Chang, Ken
Current rating: 1425
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 508 | Lynch, Michael (1527) | Won 2-1 | +191455 |
| 2standard | 434 | Chan, Eric (1534) | Lost 1-2 | -161439 |
| 3standard | 510 | Lemoine, Blake (1498) | Won 2-0 | +191458 |
| 4standard | 455 | Nieto, Manuel (1578) | Lost 0-2 | -161442 |
| 5standard | 576 | Douglas, Joshua (1507) | Lost 0-2 | -171425 |
| top | average opponent: 1529record: 2-3 | new rating: 1425 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 101 | Balagot, Stefan (1518) | Won 2-0 | +181505 |
| 4sealed | 69 | Swiney, Bruce (1519) | Lost 1-2 | -181487 |
| 5sealed | 218 | Avila, Eric (1558) | Lost 0-2 | -161471 |
| 6sealed | 198 | Zhang, Xiaoji (1497) | Lost 0-2 | -181453 |
| 7sealed | 240 | Enzensperger, Joseph (1488) | Lost 0-2 | -171436 |
| top | average opponent: 1516record: 1-4 | new rating: 1436 | ||
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Kunkel, Thomas (1500) | Won 2-0 | +181518 |
| 2sealed | 398 | Bulthaup, Bryan (1571) | Won 2-0 | +191537 |
| 3sealed | 6 | Galli, Jeremiah (1464) | Lost 1-2 | -191518 |
| 4sealed | 375 | Aune, Eirik (1797) | Lost 1-2 | -131505 |
| 5sealed | 434 | Saulus-Hernandez, Joey (1504) | Lost 0-2 | -181487 |
| top | average opponent: 1567record: 2-3 | new rating: 1487 | ||