Williams, Robert N
Current rating: 1329
| Grand Prix Brisbane 2013 (modern) | starting rating: 1378 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 72 | Townsend, Nathan (1500) | Lost 0-2 | -161362 |
| 2modern | 164 | Carter, Mark (1437) | Lost 1-2 | -171345 |
| 3modern | 212 | Frankham, Scott (1443) | Lost 0-2 | -161329 |
| top | average opponent: 1460record: 0-3 | new rating: 1329 | ||
| Grand Prix Brisbane 2011 (ISD standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Radvanskiy, Kirill (1500) | Lost 1-2 | -171411 |
| 2standard | 127 | Tapley, Barbara (1482) | Lost 1-2 | -171394 |
| 3standard | 141 | Murr, Ryan (1464) | Lost 1-2 | -161378 |
| top | average opponent: 1482record: 0-3 | new rating: 1378 | ||
| Grand Prix Brisbane 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Pohlman, Peter (1500) | Lost 0-2 | -181482 |
| 2sealed | 53 | Harris, Cameron (1482) | Lost 0-2 | -181464 |
| 3sealed | 75 | Everitt, Paul (1447) | Lost 0-2 | -181446 |
| 4sealed | 94 | Caraher, Stephen (1446) | Lost 0-2 | -181428 |
| top | average opponent: 1469record: 0-4 | new rating: 1428 | ||