Marick, John
Current rating: 1390
Record: 1-7
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 414 | Turner, Eathan (1497) | Lost 1-2 | -181482 |
| 2modern | 642 | O'Dell, Darrin (1445) | Lost 1-2 | -191463 |
| 3modern | 760 | Preciado, Anthony (1496) | Lost 0-2 | -171446 |
| 4modern | 815 | Jarsscke, Gavin (1443) | Won 2-1 | +181464 |
| 5modern | 738 | Parker, Philip (1462) | Lost 0-2 | -181446 |
| 6modern | 633 | Sanchez, Alfredo (1463) | Lost 0-2 | -181428 |
| 7modern | 537 | Eastburn, Stephen (1392) | Lost 1-2 | -191409 |
| 8modern | 437 | Collins, Jamin (1335) | Lost 1-2 | -191390 |
| average opponent: 1442record: 1-7 | new rating: 1390 | |||