Cook, Rob
Current rating: 1504
Record: 3-3
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 524 | Gilbert, Aaron (1503) | Won 2-0 | +181518 |
| 2modern | 173 | Young, Derek (1671) | Lost 0-1 | -151503 |
| 3modern | 403 | Cabero, Paul Gerald (1464) | Lost 0-2 | -191484 |
| 4modern | 739 | Sorenson, Curtis (1482) | Won 2-1 | +181502 |
| 5modern | 490 | Miller, Aaron (1635) | Won 2-1 | +201522 |
| 6modern | 449 | McBride, Jeremy (1501) | Lost 0-2 | -181504 |
| average opponent: 1543record: 3-3 | new rating: 1504 | |||