Harper, William
Current rating: 1442
Record: 6-10
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 312 | Feehan, Corey (1667) | Lost 1-2 | -141439 |
| 2modern | 473 | Perkins, James (1387) | Won 2-1 | +171456 |
| 3modern | 407 | Davis, Dylan (1520) | Won 2-1 | +191475 |
| 4modern | 272 | Bruno, David (1705) | Lost 1-2 | -141461 |
| 5modern | 378 | Stapert, Jeff (1423) | Lost 0-2 | -191442 |
| top | average opponent: 1540record: 2-3 | new rating: 1442 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 251 | Darrouzet, Stephen (1520) | Won 2-1 | +191499 |
| 3modern | 347 | Coutinho, Marcelo (1641) | Lost 0-2 | -151484 |
| 4modern | 476 | Stolle, Ben (1485) | Lost 0-2 | -181466 |
| 5modern | 732 | Adinolfi, Vincent (1741) | Won 2-0 | +231489 |
| 6modern | 451 | Ng, Derek (1519) | Lost 0-2 | -181471 |
| 7modern | 442 | Beam, Seth (1449) | Lost 0-2 | -181453 |
| top | average opponent: 1559record: 2-4 | new rating: 1453 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 45 | Massey, Jamie (1464) | Won 2-1 | +171517 |
| 2block | 39 | Brischso, Chris (1518) | Lost 1-2 | -181499 |
| 3block | 171 | Arnsdorf, Robert (1500) | Won 2-0 | +181517 |
| 4block | 43 | Lewis, David E (1466) | Lost 0-2 | -191498 |
| 5block | 170 | Bologna, Will (1500) | Lost 0-2 | -181480 |
| top | average opponent: 1489record: 2-3 | new rating: 1480 | ||