Pierce, David A
Current rating: 1482
Record: 4-5
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 381 | Paterson, Dean (1457) | Lost 0-2 | -191481 |
| 2standard | 634 | Risner, Daniel (1482) | Won 2-1 | +181499 |
| 3standard | 612 | Chubb, Chris (1471) | Lost 0-2 | -181481 |
| 4standard | 583 | McCully, Kevin (1481) | Won 2-0 | +181499 |
| 5standard | 499 | Farrey, Holden (1500) | Won 2-0 | +181517 |
| 6standard | 413 | Stroud, Ryan (1507) | Lost 1-2 | -181499 |
| 7standard | 410 | Reardon, Thomas (1623) | Lost 1-2 | -161483 |
| 8standard | 437 | Pratt-Bennett, Benjamen (1480) | Lost 0-2 | -181465 |
| 9standard | 403 | Onagan, Chris (1417) | Won 2-0 | +171482 |
| average opponent: 1491record: 4-5 | new rating: 1482 | |||