Perez, Oscar
Current rating: 1561
Record: 9-6
| Grand Prix Barcelona 2019 (modern) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 325 | Urbizu, Alexandre (1500) | Won 2-0 | +171534 |
| 2modern | 38 | Sarac, Marko (1560) | Lost 1-2 | -171517 |
| 3modern | 488 | Ishizaka, Akira (1689) | Won 2-1 | +211538 |
| 4modern | 448 | Williams, Gareth (1488) | Won 2-0 | +171555 |
| 5modern | 205 | Schlegel, Michael (1755) | Lost 1-2 | -141541 |
| 6modern | 275 | Alvarez De Eulate Urra, Ander (1645) | Won 2-1 | +201561 |
| 7modern | 164 | Leloudas, Giannis (1546) | Won 2-1 | +171578 |
| 8modern | 143 | Moser, Christoph (1628) | Lost 1-2 | -171561 |
| average opponent: 1601record: 5-3 | new rating: 1561 | |||
| Grand Prix Barcelona 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 145 | Pav, Anthony (1500) | Lost 1-2 | -181482 |
| 2modern | 488 | Torres Castello, David (1516) | Won 2-0 | +191501 |
| 3modern | 546 | Sintes Andres, Nicolas (1257) | Won 2-0 | +131514 |
| 4modern | 445 | Steinecke, Michael (1768) | Won 2-1 | +231537 |
| 5modern | 194 | Griebel, Joel (1527) | Lost 1-2 | -181519 |
| 6modern | 237 | Dohmen, David (1495) | Won 2-1 | +171536 |
| 7modern | 240 | Falcon, Antoni (1451) | Lost 0-2 | -191517 |
| average opponent: 1502record: 4-3 | new rating: 1517 | |||