D'Errico, Davide
Current rating: 1469
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 55 | noirhomme, thomas (1500) | Lost 0-2 | -181448 |
| 2extended | 357 | Bronsgeest, Pieter (1482) | Won 2-0 | +191467 |
| 3extended | 295 | Detmers, Rob (1499) | Lost 0-1 | -171450 |
| 4extended | 370 | Stolwijk, Gertjan (1485) | Won 2-0 | +181468 |
| 5extended | 272 | van Voorst, Kasper (1503) | Won 2-1 | +191487 |
| 6extended | 163 | Skounakis, Kostas (1509) | Lost 0-2 | -181469 |
| top | average opponent: 1496record: 3-3 | new rating: 1469 | ||
| Grand Prix Paris 2004 (COK limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Sader, Andre (1492) | Lost 0-2 | -181464 |
| 2sealed | 308 | Babelot, Alexandre (1482) | Won 2-0 | +181482 |
| 3sealed | 180 | Bering, Juergen (1538) | Lost 0-1 | -171465 |
| 4sealed | 277 | Blaise, Cedric (1481) | Lost 0-2 | -171448 |
| 5sealed | 295 | Serinelli, Mathias (1464) | Won 2-0 | +181466 |
| top | average opponent: 1491record: 2-3 | new rating: 1466 | ||
| Grand Prix Genoa 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 7 | Chevallier, Michel (1500) | Won 2-0 | +181518 |
| 2block | 72 | Conti, Luca (1517) | Won 2-1 | +181536 |
| 3block | 31 | Cammilluzzi, Marco (1537) | Won 2-1 | +181554 |
| 4block | 52 | Krebs, Markus (1553) | Lost 1-2 | -181536 |
| 5block | 88 | Blanco, David (1515) | Lost 0-2 | -181518 |
| 6block | 153 | Vix, Regis (1532) | Lost 1-2 | -181500 |
| 7block | 147 | Nesi, Eugenio (1488) | Lost 0-2 | -181482 |
| top | average opponent: 1520record: 3-4 | new rating: 1482 | ||