Williams, Robert O
Current rating: 1433
Record: 2-6-1
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 814 | Hughes, Donte (1500) | Won 2-0 | +191464 |
| 2sealed | 348 | Uttke, Ryan (1607) | Draw 1-1 | +31467 |
| 3sealed | 211 | Pham, Timothy (1518) | Lost 1-2 | -171450 |
| 4sealed | 327 | Bueno, John (1495) | Lost 0-0 | -171433 |
| average opponent: 1530record: 1-2-1 | new rating: 1433 | |||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Bondioli, Mark (1500) | Won 2-0 | +181518 |
| 2sealed | 201 | Roberts, Rob (1443) | Lost 0-2 | -191499 |
| 3sealed | 253 | Lewis, Chris L (1483) | Lost 1-2 | -191480 |
| 4sealed | 354 | Tremblay, Sebastien (1533) | Lost 0-2 | -171463 |
| 5sealed | 317 | Muhammad II, Waajid (1464) | Lost 1-2 | -181445 |
| average opponent: 1484record: 1-4 | new rating: 1445 | |||