Herrero, Guillermo
Current rating: 1403
| Grand Prix Prague 2016 (legacy) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 445 | Patrick, Rush (1500) | Won 2-1 | +201429 |
| 2legacy | 141 | Kolbl, Christian (1518) | Won 2-0 | +191448 |
| 3legacy | 58 | Petrushchenko, Sergey (1564) | Lost 0-2 | -161432 |
| 4legacy | 310 | Risch, Jonas (1393) | Won 2-0 | +181450 |
| 5legacy | 299 | Pane, Alexandre (1432) | Won 2-0 | +171467 |
| 6legacy | 183 | Genieis, Nicolas (1627) | Lost 1-2 | -151452 |
| 7legacy | 265 | Zurria, Mario (1478) | Lost 1-2 | -171435 |
| 8legacy | 341 | Hehn, Thore (1608) | Lost 0-2 | -151420 |
| 9legacy | 340 | Naismith-Robertson, Rowan (1501) | Lost 0-2 | -171403 |
| top | average opponent: 1513record: 4-5 | new rating: 1403 | ||
| Grand Prix Madrid 2010 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 779 | Frisk, Morten K (1412) | Won 2-0 | +171481 |
| 2legacy | 789 | Wagner, Stefan (1410) | Lost 0-2 | -191462 |
| 3legacy | 949 | Galera, Angel A. (1466) | Lost 0-2 | -181444 |
| 4legacy | 1089 | Garcia Alonso, Jose Luis (1480) | Lost 1-2 | -181426 |
| 5legacy | 1167 | Fraiz Ares, Lois (1460) | Lost 0-2 | -171409 |
| top | average opponent: 1445record: 1-4 | new rating: 1409 | ||
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Casado, Juan (1500) | Lost 0-2 | -181482 |
| 2sealed | 538 | Sicilia Senovella, Carlos (1482) | Lost 0-2 | -181464 |
| 3sealed | 540 | Mahillo Miranda, Jose Felix (1464) | Lost 0-2 | -181446 |
| 4sealed | 576 | Moreno, Miguel (1446) | Won 2-1 | +181464 |
| top | average opponent: 1473record: 1-3 | new rating: 1464 | ||