Heffernan, Jonathan
Current rating: 1451
Record: 2-5
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 118 | Roe, Kyle (1478) | Won 2-1 | +181518 |
| 2standard | 90 | Andersen, Christoffer (1796) | Lost 0-2 | -131505 |
| 3standard | 314 | Hay, Kyle (1431) | Lost 1-2 | -201485 |
| 4standard | 570 | Schultz, Christopher (1346) | Lost 1-2 | -201465 |
| 5standard | 523 | Gorman, Nick (1465) | Won 2-0 | +181483 |
| 6standard | 433 | Holosko, Joel (1695) | Lost 0-2 | -141469 |
| 7standard | 392 | Tournear, Nathaniel (1512) | Lost 0-2 | -181451 |
| average opponent: 1532record: 2-5 | new rating: 1451 | |||