Eng, Boon Tat Elvin
Current rating: 1597
Record: 28-20-5
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Yip, Cheson (1438) | Draw 1-1 | -31619 |
| 2sealed | 204 | Matsumura, Taku (1499) | Lost 1-2 | -201599 |
| 3sealed | 358 | Wong, Wai Kin (1482) | Won 2-0 | +161615 |
| 4sealed | 307 | Wong, Chi Keung (1622) | Lost 0-2 | -181597 |
| top | average opponent: 1510record: 1-2-1 | new rating: 1597 | ||
| Grand Prix Kuala Lumpur 2006 (DIS limited) | starting rating: 1633 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Pang, Kelvin (1676) | Won 2-0 | +181651 |
| 2sealed | 13 | Chu, Louis (1475) | Draw 1-1 | -31648 |
| 3sealed | 48 | Tay, Wee Kiat Andrew (1470) | Draw 1-1 | -31645 |
| 4sealed | 103 | Kwok, Bone (1484) | Won 2-1 | +151660 |
| 5sealed | 75 | Chang, Mark (1624) | Lost 0-2 | -181642 |
| 6sealed | 99 | Hassan, Shahrizan Ferouz (1571) | Lost 1-2 | -201622 |
| top | average opponent: 1550record: 2-2-2 | new rating: 1622 | ||
| Grand Prix Singapore 2005 (extended) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 54 | Fan, Kah Ping Nelson (1518) | Won 2-0 | +161662 |
| 3extended | 5 | Chang, Yu Jen (1500) | Lost 1-2 | -211641 |
| 4extended | 68 | Lim, Tae-hyun (1525) | Lost 1-2 | -201621 |
| 5extended | 107 | Wu, Sebastian (1500) | Lost 0-2 | -201601 |
| 6extended | 152 | Su, Jee Hung (1497) | Won 2-1 | +161617 |
| 7extended | 112 | Lim, Ke You (1503) | Won 2-1 | +161633 |
| top | average opponent: 1507record: 3-3 | new rating: 1633 | ||
| Grand Prix Kuala Lumpur 2004 (5DN standard) | starting rating: 1620 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 31 | Aw Yeong, Weng Kwong (1515) | Won 2-0 | +161636 |
| 3standard | 1 | Tan, David (1519) | Lost 0-2 | -201616 |
| 4standard | 64 | Ong, Boon Kiat (1558) | Won 2-0 | +171633 |
| 5standard | 25 | Koay, Arnold (1534) | Won 2-1 | +161649 |
| 6standard | 23 | Zee, Way Leong (1670) | Lost 0-2 | -181631 |
| 7standard | 50 | Yap, Clifford Tsiang Ming (1470) | Won 2-0 | +151646 |
| top | average opponent: 1544record: 4-2 | new rating: 1646 | ||
| Grand Prix Singapore 2003 (LGN limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 12 | Hong, Jiahao (1500) | Won 2-1 | +171576 |
| 2sealed | 41 | Yuliadinata, Dennis (1553) | Won 2-1 | +181594 |
| 3sealed | 7 | Thio, Russell (1518) | Won 2-1 | +161610 |
| 4sealed | 1 | Chai, Royce Ming Huang (1786) | Won 2-0 | +211631 |
| 5sealed | 3 | Hwang, Wen Jien (1748) | Won 2-0 | +201651 |
| 6sealed | 7 | Yap, Jing Yang (1559) | Won 2-0 | +171668 |
| 7sealed | 2 | Hoon, Kelvin (1739) | Lost 1-2 | -171651 |
| 8draft | 1 | Song, Huachao (1543) | Lost 0-2 | -201631 |
| 9draft | 15 | Wallin, Johnny (1549) | Won 2-1 | +171648 |
| 10draft | 24 | Tan, Gary Gui Ping (1674) | Lost 0-2 | -181630 |
| 11draft | 25 | Tan, Steve Wei Quan (1648) | Lost 0-2 | -181612 |
| 12draft | 25 | Law, Albertus Hui Chin (1883) | Lost 1-2 | -131599 |
| 13draft | 24 | Chai, Royce Ming Huang (1733) | Won 2-1 | +211620 |
| top | average opponent: 1649record: 8-5 | new rating: 1620 | ||
| Grand Prix Hong Kong 2001 (ODY limited) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 10 | Soh, Joe (1449) | Lost 0-2 | -211586 |
| 2sealed | 54 | Chiu, Marcus (1482) | Draw 1-1 | -11585 |
| 3sealed | 60 | Wong, Henry T (1482) | Draw 1-1 | -21583 |
| 4sealed | 85 | Chan, Larry Wai Man (1482) | Lost 0-2 | -201563 |
| 5sealed | 84 | Leung, Ken (1464) | Won 2-0 | +161579 |
| 6sealed | 71 | Ng, Ka Man (1465) | Lost 0-2 | -201559 |
| top | average opponent: 1471record: 1-3-2 | new rating: 1559 | ||
| Grand Prix Singapore 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 12 | Chang, Mark (1518) | Lost 1-2 | -181482 |
| 3extended | 53 | Chee, Kin Seng Alferd (1501) | Won 2-0 | +191501 |
| 4extended | 70 | Yuen, Kwan Ching (1519) | Won 2-0 | +181519 |
| 5extended | 40 | Lim, Tzer Chern (1536) | Lost 0-2 | -181501 |
| 6extended | 40 | Sirimanne, Barry (1350) | Won 2-0 | +161517 |
| 7extended | 45 | Zhu, Benjamin Zhiwei (1478) | Won 2-0 | +171534 |
| 8extended | 19 | Lim, Jian Liang (1505) | Won 2-0 | +171551 |
| 9extended | 16 | Gooi, Chih Hong (1557) | Won 2-0 | +181569 |
| 10extended | 11 | Soh, Heng Huat Rowan (1586) | Won 2-1 | +191588 |
| 11extended | 7 | Low, Fook Chuan Donny (1559) | Won 2-0 | +171605 |
| 12extended | 3 | Epley, Alan (1608) | Won 2-0 | +181623 |
| 13extended | 2 | Tham, Tishen (1618) | ID | 01623 |
| Qextended | Higashino, Masayuki (1736) | Lost 0-2 | -161607 | |
| top | average opponent: 1544record: 9-3-1 | new rating: 1607 | ||