Penna, Mario
Current rating: 1486
Record: 6-7
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 45 | Ferreira, Frederico (1500) | Lost 0-2 | -181486 |
| 2sealed | 296 | Martins, Joao (1483) | Won 2-1 | +181504 |
| 3sealed | 158 | Oliveira, Rui (1500) | Lost 1-2 | -181486 |
| average opponent: 1494record: 1-2 | new rating: 1486 | |||
| Grand Prix Madrid 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 115 | Galan Rubio, Francisco (1500) | Won 2-0 | +181518 |
| 2extended | 69 | Vazquez, Francisco Fidel (1572) | Won 2-0 | +191537 |
| 3extended | 15 | Castro, Miguel 2 (1536) | Won 2-1 | +181555 |
| 4extended | 7 | Bui, Lucien (1561) | Won 2-1 | +181573 |
| 5extended | 7 | Isidro, Joao (1601) | Lost 0-2 | -171556 |
| 6extended | 24 | Navarro Arroyo, Andres (1522) | Won 2-1 | +171573 |
| 7extended | 17 | Gonzalez, Xavi (1571) | Lost 0-2 | -181555 |
| 8extended | 32 | Pacifici, Guido (1570) | Lost 0-1 | -181537 |
| 9extended | 28 | Buene, Oystein (1670) | Lost 0-2 | -151522 |
| 10extended | 29 | Castrillo, Jorge (1535) | Lost 1-2 | -181504 |
| average opponent: 1564record: 5-5 | new rating: 1504 | |||