Lontra, Marcus
Current rating: 1503
Record: 6-6-1
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 68 | Franco, Andre (1556) | Draw 1-1 | +21463 |
| 2sealed | 87 | Waite, Pedro (1500) | Won 2-0 | +191482 |
| 3sealed | 51 | Ventura, Roberto (1535) | Lost 1-2 | -171465 |
| 4sealed | 108 | Higor, Leonardo (1481) | Won 2-0 | +181483 |
| 5sealed | 67 | Strona, Rafael (1517) | Lost 0-2 | -171466 |
| 6sealed | 94 | Kobayashi, Mauricio (1499) | Won 2-0 | +181484 |
| 7sealed | 68 | Schaidhauer, Diego Dias (1519) | Won 2-0 | +191503 |
| average opponent: 1515record: 4-2-1 | new rating: 1503 | |||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 86 | Ball, Jon (1500) | Lost 1-2 | -181482 |
| 2block | 125 | Dunn, Chris 2 (1330) | Won 2-0 | +151497 |
| 3block | 124 | Machado, Kyle (1499) | Lost 0-2 | -181479 |
| 4block | 190 | Parvin, Samuel (Skip) (1482) | Won 2-0 | +181497 |
| 5block | 125 | Schildt, Ahren (1500) | Lost 0-2 | -181479 |
| 6block | 156 | Meerbott, James (1483) | Lost 0-2 | -181461 |
| average opponent: 1466record: 2-4 | new rating: 1461 | |||