Pinkney, Jacob
Current rating: 1521
Record: 4-3
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 247 | Conner F., (1500) | Won 2-1 | +181518 |
| 2sealed | 65 | Egli, Adam J (1519) | Lost 1-2 | -181500 |
| 3sealed | 557 | Shanck, Matt (1500) | Won 2-0 | +181518 |
| 4sealed | 574 | Ziet, Kevin (1577) | Won 2-1 | +191537 |
| 5sealed | 152 | Monh, Christopher (1536) | Lost 1-2 | -181519 |
| 6sealed | 276 | Li, Brian (1519) | Won 2-0 | +181537 |
| 7sealed | 210 | Hedges, Michael (1650) | Lost 0-2 | -161521 |
| average opponent: 1543record: 4-3 | new rating: 1521 | |||