Donlan, Jacob
Current rating: 1502
Record: 4-4
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Sorel, Derek (1523) | Lost 1-2 | -181482 |
| 2sealed | 220 | Porter, Joseph (1482) | Won 2-1 | +181500 |
| 3sealed | 286 | Hyden, Paul (1526) | Lost 1-2 | -171483 |
| 4sealed | 302 | Svetlov, Archie S (1468) | Won 2-1 | +181501 |
| 5sealed | 236 | Conyers, Melvin (1481) | Won 2-0 | +171518 |
| 6sealed | 182 | Acheson, Mark (1642) | Lost 0-2 | -161502 |
| 7sealed | 201 | Irwin, Russell (1454) | Won 2-1 | +181520 |
| 8sealed | 138 | Gonzalez, Adam (1522) | Lost 1-2 | -181502 |
| average opponent: 1512record: 4-4 | new rating: 1502 | |||