Chang, Chih Kai
Current rating: 1453
Record: 3-6
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 352 | Anderson, Maria (1500) | Won 2-0 | +191485 |
| 2sealed | 49 | Hiles, Christopher (1567) | Lost 1-2 | -171468 |
| 3sealed | 676 | Karnes, Kevin (1500) | Lost 0-2 | -171451 |
| 4sealed | 612 | Schaffzin, Benjamin (1481) | Won 2-0 | +181469 |
| 5sealed | 492 | Rios, Matthew (1531) | Lost 1-2 | -161453 |
| average opponent: 1516record: 2-3 | new rating: 1453 | |||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 624 | Paolucci, Angelo (1497) | Won 0-0 | +181518 |
| 2sealed | 557 | Sadowsky, Joel (1518) | Lost 1-2 | -181500 |
| 3sealed | 805 | Sterner, Edward (1630) | Lost 1-2 | -161484 |
| 4sealed | 924 | Petrie, Chuck A (1481) | Lost 1-2 | -181466 |
| average opponent: 1531record: 1-3 | new rating: 1466 | |||