Piggott, Jonathan
Current rating: 1507
Record: 24-28-2
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 204 | Pendergast, Andrew (1500) | Lost 1-2 | -171419 |
| 2standard | 251 | Koontz, Chris (1483) | Draw 1-1 | +11420 |
| 3standard | 388 | Newman, D.J. (1487) | Won 2-0 | +191439 |
| 4standard | 320 | Hall, Michael 2539 (1430) | Won 2-1 | +181457 |
| 5standard | 229 | Hlafcsak, Pat (1516) | Won 2-0 | +191476 |
| 6standard | 145 | Fenstermaker, Dean (1679) | Won 2-0 | +221498 |
| 7standard | 88 | Guzzi, Anthony (1523) | Won 2-0 | +181516 |
| 8standard | 54 | Fabiano, Gerard (2018) | Lost 1-2 | -91507 |
| top | average opponent: 1580record: 5-2-1 | new rating: 1507 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 457 | Gerowe, Spencer (1500) | Won 2-0 | +201430 |
| 2standard | 106 | Bachman, Brian (1501) | Won 2-0 | +191449 |
| 3standard | 63 | Martini, Matthew (1518) | Won 2-0 | +191468 |
| 4standard | 149 | Zhu, Yuxuan (1623) | Lost 0-2 | -151453 |
| 5standard | 234 | Rubin, Alex (1480) | Won 2-1 | +181471 |
| 6standard | 216 | Pratt, Phil (1533) | Won 2-0 | +201491 |
| 7standard | 90 | Ragan, Benjamin (1578) | Lost 1-2 | -171474 |
| 8standard | 236 | Housman, Myles (1689) | Lost 1-2 | -141460 |
| 9standard | 180 | Strianese, Michael (1527) | Won 2-0 | +191479 |
| 10standard | 178 | Bonamico, Jared (1531) | Lost 1-2 | -171462 |
| 11standard | 221 | Goanos, Johnathan (1562) | Lost 1-2 | -161446 |
| 12standard | 37 | Ashton, Thomas (1891) | Lost 0-2 | -101436 |
| top | average opponent: 1578record: 6-6 | new rating: 1436 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1423 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 315 | Bryant, James (1540) | Won 2-0 | +201443 |
| 2sealed | 306 | Magararu, Juris (1373) | Lost 1-2 | -191424 |
| 3sealed | 405 | Johnson, Angelique (1635) | Lost 1-2 | -141410 |
| top | average opponent: 1516record: 1-2 | new rating: 1410 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1386 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 153 | Fischer, Benjamin (1538) | Won 2-0 | +211407 |
| 2standard | 288 | Jaques, Jordan (1485) | Won 2-0 | +191426 |
| 3standard | 303 | Hyler, Nicholas (1636) | Won 2-0 | +221448 |
| 4standard | 11 | Chen, Gregory (1696) | Lost 0-2 | -141434 |
| 5standard | 324 | Reilly, Paul (1491) | Won 2-1 | +191453 |
| 6standard | 95 | Beniamino, David (1500) | Lost 0-2 | -171436 |
| 7standard | 196 | Nalesnik, Kris (1559) | Lost 0-2 | -161420 |
| 8standard | 358 | Ciaffone, Sal (1524) | Lost 0-2 | -161404 |
| 9standard | 415 | Kibbe, Josh (1457) | Won 2-0 | +191423 |
| top | average opponent: 1543record: 5-4 | new rating: 1423 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 276 | Breslin, David (1589) | Lost 1-2 | -151422 |
| 2standard | 289 | Erb, Paul (1483) | Lost 0-2 | -171405 |
| 3standard | 629 | Wible, Mike (1363) | Lost 1-2 | -191386 |
| top | average opponent: 1479record: 0-3 | new rating: 1386 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 262 | Bartz, Kevin (1479) | Lost 1-2 | -191472 |
| 2modern | 653 | Muftic, Max (1490) | Lost 0-2 | -171455 |
| 3modern | 936 | Tumavich, Jim (1462) | Lost 0-2 | -181437 |
| top | average opponent: 1477record: 0-3 | new rating: 1437 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 201 | Lau, Kevin (1463) | Won 2-0 | +171518 |
| 2standard | 100 | Trau, Jason (1518) | Won 2-0 | +181536 |
| 3standard | 164 | Ruston, Richard (1513) | Won 2-0 | +181554 |
| 4standard | 140 | Walsh, Brian (1550) | Won 2-0 | +181572 |
| 5standard | 50 | Kovac, Chase (1887) | Lost 0-2 | -131559 |
| 6standard | 98 | Houk, Stephen (1425) | Lost 1-2 | -201539 |
| 7standard | 218 | Snook, Adam (1728) | Lost 0-2 | -151524 |
| 8standard | 281 | Penning, Shawn (1524) | Lost 0-2 | -181506 |
| 9standard | 314 | Wiest, Hank (1631) | Lost 0-2 | -151491 |
| top | average opponent: 1582record: 4-5 | new rating: 1491 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 795 | Garfunkel, Andrew (1521) | Won 2-1 | +181518 |
| 2modern | 499 | McLaughlin, Justin (1465) | Won 2-0 | +171535 |
| 3modern | 144 | Stokes, Richard (1535) | Draw 1-1 | 01535 |
| 4modern | 281 | Kregger, Darren (1558) | Won 2-0 | +191554 |
| 5modern | 139 | Gostek, Ryan (1618) | Lost 0-2 | -171537 |
| 6modern | 321 | Ortlieb, Alex (1541) | Lost 0-2 | -181519 |
| 7modern | 534 | Melville, Joseph (1519) | Lost 0-2 | -181501 |
| top | average opponent: 1537record: 3-3-1 | new rating: 1501 | ||