Harkin, Sean
Current rating: 1443
Record: 10-15
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 298 | Flynn, Edward (1655) | Lost 0-2 | -141432 |
| 2standard | 341 | Rhoades, Jessee (1481) | Won 2-0 | +191451 |
| 3standard | 308 | Swantz, Austin (1704) | Won 2-0 | +221473 |
| 4standard | 271 | Snyder, Asa (1700) | Lost 0-2 | -131460 |
| 5standard | 313 | Yarborough, Kyle (1514) | Lost 0-2 | -171443 |
| top | average opponent: 1611record: 2-3 | new rating: 1443 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 642 | Cantrell, Carl (1514) | Lost 1-2 | -171456 |
| 2sealed | 895 | Sullivan, Craig (1448) | Won 2-1 | +181474 |
| 3sealed | 982 | Marsh, Jonathan (1669) | Lost 1-2 | -141460 |
| 4sealed | 1056 | Longo, Andrew (1729) | Lost 1-2 | -141446 |
| top | average opponent: 1590record: 1-3 | new rating: 1446 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 231 | Ando, Michael (1655) | Won 2-0 | +221488 |
| 3sealed | 122 | Caffrey, Corey (1504) | Lost 0-2 | -181470 |
| 4sealed | 303 | Cruz, Eric (1457) | Lost 1-2 | -181452 |
| 5sealed | 334 | Versteeg, Carl (1590) | Won 2-0 | +201472 |
| 6sealed | 257 | Diko, Luis (1517) | Won 2-0 | +191491 |
| 7sealed | 98 | Tankus, Nathan (1516) | Lost 1-2 | -181473 |
| top | average opponent: 1540record: 3-3 | new rating: 1473 | ||
| Grand Prix Washington DC 2014 (JOU limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 153 | Collins, Scott (1410) | Lost 0-2 | -191443 |
| 2sealed | 518 | Murphy, Dan (1549) | Won 2-0 | +201463 |
| 3sealed | 493 | MacDonald, Beth (1503) | Won 2-0 | +191482 |
| 4sealed | 301 | Nehlsen, William (1545) | Lost 0-2 | -171465 |
| 5sealed | 496 | Mickel, Freddy (1561) | Won 2-1 | +201485 |
| 6sealed | 340 | Tillotson, Kenneth (1441) | Lost 1-2 | -191466 |
| top | average opponent: 1501record: 3-3 | new rating: 1466 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 174 | Alvarez, Andy (1500) | Won 2-0 | +181518 |
| 2standard | 33 | Bowen, Quinten (1517) | Lost 1-2 | -181500 |
| 3standard | 320 | Baker, John (1448) | Lost 1-2 | -191481 |
| 4standard | 548 | Azerad, Maury (1446) | Lost 0-2 | -191462 |
| top | average opponent: 1478record: 1-3 | new rating: 1462 | ||