Nguyen, Sony
Current rating: 1519
Record: 4-3
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 233 | Stehlik, Mirek (1500) | Won 2-1 | +181518 |
| 2sealed | 164 | Gassauer-Fleissner, Severin (1518) | Lost 0-2 | -181500 |
| 3sealed | 133 | Policarp, Paul (1500) | Won 2-0 | +181518 |
| 4sealed | 185 | Weinhold, Brendan C (1518) | Won 2-0 | +181536 |
| 5sealed | 57 | Dosch, Sven (1485) | Lost 0-2 | -191517 |
| 6sealed | 119 | Gotze, Felix (1556) | Won 2-0 | +191536 |
| 7sealed | 101 | Jell, Philipp (1606) | Lost 0-2 | -171519 |
| average opponent: 1526record: 4-3 | new rating: 1519 | |||