Perez, Mariano
Current rating: 1521
| Grand Prix Madrid 2008 (EVE limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 172 | Colondrea, Daniel Rodrigo (1500) | Won 2-1 | +171557 |
| 2sealed | 135 | Garcia Gonzalez, Sergio (1520) | Lost 1-2 | -181539 |
| 3sealed | 164 | Santiago, Ricardo (1536) | Lost 0-2 | -181521 |
| top | average opponent: 1518record: 1-2 | new rating: 1521 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Dimitrov, Daniel (1479) | Draw 1-1 | -21539 |
| 2sealed | 189 | Casamitjana, Tony (1463) | Won 2-0 | +171556 |
| 3sealed | 113 | Wijker, Joeri (1518) | Won 2-0 | +171573 |
| 4sealed | 96 | Vavra, Nikola (1611) | Won 2-1 | +191592 |
| 5sealed | 51 | Sinner, Denis (1487) | Lost 0-2 | -201572 |
| 6sealed | 108 | Marco, David (1491) | Won 2-1 | +171589 |
| 7sealed | 69 | Nelson, Helge (1814) | Lost 0-2 | -141575 |
| 8sealed | 100 | Steinheuer, Martin (1539) | Lost 0-2 | -191556 |
| 9sealed | 93 | Darnhofer, Robert (1664) | Lost 1-2 | -161540 |
| top | average opponent: 1563record: 4-4-1 | new rating: 1540 | ||
| Grand Prix St. Louis 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Augustine, Michael (1500) | Won 2-1 | +181518 |
| 2sealed | 72 | Shiels, David (1672) | Won 2-1 | +211539 |
| 3sealed | 26 | Pekios, Andrew C (1537) | Won 2-1 | +181557 |
| 4sealed | 25 | Markeson, Scott (1606) | Lost 0-2 | -171540 |
| 5sealed | 72 | Zoz, Ben (1553) | Lost 0-2 | -181522 |
| 6sealed | 86 | Scherer, Caleb (1566) | Won 2-0 | +191541 |
| 7sealed | 68 | German, Eric B (1543) | Won 2-0 | +181559 |
| 8sealed | 46 | Wright, James P (1548) | Lost 1-2 | -181541 |
| top | average opponent: 1566record: 5-3 | new rating: 1541 | ||