Gibson, Marshall [USA]
Current rating: 1520
Record: 3-3
| Grand Prix San Diego 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 88 | Hatamian, Emin (1520) | Won 2-0 | +181518 |
| 5modern | 50 | De Rouen, Beau (1538) | Won 2-0 | +191537 |
| 6modern | 12 | Woods, Conley (1938) | Lost 0-2 | -111526 |
| 7modern | 31 | Froehlich, Eric (2001) | Lost 0-2 | -101516 |
| 8modern | 70 | Brynildsen, Stephen (1556) | Won 2-0 | +181534 |
| 9modern | 32 | Gerhardt, Scott (1740) | Lost 1-2 | -141520 |
| average opponent: 1716record: 3-3 | new rating: 1520 | |||