Tsang, Derek
Current rating: 1828 (#1556)
Record: 65-37-3
| Grand Prix Guangzhou 2016 (modern) | starting rating: 1851 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 65 | Fu, Yi (1476) | Lost 0-2 | -251826 |
| 2modern | 143 | Wu, Xiuxiao (1484) | Won 2-0 | +121838 |
| 3modern | 214 | Deng, Yang (1500) | Won 2-0 | +121850 |
| 4modern | 1078 | Chew Jun, George (1488) | Won 2-0 | +121862 |
| 5modern | 1074 | Wu, Kon Fai (1635) | Lost 1-2 | -221840 |
| 6modern | 136 | Liu, Jin 1269 (1521) | Won 2-1 | +121852 |
| 7modern | 48 | Dong, Xinqian (1505) | Lost 0-2 | -241828 |
| top | average opponent: 1516record: 4-3 | new rating: 1828 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1859 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 36 | Chen, Bonn (1379) | Won 2-1 | +91868 |
| 2standard | 89 | Kawachi, Yusuke (1627) | Lost 1-2 | -221846 |
| 3standard | 279 | Chun Chieh, Wang (1505) | Won 2-0 | +121858 |
| 4standard | 145 | Berry, Alex (1520) | Won 2-0 | +121870 |
| 5standard | 122 | Kawasaki, Keita (1966) | Lost 0-2 | -161854 |
| 6standard | 160 | Huang, Shao-Hua (1520) | Won 2-1 | +121866 |
| 7standard | 153 | Tsai, Jia-Han (1587) | Won 2-0 | +131879 |
| 8standard | 108 | Li, Youko (1601) | Won 2-1 | +131892 |
| 9standard | 75 | Murayama, Keiichiro (1529) | Lost 1-2 | -241868 |
| 10standard | 107 | Ong, Shu Liang (1478) | Won 2-0 | +111879 |
| 11standard | 84 | Kocsis, Gabor (1741) | Won 2-0 | +161895 |
| 12standard | 50 | Miyazono, Takeshi (1783) | Lost 0-2 | -211874 |
| 13standard | 72 | Law, Andriy (1539) | Lost 1-2 | -231851 |
| top | average opponent: 1598record: 8-5 | new rating: 1851 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1825 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 268 | Zhuang, Lingzheng (1490) | Won 2-1 | +121837 |
| 4sealed | 385 | Leung, Victor (1520) | Won 2-1 | +131850 |
| 5sealed | 30 | Sun, Bo (1902) | Lost 1-2 | -171833 |
| 6sealed | 112 | Borra, Lennaert (1495) | Lost 0-2 | -241809 |
| 7sealed | 154 | Gao, Tan (1768) | Won 2-0 | +171826 |
| 8sealed | 111 | Yasufuku, Akihiro (1696) | Won 2-1 | +161842 |
| 9sealed | 144 | Lee, Yuk Lam (1646) | Won 2-0 | +141856 |
| 10draft | 27 | Mihara, Makihito (2021) | Lost 1-2 | -151841 |
| 11draft | 29 | Zhou, Zirui (1584) | Won 2-0 | +141855 |
| 12draft | 27 | Ng, Wai Tat (1631) | Won 2-0 | +141869 |
| 13draft | 36 | Wijaya, Christian (1644) | Lost 0-2 | -221847 |
| 14draft | 32 | Chin, Wei Han (1790) | Won 2-0 | +171864 |
| 15draft | 18 | Wright, Christopher (1579) | Draw 1-1 | -51859 |
| top | average opponent: 1674record: 8-4-1 | new rating: 1859 | ||
| Grand Prix Taipei 2014 (M15 limited) | starting rating: 1837 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 177 | Hwang, Deng Shian (1500) | Won 2-1 | +131850 |
| 2sealed | 138 | Mung, Hermes Ho Kai (1498) | Lost 0-2 | -251825 |
| top | average opponent: 1499record: 1-1 | new rating: 1825 | ||
