Jarmak, Ben
Current rating: 1485
Record: 2-3
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 453 | Tripp, Joseph (1500) | Won 2-0 | +181518 |
| 2sealed | 127 | Jupiter, Jermol (1649) | Won 2-0 | +201538 |
| 3sealed | 214 | Foley, Dennis (1556) | Lost 1-2 | -171521 |
| 4sealed | 516 | Bosen, Arthur L (1540) | Lost 0-2 | -181503 |
| 5sealed | 546 | Birkeland, Eric (1499) | Lost 0-2 | -181485 |
| average opponent: 1549record: 2-3 | new rating: 1485 | |||