Holding, Colin
Current rating: 1452
Record: 3-6
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Pettifer, Philip (1630) | Lost 0-2 | -151450 |
| 2sealed | 170 | Dziedziel, Szymon (1481) | Lost 1-2 | -171433 |
| 3sealed | 188 | Steelyard, Matthew (1463) | Won 2-0 | +181451 |
| 4sealed | 228 | Pierce, Declan (1484) | Lost 0-2 | -171434 |
| 5sealed | 204 | Retourne, Amelien (1428) | Won 2-0 | +181452 |
| average opponent: 1497record: 2-3 | new rating: 1452 | |||
| Grand Prix Nottingham 2005 (RAV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Pollack, Frank (1455) | Lost 0-2 | -191481 |
| 2sealed | 183 | Jefferies, Alan (1523) | Lost 1-2 | -171464 |
| 3sealed | 234 | Su, Michael (1525) | Won 2-1 | +191483 |
| 4sealed | 228 | Davies, Gareth (1482) | Lost 0-2 | -181465 |
| average opponent: 1496record: 1-3 | new rating: 1465 | |||