Perkins, Joe
Current rating: 1481
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 201 | Conwell, Sean (1500) | Lost 1-2 | -191518 |
| 2modern | 340 | Courtois, Andre (1480) | Lost 0-2 | -191499 |
| 3modern | 400 | Carolin, Aaron (1466) | Won 2-0 | +181517 |
| 4modern | 330 | Moore, Adam (1561) | Lost 0-2 | -181499 |
| 5modern | 386 | Morely, Anthony (1464) | Lost 1-2 | -181481 |
| top | average opponent: 1494record: 1-4 | new rating: 1481 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 105 | Keller, Michael (1388) | Lost 1-2 | -191461 |
| 2standard | 445 | Sheppard, Jacob (1466) | Won 2-0 | +181479 |
| 3standard | 402 | Morales, Alejandro (1500) | Lost 0-2 | -181461 |
| 4standard | 480 | Miland, Scott (1464) | Won 2-1 | +181479 |
| 5standard | 435 | Katine, Josh (1516) | Won 2-1 | +191498 |
| 6standard | 259 | Castro, Robert (1627) | Won 2-1 | +201518 |
| 7standard | 254 | Broad, Adam (1489) | Won 2-0 | +181536 |
| 8standard | 149 | Wilder Jr, Kenneth L (1562) | Lost 1-2 | -181518 |
| 9standard | 135 | Odenheimer, Nicholas (1538) | Won 2-1 | +191537 |
| top | average opponent: 1505record: 6-3 | new rating: 1537 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 441 | Cholewa, Jimmy (1484) | Lost 1-2 | -181482 |
| 2extended | 588 | Amburgey, Brad (1447) | Lost 1-2 | -191463 |
| 3extended | 617 | Downing, Ian (1450) | Won 2-0 | +181481 |
| 4extended | 639 | Baggs, Thor (1465) | Lost 1-2 | -181463 |
| 5extended | 642 | Herron, Andrew (1466) | Won 2-1 | +181481 |
| 6extended | 590 | Burke, Dane (1481) | Lost 1-2 | -181463 |
| 7extended | 566 | Abbott, Chris (1466) | Won 2-0 | +181481 |
| 8extended | 524 | Throop, Adrian (1466) | Lost 0-2 | -191462 |
| 9extended | 493 | Shackelford, Christoph (1464) | Won 2-0 | +181480 |
| top | average opponent: 1465record: 4-5 | new rating: 1480 | ||