Dudley, Robert
Current rating: 1514
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 161 | Scarborough, Joshua (1500) | Won 2-1 | +171554 |
| 2extended | 133 | De La Rosa, Eddy (1459) | Lost 0-2 | -201534 |
| 3extended | 276 | Dembinski, Kyle (1470) | Lost 0-2 | -191515 |
| 4extended | 349 | Hamblet, Eli (1485) | Lost 0-2 | -181497 |
| 5extended | 378 | Swigart, Tyson T (1448) | Won 2-0 | +171514 |
| top | average opponent: 1472record: 2-3 | new rating: 1514 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 137 | Long, Todd (1500) | Draw 1-1 | 01520 |
| 2sealed | 142 | Conner, David (1501) | Won 2-0 | +171537 |
| 3sealed | 85 | Edmond, Scott (1518) | Won 2-1 | +181555 |
| 4sealed | 71 | Kastel, Chad (1572) | Won 2-0 | +181573 |
| 5sealed | 37 | Beverley, Robert (1628) | Lost 0-2 | -171556 |
| 6sealed | 81 | Ferneyhough, Michael (1477) | Lost 1-2 | -191537 |
| top | average opponent: 1533record: 3-2-1 | new rating: 1537 | ||
| Grand Prix Minneapolis 2005 (Kamigawa block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 129 | Kowal, Brian (1557) | Won 2-1 | +191519 |
| 2block | 97 | McAlpine, Ken (1551) | Lost 1-2 | -171502 |
| 3block | 105 | Berhow, Jerad (1500) | Won 2-1 | +181520 |
| 4block | 80 | Ashkar, Ben (1538) | Won 2-0 | +181538 |
| 5block | 76 | Runger, John (1480) | Won 2-1 | +171555 |
| 6block | 32 | Beeton, James (1615) | Lost 0-2 | -171538 |
| 7block | 47 | Foster, Jake (1536) | Lost 0-2 | -181520 |
| top | average opponent: 1539record: 4-3 | new rating: 1520 | ||