Furr, Marcus S
Current rating: 1502
Record: 7-7
| Grand Prix Portland 2013 (modern) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 78 | Patrick-Riley, Josh (1403) | Lost 0-2 | -211502 |
| 2modern | 248 | Bernanrdo, Stewart (1482) | Lost 1-2 | -181484 |
| 3modern | 352 | Aasen, Andrew (1464) | Won 2-0 | +181502 |
| 4modern | 407 | Thompson, Matthew (1482) | Won 2-1 | +171519 |
| 5modern | 348 | Holden, Russell (1668) | Lost 0-2 | -151504 |
| 6modern | 320 | Fouquet, Benjamin (1465) | Won 2-1 | +171521 |
| 7modern | 263 | Selsing, Nicholas (1451) | Lost 0-2 | -191502 |
| average opponent: 1488record: 3-4 | new rating: 1502 | |||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 297 | Phippen, Bryan W (1500) | Won 2-1 | +181518 |
| 2sealed | 281 | Dolbeer, Jed (1681) | Lost 1-2 | -151503 |
| 3sealed | 377 | Richards, Adam (1501) | Won 2-0 | +181521 |
| 4sealed | 190 | Stoddard, Robert (1518) | Won 2-0 | +181539 |
| 5sealed | 242 | KLUG, HAYLEY E (1537) | Won 2-0 | +181557 |
| 6sealed | 61 | Beckfield, Peter (1557) | Lost 0-2 | -181539 |
| 7sealed | 136 | Bartolomei, Iain (1633) | Lost 0-2 | -161523 |
| average opponent: 1561record: 4-3 | new rating: 1523 | |||