Hlafcsak, Pat
Current rating: 1513
Record: 4-3-1
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 8 | Doak, Sean (1426) | Draw 1-1 | -11499 |
| 2standard | 188 | Strahler, Ralph (1458) | Lost 0-2 | -191480 |
| 3standard | 394 | Baker, John F (1478) | Won 2-0 | +181498 |
| 4standard | 326 | Norwood, Zachary (1496) | Won 2-1 | +181516 |
| 5standard | 229 | Piggott, Jonathan (1457) | Lost 0-2 | -191497 |
| 6standard | 293 | Blondo, Noah (1471) | Won 2-1 | +171514 |
| 7standard | 217 | Majewski, David (1433) | Won 2-0 | +171531 |
| 8standard | 154 | Gupta, Vinay (1558) | Lost 0-2 | -181513 |
| average opponent: 1472record: 4-3-1 | new rating: 1513 | |||