Johnston, Bill
Current rating: 1498
Record: 4-4
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Stone, Dan (1481) | Lost 1-2 | -191481 |
| 2sealed | 170 | Saliba, Karim (1468) | Won 2-0 | +181499 |
| 3sealed | 164 | Lacourse, Jean-Denis (1465) | Won 2-0 | +181517 |
| 4sealed | 130 | Chapman, Michael (1494) | Lost 0-2 | -191498 |
| average opponent: 1477record: 2-2 | new rating: 1498 | |||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Mansur, Joanne (1500) | Won 2-0 | +181518 |
| 2sealed | 118 | Bryant, Justin (1500) | Lost 0-2 | -181500 |
| 3sealed | 125 | Cook, Nate (1500) | Won 2-0 | +181518 |
| 4sealed | 88 | Means, Jason (1526) | Lost 0-2 | -181500 |
| average opponent: 1507record: 2-2 | new rating: 1500 | |||