Drewes, David
Current rating: 1438
Record: 14-21-1
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1382 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 556 | Heligr, Jan (1429) | Won 2-0 | +191401 |
| 2sealed | 524 | Gommans, Dave (1518) | Won 2-0 | +201421 |
| 3sealed | 562 | Frerichs, Jurgen (1527) | Lost 0-2 | -161405 |
| 4sealed | 712 | Uhlmann, Stefan (1518) | Won 2-0 | +201425 |
| 5sealed | 653 | Ruesink, Tim (1461) | Won 2-1 | +191444 |
| 6sealed | 601 | Jacob, Jeremie (1599) | Lost 1-2 | -151429 |
| 7sealed | 612 | Calcano, Christian (1841) | Won 2-0 | +251454 |
| 8sealed | 579 | Weiss, Jonas (1568) | Lost 1-2 | -161438 |
| top | average opponent: 1558record: 5-3 | new rating: 1438 | ||
| Grand Prix Hanover 2009 (extended) | starting rating: 1371 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 76 | Schulz, Michael (1481) | Won 2-1 | +201391 |
| 2extended | 35 | Wolter, Christoph (1519) | Won 2-0 | +201411 |
| 3extended | 78 | Porostly, Petr (1495) | Lost 0-2 | -161395 |
| 4extended | 128 | Pakka, Esko (1537) | Won 0-0 | +201415 |
| 5extended | 53 | Altensen, Tim (1538) | Lost 1-2 | -151400 |
| 6extended | 126 | van Rijn, Frank (1443) | Lost 1-2 | -181382 |
| top | average opponent: 1502record: 3-3 | new rating: 1382 | ||
| Grand Prix Vienna 2008 (extended) | starting rating: 1379 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 41 | Moser, Florian (1500) | Won 2-1 | +201399 |
| 2extended | 63 | Gerecke, Piet (1522) | Draw 0-0 | +21401 |
| 3extended | 94 | Wurmitzer, Bernhard (1532) | Lost 0-2 | -151386 |
| 4extended | 188 | Artner, Gerald (1566) | Lost 0-2 | -151371 |
| top | average opponent: 1530record: 1-2-1 | new rating: 1371 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1390 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 30 | Janura, Peter (1506) | Won 2-0 | +201410 |
| 2sealed | 153 | Kreuz, Alexander (1574) | Lost 1-2 | -151395 |
| 3sealed | 141 | Strobl, Frank (1500) | Lost 0-2 | -161379 |
| top | average opponent: 1527record: 1-2 | new rating: 1379 | ||
| Grand Prix Strasbourg 2007 (Time Spiral block) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 63 | Grouiller, Brian (1538) | Lost 0-2 | -171421 |
| 5block | 57 | Cottin, Gregory (1550) | Lost 1-2 | -151406 |
| 6block | 152 | Stephane, Valier (1522) | Lost 1-2 | -161390 |
| top | average opponent: 1537record: 0-3 | new rating: 1390 | ||
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Goerke, Jan-peter (1492) | Won 2-1 | +191466 |
| 2sealed | 68 | Liederbach, Florian (1504) | Won 2-0 | +191485 |
| 3sealed | 59 | Potyka, Alfred (1536) | Lost 0-2 | -171468 |
| 4sealed | 68 | Grygar, Jan (1530) | Lost 0-2 | -171451 |
| 5sealed | 145 | Gilg, Michael (1493) | Won 2-1 | +191470 |
| 6sealed | 122 | Fromm, Felix (1641) | Lost 0-2 | -151455 |
| 7sealed | 119 | Kruck, Christian (1504) | Lost 1-2 | -171438 |
| top | average opponent: 1528record: 3-4 | new rating: 1438 | ||
| Grand Prix Leipzig 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 19 | Hoehn, Christian (1573) | Lost 0-2 | -171483 |
| 2sealed | 177 | Fischer, Sebastian (1484) | Lost 0-2 | -181465 |
| 3sealed | 195 | Schulte, Oliver (1464) | Lost 1-2 | -181447 |
| 4sealed | 211 | Zemke, Robert (1446) | Lost 1-2 | -181429 |
| 5sealed | 197 | Weinhold, Jan (1431) | Won 2-0 | +181447 |
| top | average opponent: 1480record: 1-4 | new rating: 1447 | ||