Jefferies, Alan
Current rating: 1519
Record: 10-9
| Grand Prix Montreal 2007 (Time Spiral block) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 104 | Jones, Donny (1518) | Lost 0-2 | -191537 |
| 3block | 236 | Caron, Antoine (1500) | Lost 0-2 | -181519 |
| top | average opponent: 1509record: 0-2 | new rating: 1519 | ||
| Grand Prix Nottingham 2005 (RAV limited) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 135 | Stocking, Christopher (1563) | Lost 1-2 | -181523 |
| 2sealed | 183 | Holding, Colin (1481) | Won 2-1 | +181541 |
| 3sealed | 172 | Hauck, Peter (1554) | Won 2-1 | +181559 |
| 4sealed | 158 | Rayson, Mark (1437) | Won 2-1 | +161575 |
| 5sealed | 106 | Buksmann, Elena (1537) | Lost 1-2 | -191556 |
| top | average opponent: 1515record: 3-2 | new rating: 1556 | ||
| Grand Prix London 2002 (Odyssey block) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 26 | Conway, Andrew (1500) | Won 2-1 | +171538 |
| 2block | 102 | Swan, Martin (1504) | Won 2-1 | +181556 |
| 3block | 94 | Karlsson, Morgan (1804) | Won 2-0 | +221578 |
| 4block | 8 | Gulinski, Sebastian (1537) | Lost 0-2 | -191559 |
| 5block | 89 | Haberkorn, Pascal (1548) | Lost 0-2 | -181541 |
| top | average opponent: 1579record: 3-2 | new rating: 1541 | ||
| Grand Prix London 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 128 | Dokter, Jacob (1500) | Won 2-0 | +181518 |
| 2block | 69 | Gromko, Radoslaw (1692) | Lost 1-2 | -151503 |
| 3block | 104 | Reinecke, Caro (1464) | Won 2-0 | +171520 |
| 4block | 83 | Smith, Craig (1483) | Won 2-1 | +181538 |
| 5block | 61 | Siew, Beng Khoon (1535) | Won 2-0 | +181556 |
| 6block | 30 | Martin, Christian [FRA] (1556) | Lost 1-2 | -181538 |
| 7block | 88 | Harle, Thomas (1583) | Lost 0-2 | -171521 |
| top | average opponent: 1545record: 4-3 | new rating: 1521 | ||