Oberfield, Brent
Current rating: 1521
Record: 9-8-1
| Grand Prix Tampa Bay 2002 (TOR limited) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 70 | Denmark, James (1480) | Draw 1-1 | -11538 |
| 3sealed | 64 | Draxler, Paul (1518) | Lost 0-2 | -181520 |
| 4sealed | 134 | Sonmez, John (1500) | Won 2-0 | +181538 |
| 5sealed | 99 | Quirk, Kevin (1599) | Lost 0-2 | -171521 |
| top | average opponent: 1524record: 1-2-1 | new rating: 1521 | ||
| Grand Prix Atlanta 2001 (ODY limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 25 | Jones, Ricky (1514) | Lost 1-2 | -191542 |
| 3sealed | 72 | Taint, Russell (1481) | Won 2-0 | +171559 |
| 4sealed | 106 | Leone, Paul (1484) | Lost 0-2 | -201539 |
| top | average opponent: 1493record: 1-2 | new rating: 1539 | ||
| Grand Prix Denver 2001 (Invasion block) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 32 | Webb, Randy (1500) | Won 2-0 | +181517 |
| 2block | 20 | Ehrhart, Tammy (1518) | Won 2-0 | +191536 |
| 3block | 52 | Williams, Stacy (1472) | Won 2-1 | +161552 |
| 4block | 25 | Foerster, Stephen (1500) | Won 2-0 | +171569 |
| 5block | 22 | Shears, Brett (1572) | Lost 0-2 | -181551 |
| 6block | 48 | O'Mahoney-Schwartz, Daniel (1676) | Won 2-1 | +211572 |
| 7block | 9 | Williams, David A (1981) | Lost 1-2 | -111561 |
| top | average opponent: 1603record: 5-2 | new rating: 1561 | ||
| Grand Prix New Orleans 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Wolf, Andrew (1565) | Lost 1-2 | -171483 |
| 2sealed | 123 | Lambert, Christopher (1482) | Won 2-0 | +181501 |
| 3sealed | 117 | Dunning, Laurie (1407) | Lost 0-2 | -201481 |
| 4sealed | 173 | Lindblom, John (1482) | Won 2-0 | +181499 |
| top | average opponent: 1484record: 2-2 | new rating: 1499 | ||