Obin, Peter
Current rating: 1486
Record: 2-3
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 407 | Henkin, Aaron (1500) | Won 2-0 | +181518 |
| 2sealed | 126 | Dipsar, Sureyya (1747) | Lost 0-2 | -141504 |
| 3sealed | 449 | Heppding, Nick (1483) | Lost 0-2 | -181486 |
| 4sealed | 756 | Prokes, Mark (1480) | Won 2-1 | +181504 |
| 5sealed | 651 | Hunt, Dan (1514) | Lost 0-2 | -181486 |
| average opponent: 1545record: 2-3 | new rating: 1486 | |||