Purdy, Andrew
Current rating: 1434
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 86 | Kikes, Sam (1533) | Won 2-1 | +191482 |
| 2standard | 70 | Miller, Jessica (1523) | Lost 0-2 | -171465 |
| 3standard | 612 | McGraw, Matthew (1661) | Lost 0-2 | -151450 |
| 4standard | 669 | Webster, Marques (1523) | Lost 0-2 | -161434 |
| top | average opponent: 1560record: 1-3 | new rating: 1434 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 279 | Rainbolt, John (1482) | Lost 0-2 | -181446 |
| 2standard | 378 | Taylor, Michael (1325) | Won 2-1 | +161462 |
| 3standard | 360 | Turner, Albert (1500) | Won 2-1 | +191481 |
| 4standard | 142 | Park, Paige (1490) | Lost 0-2 | -181463 |
| 5standard | 411 | Dow, Erica (1420) | Won 2-0 | +171480 |
| 6standard | 195 | Cox, Rodney (1516) | Lost 0-2 | -171463 |
| top | average opponent: 1455record: 3-3 | new rating: 1463 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Turek, Leslie (1501) | Lost 0-2 | -181482 |
| 2sealed | 194 | Nash, David (1481) | Lost 0-2 | -181464 |
| top | average opponent: 1491record: 0-2 | new rating: 1464 | ||