Ballance, David
Current rating: 1462
Record: 5-7
| Grand Prix Portland 2019 (ELD standard) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Tolson, Andrew (1596) | Lost 1-2 | -161480 |
| 2standard | 147 | McCourt, Brian (1492) | Lost 1-2 | -181462 |
| 3standard | 239 | Mckee, Michael (1463) | Won 0-0 | +181480 |
| 4standard | 223 | Mccallum, Scott (1486) | Lost 0-2 | -181462 |
| average opponent: 1509record: 1-3 | new rating: 1462 | |||
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 51 | Sanford, Ryan (1446) | Lost 0-2 | -191481 |
| 2modern | 676 | Dolato, Michael (1482) | Lost 0-2 | -181463 |
| 3modern | 785 | Lafferty, Michael (1468) | Lost 0-2 | -181445 |
| 4modern | 836 | Butensky, Max (1443) | Won 1-0 | +181463 |
| 5modern | 750 | Humpherys, Nathan (1334) | Lost 0-2 | -201443 |
| 6modern | 645 | Bond, Taylor (1447) | Won 1-0 | +181461 |
| 7modern | 504 | Crammond, Alder (1465) | Won 2-1 | +181479 |
| 8modern | 372 | Shurley, Clayton (1446) | Won 2-0 | +171496 |
| average opponent: 1441record: 4-4 | new rating: 1496 | |||