David, Grant
Current rating: 1417
Record: 4-9
| Grand Prix Prague 2017 (AER limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 102 | Reimche, Wadim (1603) | Lost 1-2 | -151434 |
| 2sealed | 513 | Kalmar, Robert (1481) | Won 2-0 | +191453 |
| 3sealed | 801 | Belasta, Matej (1716) | Lost 0-2 | -141439 |
| 4sealed | 787 | Centis, Paolo (1448) | Won 2-0 | +191458 |
| 5sealed | 727 | Wlodarczyk, Lukasz (1503) | Lost 1-2 | -181440 |
| 6sealed | 728 | Fischer, Juliane (1157) | Lost 1-2 | -231417 |
| average opponent: 1485record: 2-4 | new rating: 1417 | |||
| Grand Prix London 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 213 | Dalby, Rasmus (1500) | Lost 0-2 | -181482 |
| 2sealed | 891 | Holgate, Callum (1483) | Won 2-1 | +181500 |
| 3sealed | 869 | Leroy, Yannick (1603) | Lost 1-2 | -161484 |
| 4sealed | 1061 | Hedley, Gareth (1483) | Won 2-0 | +181502 |
| 5sealed | 699 | Fokkema, Toon (1304) | Lost 0-2 | -221480 |
| 6sealed | 804 | Bunker, Ben (1492) | Lost 1-2 | -171463 |
| 8sealed | 781 | Steinaa, Peter (1714) | Lost 0-2 | -141449 |
| average opponent: 1511record: 2-5 | new rating: 1449 | |||