McCarthy, John [IRL]
Current rating: 1430
Record: 2-6
| Grand Prix London 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 110 | Salah, Tammer (1500) | Won 2-1 | +181518 |
| 2block | 32 | Humphreys, Mark Brian (1619) | Lost 0-2 | -161502 |
| 3block | 176 | Chandler, Martyn (1482) | Lost 0-2 | -191483 |
| 4block | 229 | Stellings, Alexander (1481) | Lost 1-2 | -181465 |
| 5block | 216 | Meyvis, Johan (1464) | Won 2-0 | +181483 |
| 6block | 165 | Silk-Reeves, Shane (1486) | Lost 0-2 | -181465 |
| 7block | 163 | Garnier, Gregory (1464) | Lost 0-2 | -181447 |
| 8block | 149 | Lang, Vincent (1462) | Lost 0-2 | -171430 |
| average opponent: 1495record: 2-6 | new rating: 1430 | |||