McDonald, Jason
Current rating: 1398
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 271 | Height, Paul (1500) | Lost 1-2 | -171430 |
| 2sealed | 375 | Kelly, Philip (1463) | Lost 0-2 | -171413 |
| 3sealed | 537 | Genkins, Daniel (1563) | Lost 1-2 | -151398 |
| top | average opponent: 1509record: 0-3 | new rating: 1398 | ||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 351 | Morris, Brian (1500) | Won 2-1 | +191483 |
| 2sealed | 261 | Rolfes, Lyle (1560) | Lost 0-2 | -171466 |
| 3sealed | 555 | Metzger, Kristofer (1499) | Won 2-0 | +191485 |
| 4sealed | 410 | Hancher, Gregory (1515) | Lost 0-2 | -181467 |
| 5sealed | 528 | Foley, Thomas (1366) | Lost 0-2 | -201447 |
| top | average opponent: 1488record: 2-3 | new rating: 1447 | ||
| Grand Prix Brisbane 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Burns, Luke (1500) | Lost 1-2 | -181482 |
| 2sealed | 51 | Caynes, Albert (1482) | Won 2-0 | +181500 |
| 3sealed | 51 | Tappin, Andrew (1500) | Won 2-0 | +181518 |
| 4sealed | 46 | Bowers, Sam (1519) | Lost 1-2 | -181500 |
| 5sealed | 57 | Purvis, Timothy (1497) | Lost 1-2 | -181482 |
| 6sealed | 73 | Howe, Peter (1481) | Lost 0-2 | -181464 |
| top | average opponent: 1497record: 2-4 | new rating: 1464 | ||