Koehn, Jacob
Current rating: 1470
Record: 5-7
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 236 | Shepard, Michael (1484) | Won 2-0 | +181503 |
| 2sealed | 80 | Soules, Daniel (1421) | Lost 1-2 | -201483 |
| 3sealed | 358 | Guillory, Seth (1729) | Lost 0-2 | -141469 |
| 4sealed | 423 | Thompson, Landon (1468) | Won 2-0 | +181487 |
| 5sealed | 280 | Richard, Shawn (1503) | Lost 1-2 | -171470 |
| average opponent: 1521record: 2-3 | new rating: 1470 | |||
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 391 | Baca, Megan (1500) | Won 2-0 | +181518 |
| 2modern | 36 | Simard, Mark (1556) | Lost 0-2 | -171501 |
| 3modern | 333 | Chapman, Michael (1573) | Lost 0-2 | -171484 |
| 4modern | 442 | Ybarbo, Christian (1485) | Lost 1-2 | -181466 |
| 5modern | 576 | Sughroue, Daniel (1416) | Won 2-1 | +171483 |
| 6modern | 412 | Lahman, Faessal (1568) | Lost 0-2 | -161467 |
| 7modern | 491 | McDowell, Nathan (1462) | Won 2-0 | +181485 |
| average opponent: 1509record: 3-4 | new rating: 1485 | |||