Portillo, Zachary
Current rating: 1462
Record: 2-4
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 507 | Pirozzi, Lucca (1500) | Lost 1-2 | -181482 |
| 2modern | 985 | Mathieson, Robert (1492) | Won 2-0 | +181500 |
| 3modern | 904 | Smith, Gunnar (1482) | Lost 0-2 | -181482 |
| 4modern | 1107 | Bachicha, Lane (1388) | Lost 1-2 | -201462 |
| 5modern | 1263 | Miranda, Albert (1466) | Won 2-1 | +181480 |
| 6modern | 1054 | Ayerite, Maclean (1484) | Lost 0-2 | -181462 |
| average opponent: 1469record: 2-4 | new rating: 1462 | |||