Sobkowicz, Tim
Current rating: 1427
Record: 5-9
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 832 | Rice, Forrest (1482) | Lost 0-2 | -181465 |
| 2modern | 1171 | Oransky, Sam (1483) | Won 2-0 | +181483 |
| 3modern | 1084 | Goulart, Alex (1414) | Lost 0-2 | -191464 |
| 4modern | 1193 | Yonika, Joshua (1483) | Lost 1-2 | -181446 |
| 5modern | 1160 | Mapson, Michael (1381) | Lost 1-2 | -191427 |
| average opponent: 1449record: 1-4 | new rating: 1427 | |||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 579 | Dowling, Michael (1590) | Lost 1-2 | -161484 |
| 2sealed | 552 | Giuliante, Thomas (1526) | Lost 0-2 | -181466 |
| 3sealed | 707 | Rafferty, Zachary (1465) | Lost 0-2 | -181448 |
| 4sealed | 831 | Flynn, John (1446) | Won 2-1 | +181466 |
| 5sealed | 683 | Dreyer, Steven P (1432) | Won 2-1 | +181484 |
| 6sealed | 604 | Samuelson, David (1482) | Won 2-0 | +181502 |
| 7sealed | 434 | Mondello, Jake (1438) | Lost 0-2 | -191483 |
| 8sealed | 370 | Stevens, Ryan (1455) | Lost 1-2 | -191464 |
| 9sealed | 325 | Johnson, James (1524) | Won 2-1 | +191483 |
| average opponent: 1484record: 4-5 | new rating: 1483 | |||