| Grand Prix Beijing 2014 (BNG standard) | starting rating: 1806 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 103 | Liu, Dongze (1500) | Won 2-1 | +131819 |
| 2standard | 40 | Wang, Nan 5101 (1518) | Won 2-1 | +131832 |
| 3standard | 3 | Wentao, Qi (1768) | Won 2-0 | +161848 |
| 4standard | 74 | Zhang, Zong yan (1553) | Won 2-1 | +131861 |
| 5standard | 15 | Mai, Weihao (1537) | Lost 1-2 | -241837 |
| top | average opponent: 1575record: 4-1 | new rating: 1837 | ||
| Grand Prix Singapore 2013 (RTR limited) | starting rating: 1769 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 201 | How, Wilfred (1567) | Won 2-1 | +141783 |
| 3sealed | 31 | Koo, Andy (1573) | Won 2-0 | +141797 |
| 4sealed | 11 | Siagian, Yohannes (1530) | Won 2-0 | +141811 |
| 5sealed | 19 | Ruan, Yi-Fei (1497) | Won 2-0 | +121823 |
| 6sealed | 11 | Lee, Rick Hup Beng (1761) | Won 2-0 | +171840 |
| 7sealed | 12 | Kanchanawaleekul, Worrawit (1631) | Lost 1-2 | -221818 |
| 8sealed | 19 | Arai, Kenichiro (1647) | Lost 0-2 | -211797 |
| 9sealed | 52 | Teo, Justin (1516) | ID | 01797 |
| 10draft | 26 | Tan, Richmond (1661) | Won 2-0 | +161813 |
| 11draft | 16 | Law, Albertus Hui Chin (1830) | Won 2-0 | +181831 |
| 12draft | 21 | Huang, Hao-Shan (1833) | Lost 0-2 | -181813 |
| 13draft | 61 | Lim, Shaun (1629) | Won 2-1 | +151828 |
| 14draft | 60 | Ong, Christopher U (1645) | Lost 0-2 | -221806 |
| top | average opponent: 1640record: 8-4-1 | new rating: 1806 | ||
| Grand Prix Taipei 2012 (RTR limited) | starting rating: 1616 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 23 | shen, ming syun (1518) | Won 2-0 | +161632 |
| 3sealed | 25 | Wang, Ren-Cheng (1536) | Won 2-0 | +171649 |
| 4sealed | 59 | Endo, Ryota (1873) | Won 2-1 | +221671 |
| 5sealed | 7 | Jam, Shanron Nien Hsie (1630) | Won 2-0 | +171688 |
| 6sealed | 17 | Abe, Motoki (1621) | Won 2-1 | +171705 |
| 7sealed | 9 | Lain, Jang-Hung (1634) | Won 2-1 | +161721 |
| 8sealed | 4 | Soh, Weng Heng (1993) | Won 2-1 | +231744 |
| 9sealed | 2 | To, Chun Him (1614) | Won 2-0 | +161760 |
| 10draft | 7 | Yamamoto, Akimasa (1863) | Lost 0-2 | -161744 |
| 11draft | 28 | Tsuchiya, Hideaki (1717) | Lost 1-2 | -191725 |
| 12draft | 13 | Yen, Yung Ta (1643) | Won 2-0 | +171742 |
| 13draft | 42 | Tsuchiya, Hideaki (1750) | Won 2-0 | +181760 |
| 14draft | 6 | Saito, Tomoharu (2017) | Won 2-1 | +221782 |
| 15draft | 1 | Mihara, Makihito (2038) | ID | 01782 |
| Qdraft | Soh, Weng Heng (2019) | Lost 0-2 | -131769 | |
| top | average opponent: 1765record: 11-3-1 | new rating: 1769 | ||
| Grand Prix Kuala Lumpur 2012 (DKA standard) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 102 | Ng, Ivan (1518) | Won 2-0 | +171604 |
| 3standard | 77 | Madin, Azrin (1522) | Won 2-0 | +161620 |
| 4standard | 82 | Chew, Robb (1518) | Lost 1-2 | -201600 |
| 5standard | 82 | Gunarto, Steven (1484) | Won 2-0 | +161616 |
