McGuffey, Charles
Current rating: 1642
Record: 11-4
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 638 | Harding, Ian (1448) | Won 2-1 | +171517 |
| 2modern | 203 | Lee, Joseph (1502) | Won 2-0 | +181535 |
| 3modern | 94 | Slutsky, Simon (1555) | Won 2-0 | +181553 |
| 4modern | 74 | Loftus, Conor (1596) | Won 2-0 | +191572 |
| 5modern | 126 | Freel, Dan (1783) | Won 2-1 | +221594 |
| 6modern | 50 | Byrne, Patrick [USA] (1572) | Lost 0-2 | -191575 |
| 7modern | 172 | Roskam, Jason (1636) | Won 2-1 | +191594 |
| 8modern | 88 | Flink, Chris (1724) | Won 2-1 | +211615 |
| 9modern | 51 | De Rosa, Michael (1637) | Won 2-0 | +181633 |
| 10modern | 144 | Van Leeuwen, Andrew (1745) | Won 2-0 | +201653 |
| 11modern | 10 | Pasqualetti, Joey (1548) | Lost 0-2 | -201633 |
| 12modern | 58 | Brandon, Kyle (1702) | Lost 1-2 | -161617 |
| 13modern | 58 | Helfer, Zachary (1532) | Won 2-1 | +161633 |
| 14modern | 30 | Lebedowicz, Osyp (1921) | Lost 0-2 | -131620 |
| 15modern | 66 | Felicetti, Ted (1842) | Won 2-0 | +221642 |
| average opponent: 1650record: 11-4 | new rating: 1642 | |||