Stupka, Owen
Current rating: 1431
Record: 3-7
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 26 | Bedard, Mathieu (1430) | Lost 0-2 | -191445 |
| 2block | 156 | Barlow, Jacob (1482) | Won 2-1 | +191464 |
| 3block | 157 | Imrick, Mike (1500) | Won 2-0 | +191483 |
| 4block | 114 | Nostrant, Jayme (1488) | Won 2-1 | +181501 |
| 5block | 109 | Cutler, Aaron (1482) | Lost 0-2 | -191482 |
| 6block | 138 | Falk, Andy (1474) | Lost 1-2 | -181464 |
| 7block | 140 | Reeder, Jared (1552) | Lost 1-2 | -161448 |
| 8block | 118 | Stanhope, Jim (1483) | Lost 0-2 | -171431 |
| average opponent: 1486record: 3-5 | new rating: 1431 | |||
| Grand Prix Cleveland 2002 (Odyssey block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 10 | Cucunato, Robert (1500) | Lost 0-2 | -181482 |
| 2block | 246 | Steele, Bob (1482) | Lost 0-2 | -181464 |
| average opponent: 1491record: 0-2 | new rating: 1464 | |||