Johnsey, David
Current rating: 1525
Record: 6-5-1
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Christian, William (1482) | Won 2-0 | +181502 |
| 2sealed | 68 | suhl, donald r (1518) | Won 2-0 | +191521 |
| 3sealed | 118 | Ong, Nick (1595) | Lost 0-2 | -171504 |
| 4sealed | 125 | Roberts, Rob (1445) | Won 2-0 | +171521 |
| 5sealed | 90 | Cantrell, Carl (1503) | Draw 1-1 | 01521 |
| 6sealed | 126 | De Michele, David (1518) | Won 2-1 | +181539 |
| 7sealed | 79 | Thieleman, Eric (1559) | Won 2-0 | +181557 |
| 8sealed | 46 | Lapinski, Michael N (1547) | Lost 1-2 | -181539 |
| 9sealed | 90 | Buckingham, James (1785) | Lost 1-2 | -141525 |
| average opponent: 1550record: 5-3-1 | new rating: 1525 | |||
| Grand Prix Houston 2002 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Resendez, Festus (1500) | Won 2-0 | +181518 |
| 2extended | 31 | Willoughby, Tom (1649) | Lost 1-2 | -161502 |
| 3extended | 88 | Reimund, Shawn (1506) | Lost 1-2 | -181484 |
| average opponent: 1552record: 1-2 | new rating: 1484 | |||