Simpson, Joseph
Current rating: 1500
Record: 3-3
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 655 | Classon, Anton (1500) | Lost 1-2 | -181482 |
| 2sealed | 549 | Luczak, Miroslaw (1482) | Won 2-1 | +181500 |
| 3sealed | 620 | Busk, Kim (1575) | Lost 0-2 | -171483 |
| 4sealed | 683 | Guille, Henry (1480) | Won 2-1 | +181501 |
| 5sealed | 582 | Turek, Nicolas (1442) | Lost 0-2 | -191482 |
| 6sealed | 696 | Williams, LoneWolf (1483) | Won 2-0 | +181500 |
| average opponent: 1494record: 3-3 | new rating: 1500 | |||