Sebben, Matthew
Current rating: 1510
Record: 7-7-1
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 702 | Fay, Eli (1500) | Won 2-0 | +181489 |
| 2modern | 833 | Membrez-Weiler, Nicholas (1516) | Draw 1-1 | +11490 |
| 3modern | 922 | Price, John (1506) | Lost 1-2 | -181472 |
| 4modern | 1068 | Zalenski, Alexander (1500) | Lost 1-2 | -171455 |
| 5modern | 1135 | Cooper, Russell (1484) | Won 2-0 | +181473 |
| 6modern | 1030 | Cheng, Wei-hung (1517) | Lost 1-2 | -171456 |
| 7modern | 1003 | Pottle, Allan (1492) | Won 2-1 | +181474 |
| 8modern | 917 | Shoemaker, Stephen (1494) | Won 2-1 | +191493 |
| 9modern | 858 | Bass, Anthony (1471) | Won 2-0 | +171510 |
| average opponent: 1498record: 5-3-1 | new rating: 1510 | |||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 26 | Boddy, Michael J (1629) | Won 2-0 | +201520 |
| 5modern | 14 | Jette, Jonathan (1604) | Lost 0-2 | -161504 |
| 6modern | 95 | Liu, Brian (1537) | Lost 0-2 | -181486 |
| 7modern | 119 | jessop, david (1539) | Won 2-0 | +191505 |
| 8modern | 65 | Gregoire, Alex (1571) | Lost 0-2 | -161489 |
| 9modern | 158 | Hatch, Benjamin W (1491) | Lost 1-2 | -181471 |
| average opponent: 1562record: 2-4 | new rating: 1471 | |||