Costa, Sergio [PRT]
Current rating: 1415
Record: 26-33-6
| Grand Prix Seville 2015 (FRF standard) | starting rating: 1420 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 28 | Pazos Vargas, Vicente (1500) | Lost 0-2 | -171403 |
| 2standard | 274 | Vooys, Kurt (1602) | Lost 1-2 | -141389 |
| 3standard | 352 | Cienfuegos Izquierdo, Ewan David (1464) | Lost 1-2 | -171372 |
| 4standard | 379 | Gomez Sanchez, Almudena (1444) | Won 2-0 | +201392 |
| 5standard | 343 | Montero Garzon, Francisco Javier (1420) | Won 2-0 | +181410 |
| 6standard | 272 | Aguiar, Sergio (1482) | Won 2-1 | +191429 |
| 7standard | 204 | McGregor, Craig (1425) | Lost 1-2 | -181411 |
| 8standard | 221 | Sanz, Lara (1461) | Won 2-0 | +191430 |
| 9standard | 164 | Collinet, Patrick (1589) | Lost 0-2 | -151415 |
| top | average opponent: 1487record: 4-5 | new rating: 1415 | ||
| Grand Prix Madrid 2014 (modern) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 239 | Lopez Garcia, Ivan (1674) | Lost 1-2 | -141452 |
| 2modern | 520 | Vilas, Samuel (1483) | Won 2-1 | +181470 |
| 3modern | 208 | Mathews, Thomas (1531) | Lost 0-2 | -171453 |
| 4modern | 723 | Castello, Javier (1532) | Lost 0-2 | -161437 |
| 5modern | 822 | Rielves, Alvaro (1463) | Lost 1-2 | -181419 |
| 6modern | 195 | Hernandez Jorda, (1450) | Draw 0-0 | +11420 |
| top | average opponent: 1522record: 1-4-1 | new rating: 1420 | ||
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 507 | Mesquita, Jorge (1500) | Lost 0-2 | -181504 |
| 2sealed | 751 | Collell, Oriol (1491) | Lost 0-2 | -191485 |
| 3sealed | 788 | Marques, Diogo (1451) | Lost 0-2 | -181467 |
| 4sealed | 826 | Fernandes, Joao (1430) | Won 1-0 | +171484 |
| 5sealed | 798 | Schwarz, Iris (1482) | Lost 0-2 | -181466 |
| top | average opponent: 1471record: 1-4 | new rating: 1466 | ||
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 530 | Santos, Nelson (1500) | Won 2-0 | +191485 |
| 2sealed | 310 | Rivero, David (1518) | Won 2-0 | +181503 |
| 3sealed | 29 | Padron Galindo, Luis (1538) | Won 2-0 | +191522 |
| 4sealed | 73 | Pereira, Pedro (1507) | Won 2-0 | +181540 |
| 5sealed | 25 | Marrero Negrin, Jaime (1591) | Lost 0-2 | -171523 |
| 6sealed | 62 | Madrigal, Jose Luis (1475) | Lost 1-2 | -191504 |
| 7sealed | 190 | Moreno, Eduardo A (1521) | Won 2-1 | +181522 |
| top | average opponent: 1521record: 5-2 | new rating: 1522 | ||
| Grand Prix Lyon 2003 (MRD limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Ciccia, Adrien (1500) | Won 2-0 | +201455 |
| 2sealed | 163 | Fenet, Camille (1669) | Lost 1-2 | -151440 |
| 3sealed | 230 | Morin, Dimitri (1451) | Won 2-0 | +191459 |
| 4sealed | 226 | Gavilan, Michael (1504) | Won 2-0 | +181477 |
| 5sealed | 88 | Selhuber, Andreas (1535) | Lost 0-2 | -171460 |
| 6sealed | 199 | Gauthier, Sebastien (1524) | Won 2-0 | +201480 |
| 7sealed | 104 | Vystejn, Jiri (1586) | Lost 0-2 | -161464 |
| 8sealed | 146 | Ballivet, Louis (1550) | Lost 1-2 | -171447 |
| 9sealed | 171 | Frecaut, Sebastien (1500) | Won 2-1 | +191466 |
| top | average opponent: 1536record: 5-4 | new rating: 1466 | ||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 53 | Villacanas Garrudo, Jesus (1500) | Won 2-0 | +191465 |
| 2sealed | 176 | Malheiro, Rui (1518) | Lost 0-2 | -171448 |
| 3sealed | 249 | Garcia, Enrique (1455) | Draw 1-1 | 01448 |
| 4sealed | 235 | Carrusca, Joao (1500) | Lost 0-2 | -171431 |
| 5sealed | 274 | Gandara Alonso, Carlos (1553) | Won 2-1 | +201451 |
| 6sealed | 202 | Ogando, Jose (1483) | Won 2-1 | +191470 |
| 7sealed | 137 | Marques Moreno, Hugo (1518) | Lost 0-2 | -181452 |
| 8sealed | 154 | Fernandez, Rafael (1501) | Lost 0-2 | -171435 |
| top | average opponent: 1504record: 3-4-1 | new rating: 1435 | ||
| Grand Prix London 2002 (Odyssey block) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 11 | Davis, Tomas (1500) | Lost 0-2 | -181484 |
| 2block | 248 | Kammel, Rudolf (1464) | Won 2-1 | +181502 |
| 3block | 225 | Wilson, Lee (1499) | Lost 0-2 | -181484 |
| 4block | 225 | Tucker, Matthew (1450) | Lost 0-2 | -191465 |
| 5block | 243 | Engelbert, Peter (1464) | Won 2-0 | +181483 |
| 6block | 200 | Logeat, Alan (1486) | Draw 1-1 | 01483 |
| 7block | 152 | Grange, Loan (1483) | Lost 1-2 | -181465 |
| 8block | 133 | Baierhofer, Horst (1371) | Lost 0-2 | -191446 |
| top | average opponent: 1465record: 2-5-1 | new rating: 1446 | ||
| Grand Prix Lisbon 2002 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 118 | Fonseca, Marco (1464) | Won 2-0 | +181500 |
| 2extended | 121 | Guimaraes, Pedro (1518) | Won 2-1 | +181518 |
| 3extended | 63 | Coelho, Helder (1615) | Lost 0-2 | -161502 |
| 4extended | 157 | Fernandez, Guillermo (1518) | Won 2-0 | +181520 |
| 5extended | 53 | Misonne, Jacques (1519) | Draw 1-1 | 01520 |
| 6extended | 88 | Canavesi, Emanuele (1519) | Lost 1-2 | -181502 |
| 7extended | 131 | Oliveira, Sonia (1544) | Lost 0-2 | -171485 |
| 8extended | 154 | Pina, Nilton (1470) | Won 2-1 | +171502 |
| top | average opponent: 1521record: 4-3-1 | new rating: 1502 | ||
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Cardoso, Gustavo (1500) | Draw 1-1 | 01500 |
| 2sealed | 177 | Marques Correia, Miguel (1500) | Draw 1-1 | 01500 |
| 3sealed | 231 | Soares, Paulo (1500) | Lost 0-2 | -181482 |
| 4sealed | 267 | Pinto, Carlos (1482) | Won 0-0 | +181500 |
| 5sealed | 199 | Rua, Francisco (1499) | Lost 0-2 | -181482 |
| top | average opponent: 1496record: 1-2-2 | new rating: 1482 | ||