Pek, Dennis
Current rating: 1490
Record: 31-34-1
| Grand Prix Bangkok 2019 (ELD limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Sapri, Zuhaidi (1448) | Won 2-0 | +171521 |
| 2sealed | 163 | Pisawong, Surapong (1631) | Lost 0-2 | -161505 |
| 3sealed | 206 | Ishida, Ryouhei (1471) | Lost 0-2 | -191486 |
| 4sealed | 333 | Kim, Yong Su (1486) | Won 2-1 | +181504 |
| 5sealed | 203 | Hoh, Derik (1721) | Lost 1-2 | -141490 |
| top | average opponent: 1551record: 2-3 | new rating: 1490 | ||
| Grand Prix Singapore 2017 (XLN limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 148 | Koh, Raymond Liang (1500) | Lost 1-2 | -191525 |
| 2sealed | 145 | Lee, Al (1471) | Lost 0-2 | -191506 |
| 3sealed | 236 | Ong, Reuben (1461) | Won 2-0 | +171523 |
| 4sealed | 240 | Zainuddin, Zulkarnain (1474) | Lost 0-2 | -191504 |
| top | average opponent: 1477record: 1-3 | new rating: 1504 | ||
| Grand Prix Singapore 2015 (modern) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 106 | Luyun, Roy (1500) | Lost 0-2 | -191529 |
| 2modern | 345 | Chong Chih Hsiang, Dan (1482) | Won 2-0 | +181547 |
| 3modern | 421 | Lim, Andrew Chee Hoong (1550) | Won 2-0 | +181565 |
| 4modern | 277 | Ang, Wen Guang (1484) | Won 2-1 | +161581 |
| 5modern | 184 | Paiboonvarakit, Chanes (1537) | Lost 0-2 | -191562 |
| 6modern | 272 | Siew, Qi Heng (1515) | Lost 0-2 | -181544 |
| top | average opponent: 1512record: 3-3 | new rating: 1544 | ||
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 227 | Rotthaisong, Chanphen (1500) | Won 2-0 | +171565 |
| 2sealed | 6 | Sutthisakorn, Channarong (1622) | Won 2-1 | +191584 |
| 3sealed | 55 | Hiranyasiri, Pongsiri (1729) | Lost 0-2 | -151569 |
| 4sealed | 170 | Shiozu, Ryouma (1687) | Lost 1-2 | -161553 |
| 5sealed | 229 | Tipnakkham, Kowit (1502) | Won 2-0 | +171570 |
| 6sealed | 179 | Jirapongtrakul, Boonchai (1490) | Lost 1-2 | -191551 |
| 7sealed | 196 | Vachiraprakanskul, Tan (1499) | Won 2-0 | +171568 |
| 8sealed | 157 | Ruangchaiwong, Tanat (1483) | Lost 0-2 | -201548 |
| top | average opponent: 1564record: 4-4 | new rating: 1548 | ||
| Grand Prix Singapore 2013 (RTR limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Shen, Yan Ru (1573) | Lost 1-2 | -151420 |
| 2sealed | 240 | Lim Kelvin, Hong Wei (1481) | Won 2-0 | +191439 |
| 3sealed | 189 | Ederadan, Sherwin (1431) | Won 2-1 | +181457 |
| 4sealed | 129 | Fung, Ngan (1602) | Won 2-1 | +201477 |
| 5sealed | 131 | Wang, Chih Ming (1543) | Lost 0-2 | -171460 |
| 6sealed | 129 | Yaocheng, Mark (1638) | Won 2-0 | +221482 |
| 7sealed | 86 | Purnama, Erick C (1606) | Won 2-0 | +201502 |
| 8sealed | 57 | Lim, Zhong Yi (1498) | Won 2-0 | +181520 |
| 9sealed | 75 | Tay, Jun Hao (1721) | Won 2-0 | +221542 |
| 10draft | 7 | Chan, Alvin [MYS] (1662) | Lost 0-2 | -161526 |
| 11draft | 13 | Wang, Ray Sui Feng (1585) | Lost 1-2 | -171509 |
