Briggs, William
Current rating: 1499
| Grand Prix Columbus 2010 (legacy) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 132 | Castaneda, Abel (1500) | Lost 0-2 | -191535 |
| 3legacy | 136 | Talley, Ty (1500) | Lost 1-2 | -191516 |
| 4legacy | 212 | Gilly, Sammy (1537) | Lost 1-2 | -171499 |
| top | average opponent: 1512record: 0-3 | new rating: 1499 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 52 | Gibson, William (1514) | Won 2-0 | +181545 |
| 3standard | 133 | Leon Valencia, Francisco (1707) | Won 2-1 | +211566 |
| 4standard | 95 | Ochoa, David (2046) | Lost 1-2 | -101556 |
| 5standard | 143 | Baudy, Pete (1538) | Won 2-0 | +171573 |
| 6standard | 32 | Rowe, Jonathan (1556) | Won 2-0 | +181591 |
| 7standard | 47 | Tondini, Jerry (1573) | Lost 0-2 | -181573 |
| 8standard | 109 | Donato, Matthew (1525) | Lost 0-2 | -191554 |
| top | average opponent: 1637record: 4-3 | new rating: 1554 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 89 | Thieleman, Eric (1502) | Lost 1-2 | -181482 |
| 2sealed | 236 | Alorn, Eddie (1482) | Won 2-0 | +181500 |
| 3sealed | 206 | Stefanovic, Lou (1535) | Won 2-0 | +191519 |
| 4sealed | 194 | McGrail, Michael (1518) | Won 2-0 | +181537 |
| 5sealed | 72 | Birklid, Steven (1712) | Won 2-1 | +211558 |
| 6sealed | 51 | Casatti, Vagner William (1771) | Won 2-1 | +221580 |
| 7sealed | 59 | De Michielli, Luiz Guilherme (1637) | Lost 1-2 | -171563 |
| 8sealed | 71 | McGraw, Bryan (1653) | Lost 0-2 | -171546 |
| 9sealed | 111 | Miller, Christopher (1471) | Lost 1-2 | -191527 |
| top | average opponent: 1587record: 5-4 | new rating: 1527 | ||