Powell, David
Current rating: 1541
Record: 9-7
| Grand Prix Sydney 2015 (BFZ limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 111 | Winter, Christine (1500) | Won 2-0 | +191498 |
| 2sealed | 212 | Wynberg, Jacob (1517) | Lost 1-2 | -181480 |
| 3sealed | 271 | Collier, Luke (1500) | Won 2-0 | +181498 |
| 4sealed | 238 | Nicholson, Phillip (1516) | Lost 0-2 | -171481 |
| 5sealed | 222 | Gardiner, Chris (1503) | Won 2-0 | +181499 |
| 6sealed | 133 | Winata, Andrew (1486) | Won 2-1 | +181517 |
| 7sealed | 156 | Armstrong, Kimberley (1532) | Won 2-0 | +181535 |
| 8sealed | 83 | Wu, Hao (1745) | Won 2-0 | +221557 |
| 9sealed | 71 | Chen, Gary [AUS] (1653) | Lost 1-2 | -161541 |
| average opponent: 1550record: 6-3 | new rating: 1541 | |||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 448 | Luciano, Gilbert (1478) | Won 2-0 | +181518 |
| 2block | 108 | Harden, Adam (1500) | Lost 1-2 | -191499 |
| 3block | 509 | Murphy, Tadhg (1452) | Won 2-0 | +171516 |
| 4block | 334 | James, Katrina (1518) | Lost 1-2 | -181498 |
| 5block | 313 | Davies, Tom (1434) | Won 2-1 | +171515 |
| 6block | 280 | Mayes, Simon (1500) | Lost 0-2 | -181497 |
| 7block | 306 | Dubrovska, Nataliya (1504) | Lost 0-2 | -181479 |
| average opponent: 1484record: 3-4 | new rating: 1479 | |||