| 12draft | 60 | yeo, leck koon (1595) | Lost 1-2 | -171492 |
| 13draft | 5 | Sy, Daniel (1496) | Won 2-1 | +181510 |
| 14draft | 36 | Chia, Peng Chwan Dave (1599) | Won 2-0 | +201530 |
| 15draft | 47 | Oca, Ramon Allan (1547) | Won 2-1 | +181548 |
| top | average opponent: 1572record: 10-5 | new rating: 1548 | ||
| Grand Prix Taipei 2012 (RTR limited) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Chuang, Po-Yu (1500) | Won 2-0 | +191459 |
| 2sealed | 125 | Liu, Jiayang (1583) | Won 2-0 | +211480 |
| 3sealed | 66 | Nagami, Youichi (1720) | Lost 0-2 | -141466 |
| 4sealed | 164 | Lee, Shee-Hwei (1542) | Won 2-1 | +191485 |
| 5sealed | 79 | Hirabayashi, Yuki (1465) | Lost 0-2 | -181467 |
| 6sealed | 199 | Chi, Huang-Da (1501) | Lost 1-2 | -171450 |
| 7sealed | 184 | Chang, Tao Liang (1485) | Won 2-0 | +181468 |
| 8sealed | 131 | Ku, Teng Ju (1524) | Lost 1-2 | -171451 |
| 9sealed | 146 | Okada, Kou (1554) | Lost 0-2 | -161435 |
| top | average opponent: 1541record: 4-5 | new rating: 1435 | ||
| Grand Prix Singapore 2011 (NPH standard) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 58 | Khor, Chong Xiang (1500) | Won 2-1 | +191475 |
| 2standard | 45 | Siazon, Gerard (1500) | Won 2-1 | +181493 |
| 3standard | 61 | Ho, Wai Keong Kelvin (1484) | Lost 1-2 | -181475 |
| 4standard | 176 | Nakajima, Mikihito (1516) | Lost 1-2 | -171458 |
| 5standard | 230 | Md Noor, Noor Afandi (1486) | Lost 1-2 | -181440 |
| top | average opponent: 1497record: 2-3 | new rating: 1440 | ||
| Grand Prix Bangkok 2009 (M10 limited) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Raekchamnan, Sittiporn (1500) | Lost 1-2 | -191492 |
| 2sealed | 101 | Chee, Cristerson (1484) | Lost 1-2 | -181474 |
| 3sealed | 144 | Kusolsong, Boonyarat (1464) | Lost 1-2 | -181456 |
| top | average opponent: 1483record: 0-3 | new rating: 1456 | ||
| Grand Prix Kuala Lumpur 2006 (DIS limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 29 | Leong, Khai Loon (1500) | Draw 1-1 | +11467 |
| 2sealed | 78 | Ab Rahim, F. Iqbal (1482) | Won 2-1 | +181485 |
| 3sealed | 53 | Chua, David (1586) | Won 2-0 | +201505 |
| 4sealed | 49 | Yeh, Chao Lung (1690) | Lost 0-2 | -151490 |
| 5sealed | 84 | Cher, Chin Wee (1580) | Won 2-0 | +201510 |
| 6sealed | 53 | Chin, Yoon Fui (1536) | Lost 1-2 | -181492 |
| 7sealed | 80 | Faidzan, Ferhan (1516) | Won 2-0 | +191511 |
| top | average opponent: 1556record: 4-2-1 | new rating: 1511 | ||
| Grand Prix Singapore 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 23 | Chan, Weng Cheong Samuel (1500) | Won 2-1 | +181518 |
| 2extended | 21 | Lee, Jason Lay Boon (1588) | Lost 0-2 | -171501 |
| 3extended | 74 | Watabe, Naoto (1515) | Lost 1-2 | -171484 |
| 4extended | 147 | Siagian, Yohannes (1506) | Lost 1-2 | -181466 |
| top | average opponent: 1527record: 1-3 | new rating: 1466 | ||