Harmon, Joshua
Current rating: 1456
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Mears, Jordon (1500) | Draw 1-1 | 01489 |
| 2sealed | 206 | Wallace, Michael (1587) | Lost 1-2 | -161473 |
| 3sealed | 370 | Nguyen, Tuyen (1539) | Lost 0-2 | -171456 |
| top | average opponent: 1542record: 0-2-1 | new rating: 1456 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 188 | Blodgett, Alexander (1500) | Won 2-1 | +181520 |
| 2modern | 384 | DeLeon, Jeremiah (1518) | Lost 0-2 | -181502 |
| 3modern | 494 | ICE, Daniel (1500) | Lost 0-2 | -181484 |
| 4modern | 797 | Palmer, David (1569) | Won 2-0 | +191503 |
| 5modern | 615 | McCullough, Hunter (1491) | Lost 1-2 | -181485 |
| 6modern | 712 | Phillips, Joshua 2202 (1479) | Won 2-0 | +181503 |
| 7modern | 566 | Van Cleave, Trey (1694) | Lost 1-2 | -141489 |
| top | average opponent: 1536record: 3-4 | new rating: 1489 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 400 | Polanco, Jorge (1500) | Lost 0-2 | -181482 |
| 2standard | 716 | Arensman, Dennis (1483) | Won 2-1 | +181500 |
| 3standard | 650 | Hollon, Jimmy (1499) | Won 2-0 | +181518 |
| 4standard | 519 | Montes, Ray (1579) | Lost 1-2 | -171501 |
| 5standard | 495 | Barr, Matthew (1498) | Won 2-0 | +181519 |
| 6standard | 410 | Fernandez, Rudy (1580) | Won 2-1 | +191538 |
| 7standard | 325 | Amaro, Eduardo (1533) | Lost 1-2 | -181520 |
| 8standard | 424 | Estrada, Cory (1516) | Lost 1-2 | -181502 |
| top | average opponent: 1523record: 4-4 | new rating: 1502 | ||