Lanahan, Robert J
Current rating: 1487
Record: 2-3
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 428 | Ribak, Jay D (1500) | Won 2-1 | +181518 |
| 2sealed | 450 | Palmerio, Anthony (1518) | Lost 1-2 | -181500 |
| 3sealed | 546 | Stickle, Jeffrey (1450) | Won 2-0 | +171517 |
| 4sealed | 495 | Vonholtz, James C (1522) | Lost 1-2 | -181499 |
| 5sealed | 588 | West, Alexander (1830) | Lost 0-2 | -121487 |
| average opponent: 1564record: 2-3 | new rating: 1487 | |||