Oster, Corey
Current rating: 1490
Record: 4-5
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 468 | Gibson-Flader, Max (1693) | Lost 0-2 | -151485 |
| 2standard | 680 | Franklin, Kaleb (1482) | Won 2-0 | +181503 |
| 3standard | 374 | Herbert, Scott (1503) | Won 2-0 | +181521 |
| 4standard | 283 | Bianco, John (1524) | Won 2-0 | +181539 |
| 5standard | 142 | Schultze, Nate (1541) | Lost 1-2 | -171522 |
| 6standard | 305 | Zureick-Brown, David (1468) | Lost 0-2 | -191503 |
| 7standard | 472 | Buchanan, Jason (1506) | Won 2-1 | +181521 |
| 8standard | 315 | Parshall, Chris (1608) | Lost 0-2 | -171504 |
| 9standard | 353 | Niday, Lucas (1716) | Lost 0-2 | -141490 |
| average opponent: 1560record: 4-5 | new rating: 1490 | |||