Courtois, David
Current rating: 1517
Record: 6-5
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 42 | Chavez, Edgar (1500) | Lost 0-2 | -181481 |
| 2sealed | 201 | Branch, Patrick (1481) | Won 2-0 | +181499 |
| 3sealed | 155 | Hawkins, James (1500) | Won 2-0 | +181517 |
| 4sealed | 114 | Evaristo, Tommy (1474) | Won 2-0 | +181535 |
| 5sealed | 96 | Greenspan, Jonathan (1533) | Lost 0-2 | -181517 |
| average opponent: 1497record: 3-2 | new rating: 1517 | |||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 90 | Schultz, Patrick (1500) | Lost 0-0 | -181482 |
| 2sealed | 122 | Sabourin, Jason (1482) | Won 0-0 | +181500 |
| 3sealed | 148 | Hyde, Nathan (1500) | Lost 0-0 | -181482 |
| 4sealed | 162 | Todd, Clay (1482) | Won 0-0 | +181500 |
| 5sealed | 130 | Grandon, Dan (1463) | Won 0-0 | +171517 |
| 6sealed | 93 | Breck, Aaron (1519) | Lost 0-0 | -181499 |
| average opponent: 1491record: 3-3 | new rating: 1499 | |||