Maestro San Juan, Mario David
Current rating: 1555
Record: 18-16
| Grand Prix Madrid 2010 (legacy) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 794 | Geurts, Steven (1500) | Won 2-1 | +181519 |
| 2legacy | 749 | Savs, Matej (1538) | Lost 0-2 | -171502 |
| 3legacy | 960 | Isupov, Alexey (1500) | Lost 0-2 | -181484 |
| 4legacy | 1149 | Samuelsson, David (1480) | Won 2-1 | +171501 |
| 5legacy | 1035 | Herrero, Ignacio (1502) | Won 2-0 | +181519 |
| 6legacy | 949 | Nabers, Patrick (1474) | Won 2-1 | +181537 |
| 7legacy | 859 | Palomero Jimenez, Antonio Jesus (1548) | Won 2-0 | +181555 |
| 8legacy | 816 | Montoto, Javier (1551) | Won 2-0 | +181573 |
| 9legacy | 826 | Bouvier, Patrick (1602) | Lost 1-2 | -181555 |
| top | average opponent: 1522record: 6-3 | new rating: 1555 | ||
| Grand Prix Madrid 2008 (EVE limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Sanchez, Carlos (1632) | Lost 0-2 | -171521 |
| 2sealed | 299 | Garcia, Jorge [ESP] (1446) | Won 2-1 | +171538 |
| 3sealed | 235 | Ruiz, Carlos [ESP] (1502) | Lost 0-2 | -191519 |
| 4sealed | 276 | Barry, Olivier (1584) | Lost 1-2 | -161503 |
| 5sealed | 277 | Vila, Ruben (1464) | Won 2-0 | +171520 |
| 6sealed | 222 | Cazorla, Francisco (1484) | Lost 0-2 | -191501 |
| top | average opponent: 1519record: 2-4 | new rating: 1501 | ||
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 18 | Mira, Samuel (1499) | Won 2-0 | +171540 |
| 5sealed | 41 | Franco, Jorge (1574) | Lost 0-2 | -171523 |
| 6sealed | 130 | Jimenez Rubio, Luis (1553) | Lost 0-2 | -171506 |
| 7sealed | 111 | Sureda, Miguel (1535) | Won 2-1 | +181524 |
| 8sealed | 78 | Sequeira, Ricardo (1511) | Won 2-0 | +181542 |
| 9sealed | 74 | Brusca Abos, Jordi (1595) | Won 2-1 | +191561 |
| 10draft | 42 | Diaz Marquez, Jordan (1641) | Won 2-0 | +191580 |
| 11draft | 40 | Budde, Kai (2039) | Lost 0-2 | -101570 |
| 12draft | 22 | Tenorio Zarco, Oscar (1530) | Lost 1-2 | -191551 |
| 13draft | 35 | Loeb, Davy (1699) | Lost 0-2 | -151536 |
| 14draft | 31 | Flicker, Andreas (1578) | Won 2-1 | +191555 |
| 15draft | 43 | Oliveira, Marino (1600) | Lost 0-2 | -171538 |
| top | average opponent: 1613record: 6-6 | new rating: 1538 | ||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 192 | Pereira, David (1620) | Won 2-0 | +201520 |
| 2sealed | 178 | Echague, Eduardo (1571) | Lost 1-2 | -171503 |
| 3sealed | 291 | Braga, Alexandre (1663) | Won 2-0 | +211524 |
| 4sealed | 98 | Rodrigo, Alberto Biaz (1518) | Lost 1-2 | -181506 |
| 5sealed | 164 | Picanol, Roma (1465) | Won 2-1 | +171523 |
| 6sealed | 115 | Diez Muller, Cristian (1515) | Won 2-0 | +181541 |
| 7sealed | 108 | Martins, Jose (1535) | Lost 0-2 | -181523 |
| top | average opponent: 1555record: 4-3 | new rating: 1523 | ||