Petersen, Jacob
Current rating: 1525
Record: 8-6
| Grand Prix Phoenix 2018 (modern) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 169 | Hui, Brandon (1500) | Won 2-0 | +171566 |
| 2modern | 89 | Ngo, Scott (1562) | Lost 0-2 | -181548 |
| 3modern | 404 | Valiere, Andrew (1499) | Lost 1-2 | -191529 |
| 4modern | 545 | Krause, Travis (1300) | Won 2-0 | +141543 |
| 5modern | 313 | Davison, Daniel (1545) | Lost 1-2 | -181525 |
| average opponent: 1481record: 2-3 | new rating: 1525 | |||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 488 | Robinson, Shelby (1500) | Won 2-1 | +181518 |
| 2sealed | 32 | Sobon, Steven (1391) | Lost 0-2 | -201498 |
| 3sealed | 344 | Baker, Jake (1433) | Won 2-1 | +171515 |
| 4sealed | 172 | Tukeman, Sammy (1596) | Won 2-1 | +191534 |
| 5sealed | 237 | Koo, Eugene (1472) | Lost 0-2 | -191515 |
| 6sealed | 225 | Gerfen, Jacob (1501) | Won 2-0 | +181533 |
| 7sealed | 155 | Guo, Michelle (1423) | Won 2-0 | +161549 |
| 8sealed | 91 | Logsdon, Tai (1573) | Won 2-0 | +181567 |
| 9sealed | 99 | Harbarger, David (1569) | Lost 1-2 | -181549 |
| average opponent: 1495record: 6-3 | new rating: 1549 | |||