Petterson, Alex
Current rating: 1501
Record: 6-6
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 64 | Kopp, Patrick (1610) | Won 2-1 | +201538 |
| 4sealed | 41 | Porter, Shawn (1549) | Lost 1-2 | -181520 |
| 5sealed | 95 | Chu, Jonathan (1537) | Won 2-1 | +181538 |
| 6sealed | 33 | Chien, Andrew (1517) | Lost 1-2 | -181520 |
| 7sealed | 116 | Sendaydiego, Curt (1471) | Lost 1-2 | -191501 |
| average opponent: 1537record: 2-3 | new rating: 1501 | |||
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 340 | Dvorak, Mathew C (1484) | Lost 1-2 | -181482 |
| 2sealed | 372 | Benson, Marjace (1504) | Lost 1-2 | -181464 |
| 3sealed | 474 | Carr, Peter (1464) | Won 2-0 | +181482 |
| 4sealed | 377 | Downs, Austin (1481) | Won 2-1 | +181500 |
| 5sealed | 354 | Carroll, David (1499) | Won 2-1 | +181518 |
| 6sealed | 301 | Johnson, Daniel L (1517) | Won 2-1 | +181536 |
| 7sealed | 231 | Sosko, Darin J (1537) | Lost 1-2 | -181518 |
| average opponent: 1498record: 4-3 | new rating: 1518 | |||