Marques, Mark
Current rating: 1499
Record: 4-4
| Grand Prix Las Vegas 2001 (extended) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 13 | Frayer, Michael (1501) | Lost 1-2 | -181500 |
| 2extended | 144 | Mann, Shawn (1483) | Won 2-1 | +181518 |
| 3extended | 138 | Madrid, Antonio (1498) | Won 2-1 | +171535 |
| 4extended | 124 | Goertz, Jeremiah (1518) | Lost 0-2 | -181517 |
| 5extended | 152 | Redden, Alan (1500) | Lost 1-2 | -181499 |
| average opponent: 1500record: 2-3 | new rating: 1499 | |||
| Grand Prix Seattle 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 85 | Rounkles, David (1500) | Won 0-0 | +181518 |
| 2extended | 14 | Freneau, Phil (1535) | Lost 0-0 | -181500 |
| 3extended | 51 | Green, Kevin (1500) | Won 0-0 | +181518 |
| average opponent: 1512record: 2-1 | new rating: 1518 | |||