B3pioneer | 10 | Lam, CHO YIU (1522) | Lost 1-2 | -201590 |
| B4pioneer | 9 | Chan, Sze Hang (1971) | Won 2-0 | +251615 |
| top | average opponent: 1645record: 1-3 | new rating: 1615 | ||
| Grand Prix Bangkok 2019 (ELD limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 63 | Choo, Ida Maria (1406) | Won 2-0 | +141666 |
| 3sealed | 55 | Wang, Chaofan (1508) | Won 2-0 | +151681 |
| 4sealed | 65 | Goh, Guo Wei (1627) | Won 2-0 | +171698 |
| 5sealed | 33 | Krish, Rondy (1884) | Lost 1-2 | -141684 |
| 6sealed | 50 | Utsunomiya, Takumi (1707) | Lost 1-2 | -181666 |
| 7sealed | 99 | Balkaran, Sarvesh (1716) | Lost 0-2 | -171649 |
| top | average opponent: 1641record: 3-3 | new rating: 1649 | ||
| Grand Prix Taipei 2019 (WAR standard) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 176 | Takeda, Harunobu (1844) | Won 2-1 | +221647 |
| 3standard | 93 | Ishikawa, Takahiro (1632) | Won 2-1 | +181665 |
| 4standard | 59 | Goshima, Akito (1887) | Won 2-1 | +221687 |
| 5standard | 11 | Sun, Baoju (1626) | Lost 1-2 | -191668 |
| 6standard | 47 | Sakamoto, Aihei (1577) | Won 2-0 | +161684 |
| 7standard | 25 | Wentao, Qi (1852) | Lost 0-2 | -151669 |
| 8standard | 64 | Cho, Jae Seok (1735) | Lost 1-2 | -171652 |
| top | average opponent: 1736record: 4-3 | new rating: 1652 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1609 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 437 | Takemoto, Shintarou (1538) | Won 2-0 | +171626 |
| 3standard | 314 | Miyaguchi, Hiroki (1496) | Lost 1-2 | -211605 |
| 4standard | 572 | Kakimoto, Yuki (1476) | Won 2-0 | +161621 |
| 5standard | 261 | Takano, Kodai (1662) | Won 2-1 | +191640 |
| 6standard | 67 | Kobayashi, Tatsuumi (1979) | Lost 0-2 | -121628 |
| 7standard | 439 | Taniguchi, Hironobu (1520) | Lost 1-2 | -201608 |
| 8standard | 361 | Kimura, Yusuke (1594) | Won 2-0 | +171625 |
| top | average opponent: 1609record: 4-3 | new rating: 1625 | ||
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1637 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 57 | Takahashi, Ryo 3906 (1783) | Won 2-1 | +211658 |
| 3modern | 59 | Hu, Eric [CHN] (1565) | Lost 1-2 | -201638 |
| 4modern | 205 | Cheng, Zhuoxu (1551) | Lost 0-2 | -201618 |
| 5modern | 252 | Lancion, Daniel (1500) | Won 2-1 | +161634 |
| 6modern | 156 | Hamano, Kouhei (1528) | Lost 1-2 | -201614 |
| 7modern | 237 | Zhou, Hengtong (1497) | Lost 1-2 | -201594 |
| 8modern | 261 | Chen, Qitian (1406) | Won 2-1 | +151609 |
| top | average opponent: 1547record: 3-4 | new rating: 1609 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1691 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 172 | Bin, Jia (1815) | Lost 0-2 | -161675 |
| 4sealed | 276 | Suematsu, Takaaki (2012) | Lost 0-2 | -121663 |
| 5sealed | 302 | Wang, Haotian (1635) | Lost 0-2 | -181645 |
| 6sealed | 289 | Kang, Yameng (1380) | Won 2-0 | +131658 |
| 7sealed | 219 | Ling, Chen (1502) | Lost 0-2 | -211637 |
| top | average opponent: 1669record: 1-4 | new rating: 1637 | ||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 105 | Kondo, Hirotsugu (1421) | Lost 0-2 | -221608 |
| 4sealed | 160 | Lee, Wing Tat (1567) | Won 2-1 | +171625 |
| 5sealed | 105 | Bai, Hualin (1609) | Lost 0-2 | -181607 |
| 6sealed | 141 | Robertson, Chris (1584) | Lost 0-2 | -181589 |
| 7sealed | 228 | Takao, Shota (1751) | Won 2-0 | +211610 |
| 8sealed | 169 | Huang, Yu Chung (1690) | Won 2-1 | +191629 |
| 9sealed | 132 | Hsu, Shuo-En (1719) | Won 2-0 | +201649 |
| 10draft | 52 | Kintanar, Celsus (1684) | Lost 0-2 | -181631 |
