Jacobson, David
Current rating: 1469
Record: 2-4
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 644 | Ortiz, Nick (1500) | Won 2-0 | +181518 |
| 2standard | 80 | Rudd, Jon (1423) | Lost 1-2 | -201498 |
| 3standard | 333 | Eurs, Casey (1500) | Lost 0-2 | -181480 |
| 4standard | 671 | Knox, Nathaniel (1639) | Lost 0-2 | -151465 |
| 5standard | 704 | Niday, Lucas (1697) | Lost 0-2 | -141451 |
| 6standard | 679 | Loney, Kyle (1446) | Won 2-1 | +181469 |
| average opponent: 1534record: 2-4 | new rating: 1469 | |||