Chang, Joseph [PHL]
Current rating: 1433
Record: 3-7-2
| Grand Prix Manila 2010 (ROE standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 378 | Caniezo, Marlon (1473) | Draw 1-1 | 01447 |
| 2standard | 241 | Go, Ian Mervin (1535) | Lost 1-2 | -161431 |
| 3standard | 360 | Segovia, Dennis Guy (1464) | Won 2-0 | +191450 |
| 4standard | 308 | Mamauag, John Paul M (1500) | Lost 0-2 | -171433 |
| average opponent: 1493record: 1-2-1 | new rating: 1433 | |||
| Grand Prix Hong Kong 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Tong, Christopher (1500) | Lost 0-2 | -181482 |
| 2sealed | 64 | Leung, Hon Chung (1484) | Lost 0-2 | -181464 |
| 3sealed | 96 | Au, Alex Chun Yiu (1464) | Lost 0-2 | -181446 |
| 4sealed | 123 | Leung, Ray (1444) | Lost 1-2 | -181428 |
| 5sealed | 120 | Fung, Wing Chung (1427) | Lost 0-0 | -181410 |
| 6sealed | 114 | Zhong, Wenyuan (1429) | Draw 1-1 | 01410 |
| 7sealed | 102 | Loi, Vincent (1428) | Won 2-0 | +191429 |
| 8sealed | 89 | Lau, Jack (1446) | Won 2-0 | +181447 |
| average opponent: 1453record: 2-5-1 | new rating: 1447 | |||