Papacostas, Petros A
Current rating: 1446
Record: 3-6
| Grand Prix London 2011 (MBS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 62 | Duthoo, Arthur (1500) | Lost 0-2 | -181482 |
| 2sealed | 103 | Griffin, James (1482) | Won 2-0 | +181500 |
| 3sealed | 77 | Johnson, Matthew [ENG] (1600) | Won 2-1 | +201520 |
| 4sealed | 93 | Dahl, Tina (1421) | Lost 0-2 | -201500 |
| 5sealed | 84 | Parker, Michael (1450) | Won 2-0 | +171517 |
| 6sealed | 64 | Horden, Stuart (1510) | Lost 0-2 | -181499 |
| 7sealed | 88 | Stewart, Peter (1507) | Lost 1-2 | -181481 |
| 8sealed | 68 | Waczynski, Witold (1509) | Lost 0-2 | -171464 |
| 9sealed | 62 | Rees, Alice (1458) | Lost 0-2 | -181446 |
| average opponent: 1493record: 3-6 | new rating: 1446 | |||