Mastin, Jacob
Current rating: 1447
Record: 2-5
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 267 | Geyer, Pierson (1558) | Lost 0-2 | -171483 |
| 2standard | 386 | Hymel, Charissa (1482) | Lost 0-2 | -181465 |
| 3standard | 737 | Garcia Rebolledo, Jose (1466) | Lost 1-2 | -181447 |
| 4standard | 726 | Cox, Philip (1408) | Won 2-0 | +171464 |
| 5standard | 660 | Hubbard, Steven (1492) | Won 2-0 | +191483 |
| 6standard | 635 | Ahern, Dylan (1480) | Lost 0-2 | -181465 |
| 7standard | 586 | Rule, Nathan (1469) | Lost 0-2 | -181447 |
| average opponent: 1479record: 2-5 | new rating: 1447 | |||