De Cock, David
Current rating: 1472
| Grand Prix Liverpool 2017 (XLN limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Kapetanakis, Nasos (1535) | Won 2-1 | +191494 |
| 2sealed | 207 | Clarke, Samuel (1596) | Lost 0-2 | -161478 |
| 3sealed | 478 | Boswell, Samuel (1503) | Won 2-0 | +181496 |
| 4sealed | 270 | Fawkes, Anthony (1542) | Won 2-0 | +191515 |
| 5sealed | 196 | Heuser, Marius (1913) | Won 2-0 | +251540 |
| 6sealed | 55 | Russell, Harry (1565) | Lost 0-2 | -181522 |
| 7sealed | 214 | Lynch, Alan (1498) | Lost 1-2 | -181504 |
| 8sealed | 198 | Vartanian, Adam (1644) | Lost 0-2 | -151489 |
| 9sealed | 275 | Rashkov, Nikola (1560) | Lost 1-2 | -171472 |
| top | average opponent: 1595record: 4-5 | new rating: 1472 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 442 | Von Kalkstein, Christian (1837) | Lost 0-2 | -121473 |
| 2sealed | 387 | Skov, Soeren (1539) | Won 2-1 | +191492 |
| 3sealed | 525 | Weissling, Christian (1567) | Lost 1-2 | -171475 |
| 4sealed | 586 | Dorival, Aurelien (1413) | Won 2-1 | +171492 |
| 5sealed | 494 | Zehm, Wolfgang (1522) | Lost 0-2 | -171475 |
| top | average opponent: 1576record: 2-3 | new rating: 1475 | ||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 40 | Love, James (1661) | Lost 0-2 | -151485 |
| 4standard | 265 | Gomes, Guilherme (1493) | Lost 0-2 | -181467 |
| 5standard | 416 | Thomson, Matthew (1474) | Lost 0-2 | -181449 |
| 6standard | 520 | Kelly, Kieran (1415) | Won 2-1 | +181467 |
| 7standard | 407 | Denien, Tim (1517) | Lost 0-2 | -181449 |
| 8standard | 415 | Krstevski, Grigor (1349) | Won 2-0 | +171466 |
| 9standard | 358 | van Tol, Maarten (1524) | Won 2-1 | +191485 |
| top | average opponent: 1490record: 3-4 | new rating: 1485 | ||