Durkee, John
Current rating: 1464
Record: 1-3-1
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 558 | Hardwick, Tylor (1500) | Lost 0-2 | -181482 |
| 2standard | 485 | Layton, Mark (1482) | Won 2-1 | +181500 |
| 3standard | 396 | Pavelchak, Drew (1567) | Draw 1-1 | +11501 |
| 4standard | 496 | Barnes, Justin (1449) | Lost 0-2 | -191482 |
| 5standard | 610 | Moss, Stephen (1452) | Lost 1-2 | -181464 |
| average opponent: 1490record: 1-3-1 | new rating: 1464 | |||