Weyersberg, Roger
Current rating: 1569
Record: 9-6
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1 | Coats, Michael (1519) | Won 2-0 | +181518 |
| 2modern | 96 | McGinnis, Brennan (1521) | Won 0-0 | +181536 |
| 3modern | 115 | Baumiller, Ronald (1500) | Lost 0-2 | -181518 |
| 4modern | 351 | Colista, Anthony (1517) | Won 2-1 | +181536 |
| 5modern | 309 | Bisson, Stephane (1661) | Won 2-0 | +201556 |
| 6modern | 142 | Strasler, Noah (1552) | Lost 0-2 | -181538 |
| 7modern | 230 | Jeries, Luke (1546) | Won 2-1 | +181556 |
| 8modern | 170 | Vilseck, Keith (1552) | Won 2-0 | +181574 |
| 9modern | 135 | Black, Kyle (1506) | Won 2-1 | +171591 |
| 10modern | 34 | Ma, Will (1781) | Lost 0-2 | -151576 |
| 11modern | 84 | Nostrant, Jayme (1599) | Lost 1-2 | -171559 |
| 12modern | 86 | Gleeson, Michael (1554) | Won 2-0 | +181577 |
| 13modern | 65 | Manfield, Seth (2060) | Won 2-1 | +261603 |
| 14modern | 57 | Marge, Matthew (1620) | Lost 1-2 | -181585 |
| 15modern | 69 | Lanigan, Mike (1685) | Lost 0-2 | -161569 |
| average opponent: 1612record: 9-6 | new rating: 1569 | |||