Mallams, Brian
Current rating: 1523
Record: 4-3
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 17 | Stears, Jason (1519) | Won 2-0 | +181518 |
| 2block | 63 | Chin, Chris (1594) | Won 2-0 | +201538 |
| 3block | 11 | Jackman, Brock (1537) | Won 2-1 | +181556 |
| 4block | 51 | Peters, Jeff (1444) | Won 2-0 | +161572 |
| 5block | 7 | Schneider, Justin (1918) | Lost 0-2 | -121560 |
| 6block | 45 | Ferneyhough, Michael (1500) | Lost 0-2 | -191541 |
| 7block | 93 | Adams, Jason (1544) | Lost 1-2 | -181523 |
| average opponent: 1579record: 4-3 | new rating: 1523 | |||