| 6standard | 76 | Sugaya, Hironobu (1743) | Won 2-1 | +211637 |
| 7standard | 54 | Nitta, Yuki (1683) | Draw 1-1 | 01637 |
| 8standard | 38 | Goh, Yong Zhi Nicholas (1540) | Draw 1-1 | -11636 |
| 9standard | 63 | Lim, Teng Chek (1551) | Lost 0-2 | -201616 |
| top | average opponent: 1570record: 4-2-2 | new rating: 1616 | ||
| Grand Prix Shanghai 2011 (M12 limited) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 78 | Biyuan, Yuanqi (1536) | Won 2-0 | +171581 |
| 4sealed | 44 | Liang, Zhiyi (1662) | Won 2-1 | +201601 |
| 5sealed | 26 | Zhang, Qin (1571) | Won 2-0 | +171618 |
| 6sealed | 12 | Li, Jie (1750) | Lost 0-2 | -161602 |
| 7sealed | 32 | Li, Ming Jian (1445) | Lost 1-2 | -201582 |
| 8sealed | 90 | Hao, Xuanxuan (1559) | Won 2-0 | +171599 |
| 9sealed | 56 | Takahashi, Yuta (1928) | Lost 0-2 | -121587 |
| top | average opponent: 1636record: 4-3 | new rating: 1587 | ||
| Grand Prix Singapore 2011 (NPH standard) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 120 | Tan, Eng Giap (1375) | Won 2-0 | +151567 |
| 3standard | 12 | Cher, Chin Wee (1438) | Lost 0-2 | -211546 |
| 4standard | 135 | Siazon, Gerard (1499) | Won 2-0 | +181564 |
| 5standard | 78 | Lam, Tsz Yeung (1633) | Won 2-0 | +191583 |
| 6standard | 88 | Hiew, Chee Choong (1496) | Won 2-0 | +161599 |
| 7standard | 41 | Chiu, Chris (1563) | Lost 1-2 | -181581 |
| 8standard | 84 | Lee, Keng Yin (1636) | Lost 1-2 | -171564 |
| top | average opponent: 1520record: 4-3 | new rating: 1564 | ||
| Grand Prix Kuala Lumpur 2010 (WWK standard) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 16 | Kamarudin, Faizzudin (1536) | Lost 1-2 | -191543 |
| 4standard | 157 | Chua, Chang (1793) | Won 2-0 | +231566 |
| 5standard | 103 | Nakamura, Shuhei (1901) | Lost 0-2 | -131553 |
| 6standard | 103 | Asehan, Ceasar John (1554) | Won 2-0 | +181571 |
| 7standard | 80 | Qiu, Junliang (1489) | Lost 1-2 | -191552 |
| top | average opponent: 1654record: 2-3 | new rating: 1552 | ||
| Grand Prix Singapore 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 12 | Uzair, Faruqi (1486) | Won 2-0 | +181518 |
| 4extended | 6 | Shi, Gan (1466) | Lost 0-2 | -191499 |
| 5extended | 83 | Abdul Razak, Muhammad Farhan (1536) | Won 2-0 | +181517 |
| 6extended | 35 | Nakajima, Chikara (1798) | Won 2-0 | +231540 |
| 7extended | 10 | Watanabe, Yuuya (1858) | Lost 1-2 | -121528 |
| 8extended | 28 | Cai, Shaoken (1545) | Won 2-1 | +181546 |
| 9extended | 25 | Yaocheng, Mark (1578) | Lost 1-2 | -171529 |
| 10extended | 30 | Feng, Hao (1616) | Lost 1-2 | -161513 |
| 11extended | 34 | Su, Xu (1675) | Won 2-0 | +201533 |
| 12extended | 26 | How, Wilfred (1553) | Won 2-0 | +191552 |
| 13extended | 21 | Nakamura, Shuhei (2057) | Won 2-0 | +261578 |
| 14extended | 17 | Lin, Ruizi (1648) | Lost 1-2 | -161562 |
| top | average opponent: 1651record: 7-5 | new rating: 1562 | ||