da Maia, Ruben
Current rating: 1481
Record: 3-4-1
| Grand Prix Cardiff 2006 (GPT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Lawrence, Martin (1404) | Lost 0-1 | -201480 |
| 2sealed | 101 | Foulkes, Steve (1430) | Lost 0-0 | -191461 |
| 3sealed | 158 | Badran, Thomas A (1464) | Lost 1-2 | -181443 |
| 4sealed | 170 | Bartram, Crispin (1447) | Draw 1-1 | 01443 |
| 5sealed | 158 | Davy, Mike (1447) | Won 2-0 | +191462 |
| 6sealed | 134 | Warne, Barnaby (1464) | Won 2-0 | +181480 |
| 7sealed | 101 | Padbury, James (1572) | Lost 0-2 | -171463 |
| 8sealed | 94 | Rial, Katherine (1464) | Won 2-0 | +181481 |
| average opponent: 1462record: 3-4-1 | new rating: 1481 | |||