Marchall Tello, Sergio
Current rating: 1557
Record: 12-9
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 290 | Freitas, Buyolo (1518) | Lost 0-2 | -191581 |
| 3sealed | 263 | Llopis Martinez, Paco Francisco (1711) | Lost 1-2 | -161565 |
| 4sealed | 432 | Penalver, Francisco (1483) | Won 2-0 | +161581 |
| 5sealed | 362 | Martin Peral, Marcos (1517) | Lost 0-2 | -191562 |
| 6sealed | 349 | Diestro Maldonado, Jose Manuel (1470) | Lost 0-2 | -191543 |
| 7sealed | 332 | Fonseca, Hugo (1464) | Won 2-0 | +161559 |
| 8sealed | 265 | Serrano Arroyo, Antonio (1536) | Lost 0-2 | -181541 |
| 9sealed | 193 | Sarabia Velasco, Jorge (1462) | Won 2-1 | +161557 |
| average opponent: 1520record: 3-5 | new rating: 1557 | |||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 249 | Soler Salazar, Jose Ramon (1451) | Won 2-0 | +171517 |
| 2sealed | 96 | Sequeira, Ricardo (1596) | Lost 0-2 | -161501 |
| 3sealed | 286 | Campo Diez, Javier (1503) | Won 2-1 | +181519 |
| 4sealed | 155 | Iglesias Puigdengolas, Marc (1490) | Won 2-1 | +171536 |
| 5sealed | 113 | Rodrigo, Alberto Biaz (1536) | Won 2-0 | +181554 |
| 6sealed | 67 | Cid Fernandez, Daniel (1606) | Won 2-0 | +191573 |
| 7sealed | 22 | Bailadeira, Pedro (1664) | Won 2-0 | +201593 |
| 8sealed | 7 | Dobry, Benjamin (1634) | ID | 01593 |
| 9draft | 14 | Dobry, Benjamin (1634) | Won 2-1 | +181611 |
| 10draft | 15 | Galbany, Jordi (1577) | Lost 0-2 | -181593 |
| 11draft | 19 | Martin, Pablo 0617 (1593) | Lost 0-2 | -181575 |
| 12draft | 10 | Larena, Daniel (1583) | Won 2-1 | +181593 |
| 13draft | 19 | Budde, Kai (2192) | Lost 0-2 | -81585 |
| 14draft | 7 | Hernandez, Gines (1434) | Won 2-0 | +151600 |
| average opponent: 1607record: 9-4-1 | new rating: 1600 | |||