Sewell, David
Current rating: 1446
Record: 5-8
| Grand Prix Melbourne 2018 (GRN limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 316 | Chan, Gordon (1500) | Lost 1-2 | -171466 |
| 2sealed | 349 | Aberhart, Wez (1485) | Won 2-1 | +181484 |
| 3sealed | 329 | Yasui, Yusuke (1361) | Lost 0-2 | -201464 |
| 4sealed | 273 | Jefferson, Allan (1487) | Lost 1-2 | -181446 |
| average opponent: 1458record: 1-3 | new rating: 1446 | |||
| Grand Prix Melbourne 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 199 | Ladson, Ben (1507) | Won 2-0 | +181518 |
| 2standard | 163 | Tan, Li Ming (1518) | Lost 1-2 | -181500 |
| 3standard | 233 | Liu, Jason (1640) | Lost 0-2 | -151485 |
| 4standard | 308 | Harbour, Aaron (1482) | Won 2-1 | +181503 |
| 5standard | 306 | Ferdinands, Chris (1484) | Lost 1-2 | -191484 |
| 6standard | 278 | Farrell, Patrick (1484) | Lost 0-2 | -181466 |
| 7standard | 261 | Jandausch, Daniel (1466) | Lost 1-2 | -181448 |
| 8standard | 21 | Newby, Eric (1451) | Won 2-1 | +181466 |
| 9standard | 176 | Cao, Vincent (1412) | Won 2-0 | +171483 |
| average opponent: 1494record: 4-5 | new rating: 1483 | |||