Mai, Quoc C
Current rating: 1522
Record: 7-6
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 63 | Quinn, Daniel (1466) | Lost 1-2 | -191499 |
| 3sealed | 219 | Delia, Thomas (1501) | Won 2-1 | +181517 |
| 4sealed | 265 | Posey, Daniel (1518) | Won 2-1 | +181535 |
| 5sealed | 89 | Studley, James (1601) | Won 2-1 | +201555 |
| 6sealed | 81 | Postlethwait, William (1681) | Lost 0-2 | -161539 |
| 7sealed | 180 | Piazza, Brett (1655) | Lost 0-2 | -161523 |
| 8sealed | 147 | Corvese, Harry (1488) | Lost 0-2 | -191504 |
| 9sealed | 142 | Bodell, Griffin (1501) | Won 2-0 | +181522 |
| average opponent: 1551record: 4-4 | new rating: 1522 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Erskine, Ryan (1500) | Won 2-1 | +181518 |
| 2sealed | 69 | Beverley, Matthew (1564) | Lost 1-2 | -171501 |
| 3sealed | 237 | Gaudreau, Adam (1500) | Won 2-0 | +181519 |
| 4sealed | 118 | Colic, Alexander (1489) | Won 2-1 | +171536 |
| 5sealed | 95 | Gilbert, Nicholas (1539) | Lost 0-2 | -181518 |
| average opponent: 1518record: 3-2 | new rating: 1518 | |||