Gerfen, Jacob
Current rating: 1483
Record: 7-8
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 393 | Kruger, Joshua (1500) | Won 2-0 | +191499 |
| 2sealed | 138 | Stadnik, Matthew (1520) | Lost 0-2 | -181481 |
| 3sealed | 424 | Harbarger, David (1500) | Won 2-1 | +181499 |
| 4sealed | 341 | Cheng, Nicholas (1608) | Won 2-1 | +201519 |
| 5sealed | 207 | Andersen, Nathaniel (1501) | Lost 0-2 | -181501 |
| 6sealed | 225 | Petersen, Jacob (1515) | Lost 0-2 | -181483 |
| average opponent: 1524record: 3-3 | new rating: 1483 | |||
| Grand Prix Omaha 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 322 | Neil, Johnathan (1500) | Won 2-0 | +181518 |
| 2modern | 147 | Zupkoff, Andrew (1519) | Won 2-0 | +181536 |
| 3modern | 70 | Stohr, Matt (1467) | Lost 0-2 | -191517 |
| 4modern | 149 | Perigo, Stephen (1496) | Won 2-0 | +171534 |
| 5modern | 198 | Meier, Gregory (1529) | Lost 1-2 | -181516 |
| 6modern | 191 | Zaczek, Jonathon (1479) | Lost 0-2 | -181498 |
| 7modern | 257 | Schulte, Chris (1490) | Won 2-1 | +171515 |
| 8modern | 215 | Price, John (1554) | Lost 0-2 | -171498 |
| 9modern | 200 | Skrabut, Chris (1497) | Lost 0-2 | -181480 |
| average opponent: 1503record: 4-5 | new rating: 1480 | |||