Chang, Yu Jen
Current rating: 1510
Record: 21-22-4
| Grand Prix Taipei 2012 (RTR limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Chen, Being (1477) | Won 2-0 | +171523 |
| 2sealed | 147 | Su, Yu Min (1517) | Draw 1-1 | 01523 |
| 3sealed | 114 | Eng, Edward A (1544) | Lost 1-2 | -171506 |
| 4sealed | 225 | chi, liu rung (1499) | Won 2-1 | +181524 |
| 5sealed | 164 | Chung, Tzu-Hao (1521) | Won 1-0 | +181542 |
| 6sealed | 110 | Jian, Guo Ping (1535) | Lost 0-2 | -191523 |
| 7sealed | 163 | Ruan, Paul (1524) | Won 2-0 | +181541 |
| 8sealed | 117 | Yen, Henry (1538) | Lost 1-2 | -181523 |
| 9sealed | 136 | Kubouchi, Naoki (1785) | Lost 0-2 | -131510 |
| top | average opponent: 1549record: 4-4-1 | new rating: 1510 | ||
| Grand Prix Taipei 2008 (ALA limited) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Tsai, Chang Lin (1500) | Lost 1-2 | -191491 |
| 2sealed | 65 | Chen, Syous (1481) | Won 2-0 | +181509 |
| 3sealed | 66 | Orihara, Jun (1529) | Won 2-1 | +191528 |
| 4sealed | 77 | Yeh, David (1518) | Lost 0-2 | -191509 |
| 5sealed | 87 | wu, Bing si (1500) | Won 2-0 | +181527 |
| 6sealed | 79 | Tsai, Miller Ming Yi (1430) | Lost 0-2 | -201507 |
| 7sealed | 86 | Kwok, Bone (1468) | Lost 0-2 | -181489 |
| 8sealed | 82 | Lin, Eagle (1449) | Won 2-0 | +171506 |
| top | average opponent: 1484record: 4-4 | new rating: 1506 | ||
| Grand Prix Beijing 2005 (extended) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 10 | Zhao, David [AUS] (1631) | Lost 0-1 | -171542 |
| 5extended | 33 | Saito, Takeshi (1535) | Won 1-0 | +181560 |
| 6extended | 22 | Bin, Jia (1500) | Won 2-0 | +171577 |
| 7extended | 6 | Ge, Min (1520) | Lost 0-2 | -191558 |
| 8extended | 22 | Ung-Aram, Tapparid (1567) | Lost 0-1 | -181540 |
| 9extended | 23 | Fujita, Osamu (1902) | Lost 0-2 | -121528 |
| 10extended | 31 | Long, Zhou (1519) | Lost 1-2 | -181510 |
| 12extended | 30 | Xue, Ke (1524) | Draw 1-1 | 01510 |
| 13extended | 27 | Zhang, Hui (1475) | Draw 1-1 | 01510 |
| top | average opponent: 1575record: 2-5-2 | new rating: 1510 | ||
| Grand Prix Taipei 2005 (Kamigawa block) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 39 | Hsu, Chao Shung Peter (1500) | Won 2-1 | +171577 |
| 3block | 22 | Jiang, Jacky (1581) | Won 2-0 | +181595 |
| 4block | 2 | Chun, Bo Ruad (1568) | Draw 1-1 | 01595 |
| 5block | 23 | Kao, Chi-lun (1555) | Lost 1-2 | -191576 |
| 6block | 46 | Kim, Min-Soo (1589) | Lost 0-2 | -181558 |
| 7block | 62 | Lee, Jason Lay Boon (1607) | Lost 1-2 | -171541 |
| 8block | 73 | Kuo, Ming Chen (1500) | Won 2-0 | +181559 |
| top | average opponent: 1557record: 3-3-1 | new rating: 1559 | ||
| Grand Prix Singapore 2005 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 19 | Wong, Alex Pu Siong (1480) | Won 2-0 | +181500 |
| 3extended | 5 | Eng, Boon Tat Elvin (1662) | Won 2-1 | +211521 |
| 4extended | 38 | Fujita, Osamu (1847) | Won 2-1 | +241545 |
| 5extended | 26 | Takeshita, Toru (1600) | Lost 1-2 | -171528 |
| 6extended | 42 | Yasooka, Shota (1659) | Lost 1-2 | -161512 |
| 7extended | 73 | Soh, Weng Heng (1608) | Won 2-0 | +201532 |
| 8extended | 49 | Leong, Ding Yuan (1743) | Won 2-0 | +221554 |
| 9extended | 21 | Tsumura, Kenji (1666) | Won 2-0 | +201574 |
| 10extended | 11 | Huang, Wen-Liang (1545) | Won 2-1 | +171591 |
| 11extended | 7 | Yasooka, Shota (1711) | Won 2-0 | +201611 |
| 12extended | 4 | Yeung, Sun Kit Sunny (1622) | Lost 1-2 | -181593 |
| 13extended | 8 | Kang, Gabriel (1611) | Lost 0-2 | -171576 |
| 14extended | 15 | Ong, Kok Seng (1719) | Lost 0-2 | -161560 |
| top | average opponent: 1652record: 8-5 | new rating: 1560 | ||
| Grand Prix Kaohsiung 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Hwang, Youn Ling (1500) | Lost 0-2 | -181482 |
| top | record: 0-1 | new rating: 1482 | ||