| 11draft | 26 | Kim, Cynic (1798) | Won 2-1 | +211652 |
| 12draft | 51 | Xiao, Han (1786) | Won 2-0 | +211673 |
| 13draft | 17 | Wang, Jianian (1739) | Lost 0-2 | -171656 |
| 14draft | 85 | Chan, Tin Yan (1551) | Won 2-1 | +161672 |
| 15draft | 37 | Chan, Andy (1720) | Won 2-0 | +191691 |
| top | average opponent: 1663record: 8-5 | new rating: 1691 | ||
| Grand Prix Guangzhou 2016 (modern) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 49 | Ju, Yaqiong (1582) | Won 2-0 | +171618 |
| 3modern | 1018 | Tse, Yuk Yin (1577) | Lost 1-2 | -181600 |
| 4modern | 107 | Wang, Yunkang (1519) | Won 2-0 | +161616 |
| 5modern | 47 | Oikawa, Hakudou (1723) | Won 2-1 | +201636 |
| 6modern | 21 | Koh, Wee Lee Kelvin (1499) | Won 2-0 | +151651 |
| 7modern | 13 | Wong, Natalie (1572) | Won 2-0 | +171668 |
| 8modern | 18 | Pan, Minxing (1517) | Won 2-0 | +151683 |
| 9modern | 1003 | Wang, Xiaoxuan (1578) | Lost 1-2 | -201663 |
| 10modern | 47 | Zheng, Shuai (1569) | Won 2-0 | +171680 |
| 11modern | 29 | Kawasaki, Keita (2034) | Lost 0-2 | -121668 |
| 12modern | 36 | Zhang, Chaoxi (1610) | Lost 1-2 | -191649 |
| 13modern | 78 | Kaga, Hiroyuki (1620) | Lost 0-2 | -191630 |
| 14modern | 93 | Goh, Guo Wei (1612) | Lost 1-2 | -181612 |
| 15modern | 93 | Jia, Zhiyu (1608) | Won 2-1 | +181630 |
| top | average opponent: 1616record: 8-6 | new rating: 1630 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1685 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 130 | Tsai, He Yuan (1484) | Won 2-0 | +141699 |
| 3standard | 127 | Tanaka, Akira (1714) | Lost 1-2 | -181681 |
| 4standard | 212 | Wang, Hainan (1610) | Lost 0-2 | -191662 |
| 5standard | 245 | Lo, Robert (1500) | Lost 1-2 | -211641 |
| 6standard | 276 | Chang, Alan (1445) | Lost 0-2 | -221619 |
| 7standard | 298 | Yamauchi, Takahiro (1573) | Lost 0-2 | -181601 |
| top | average opponent: 1554record: 1-5 | new rating: 1601 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Lei, Ka Hou (1500) | Lost 1-2 | -191544 |
| 2sealed | 193 | Richley, Cory (1426) | Won 2-1 | +161560 |
| 3sealed | 34 | Chu, Chang-Hung (1322) | Won 2-0 | +141574 |
| 4sealed | 255 | Wu, Yanfei (1493) | Lost 1-2 | -201554 |
| 5sealed | 239 | Gu, Rong (1651) | Won 2-0 | +201574 |
| 6sealed | 222 | Kitahara, Hiroaki (1874) | Won 2-0 | +231597 |
| 7sealed | 160 | Han, Wishan (1554) | Won 2-1 | +181615 |
| 8sealed | 123 | Liu, Weinan (1553) | Won 2-0 | +161631 |
| 9sealed | 48 | Rosmarudin, Faizal (1537) | Won 2-1 | +171648 |
| 11draft | 18 | Nakano, Fumiki (1764) | Won 2-1 | +201668 |
| 12draft | 30 | Leong, Sio Chi (1715) | Lost 0-2 | -171651 |
| 13draft | 23 | Zhang, Duo (1623) | Won 2-1 | +171668 |
| 14draft | 5 | Jiang, Ruihui (1576) | Won 2-1 | +171685 |
| 15draft | 13 | Lai, Chi Hang (1690) | ID | 01685 |
| top | average opponent: 1591record: 10-3-1 | new rating: 1685 | ||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 146 | Kan, Johnny (1533) | Won 2-1 | +191519 |
| 2sealed | 190 | Tan, Wei Siong (1597) | Won 2-0 | +191538 |
| 3sealed | 199 | Seah, Lip Chee Eric (1522) | Won 2-1 | +181556 |
| 4sealed | 83 | Kremenchugski, Vladimir (1621) | Won 2-1 | +191575 |
| 5sealed | 20 | Lo, Ka Man (1537) | Won 2-1 | +171592 |
| 6sealed | 14 | Ouyang, Lin (1562) | Lost 0-2 | -181574 |
| 7sealed | 20 | Eng, Tiang Wah (1622) | Won 2-1 | +191593 |
| 8sealed | 24 | Lei, Yu Sheng (1754) | Lost 0-2 | -161577 |
| 9sealed | 77 | Kong, Chong Teng (1794) | Lost 1-2 | -141563 |
| top | average opponent: 1616record: 6-3 | new rating: 1563 | ||