de Simon Perez, Juan Fernando
Current rating: 1486
Record: 5-6
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 551 | Polo, Roberto (1519) | Won 2-0 | +191484 |
| 2sealed | 301 | Lazaro Silva, Felix (1518) | Won 2-1 | +191503 |
| 3sealed | 135 | Ruiz, Julio Jose (1535) | Won 2-1 | +181521 |
| 4sealed | 83 | Lopez Losada, Jose Carlos (1500) | Lost 1-2 | -181503 |
| 5sealed | 124 | Alonso Azcarate, Jacinto (1573) | Lost 1-2 | -171486 |
| average opponent: 1529record: 3-2 | new rating: 1486 | |||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Montserrat, Chris (1500) | Lost 0-2 | -181482 |
| 2sealed | 368 | Cristobal, Pablo Fuento (1483) | Won 2-0 | +181500 |
| 3sealed | 193 | Amador, Agustin (1500) | Won 2-1 | +181518 |
| 4sealed | 100 | Mata, Diego (1586) | Lost 0-2 | -171501 |
| 5sealed | 178 | Alberti, Valentin (1499) | Lost 1-2 | -181483 |
| 6sealed | 256 | Pallerols, Jordi (1484) | Lost 1-2 | -181465 |
| average opponent: 1509record: 2-4 | new rating: 1465 | |||