Harrison, Jonathan
Current rating: 1440
Record: 23-29
| Grand Prix Baltimore 2014 (KTK limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 102 | Papayannakos, Chris (1470) | Won 2-1 | +191454 |
| 3sealed | 161 | Taylor, Graham (1522) | Won 2-1 | +191473 |
| 4sealed | 65 | Holten, Ted (1471) | Lost 0-2 | -181455 |
| 5sealed | 148 | Glancy, Ben (1471) | Won 2-0 | +181473 |
| 6sealed | 46 | Sledgeski, Gunner (1510) | Lost 1-2 | -171456 |
| 7sealed | 128 | Ott, Kyle (1558) | Lost 0-2 | -161440 |
| top | average opponent: 1500record: 3-3 | new rating: 1440 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 1466 | Ledy, Lawrence (1618) | Won 2-0 | +211467 |
| 3legacy | 1418 | Williams, Emmet (1537) | Won 2-1 | +201487 |
| 4legacy | 1468 | Wu, Michael (1518) | Lost 0-2 | -181469 |
| 5legacy | 1579 | Cotrupe, Matthew (1510) | Lost 1-2 | -171452 |
| 6legacy | 1596 | Byrd, Mark-Antony (1527) | Lost 1-2 | -171435 |
| top | average opponent: 1542record: 2-3 | new rating: 1435 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 151 | Cervino, Thomas (1467) | Won 2-1 | +181501 |
| 3sealed | 284 | Jones, Kevin (1517) | Lost 1-2 | -181483 |
| 4sealed | 395 | Sweeney, Jace (1435) | Lost 0-2 | -191464 |
| 5sealed | 582 | Richardson, Chris (1465) | Lost 0-2 | -181446 |
| top | average opponent: 1471record: 1-3 | new rating: 1446 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1062 | Harford, Clint (1481) | Won 2-1 | +191451 |
| 3modern | 1182 | Akpinar, Tim (1545) | Lost 1-2 | -171434 |
| 4modern | 1351 | Whang, Remus (1560) | Lost 0-2 | -151419 |
| 5modern | 1378 | Pruim, Thomas (1501) | Won 2-1 | +191438 |
| 6modern | 1285 | Bennett, Jonathan 194 (1500) | Won 2-1 | +191457 |
| 7modern | 1207 | Pirone, Nicholas (1520) | Won 2-0 | +191476 |
| 8modern | 1170 | Terhune, Brandon (1560) | Won 2-0 | +201496 |
| 9modern | 1058 | Frank, Harry (1473) | Won 2-1 | +171513 |
| 10modern | 171 | Holden, Zachary (1546) | Lost 0-2 | -171496 |
| 11modern | 156 | Rasmussen, Ron (1591) | Won 2-0 | +201516 |
| 12modern | 111 | Fons, Kevin (1548) | Lost 0-2 | -181498 |
| 13modern | 186 | Tubergen, Pieter (1650) | Lost 0-2 | -151483 |
| top | average opponent: 1540record: 7-5 | new rating: 1483 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 284 | Bradbury, Jesse (1578) | Lost 1-2 | -151430 |
| 2legacy | 478 | Miller, Gregory (1482) | Lost 1-2 | -171413 |
| 3legacy | 695 | Holbrook, Michael (1464) | Won 2-1 | +191432 |
| 4legacy | 745 | Carlin, Matthew (1364) | Won 2-1 | +161448 |
| 5legacy | 506 | Firebaugh, Jeremy (1515) | Lost 1-2 | -161432 |
| top | average opponent: 1481record: 2-3 | new rating: 1432 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 734 | Panzer, Murray (1502) | Lost 1-2 | -181436 |
| 3sealed | 813 | Clark, Shawn (1500) | Won 2-1 | +201456 |
| 4sealed | 651 | Downey, Patrick (1518) | Won 2-1 | +191475 |
| 5sealed | 653 | Hernandez, Chris P (1588) | Lost 1-2 | -161459 |
| 6sealed | 671 | Berger, Eric (1719) | Lost 0-2 | -141445 |
| top | average opponent: 1565record: 2-3 | new rating: 1445 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 346 | Kleppinger, David (1519) | Lost 1-2 | -181469 |
| 3standard | 509 | Rohena, Zaby (1502) | Won 2-1 | +191488 |
| 4standard | 451 | Simon, Cedric (1487) | Lost 0-2 | -181470 |
| 5standard | 414 | Patnode, Nicholas (1570) | Lost 0-2 | -161454 |
| top | average opponent: 1520record: 1-3 | new rating: 1454 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 844 | Thompson, Zach (1516) | Lost 1-2 | -171462 |
| 2standard | 871 | Costantini, Mark (1482) | Won 2-0 | +181480 |
| 3standard | 852 | Hash, William J (1500) | Won 2-0 | +191499 |
| 4standard | 820 | Avilu, Jon B (1518) | Won 2-0 | +181517 |
| 5standard | 685 | Viaene, Niels (1808) | Lost 1-2 | -131504 |
| 6standard | 752 | Powell, Logan (1517) | Lost 0-2 | -171487 |
| top | average opponent: 1557record: 3-3 | new rating: 1487 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Trahan, Sean (1446) | Lost 1-2 | -191481 |
| 2sealed | 249 | Jannen, Alec J (1482) | Lost 0-2 | -181463 |
| 3sealed | 307 | Dortman, Josh A (1464) | Won 2-0 | +181481 |
| 4sealed | 277 | Sund, Aerick (1482) | Won 2-0 | +181499 |
| 5sealed | 200 | Assiff, Spencer (1409) | Lost 0-2 | -201479 |
| top | average opponent: 1457record: 2-3 | new rating: 1479 | ||