Kook, Benjamin
Current rating: 1477
Record: 12-14
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 651 | van Rijn, Frank (1512) | Lost 1-2 | -181453 |
| 2sealed | 778 | Fallais, Quentin (1482) | Won 2-0 | +191472 |
| 3sealed | 673 | Sander, Andreas (1605) | Won 2-1 | +201492 |
| 4sealed | 753 | Lorenz, Konstantin (1667) | Lost 0-2 | -151477 |
| top | average opponent: 1567record: 2-2 | new rating: 1477 | ||
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 185 | Diekjobst, Lukas (1625) | Lost 1-2 | -161491 |
| 2sealed | 156 | Matzen, Ingmar (1500) | Lost 1-2 | -181473 |
| 3sealed | 204 | Alt, Florian (1463) | Won 2-0 | +181491 |
| 4sealed | 197 | Blieck, Benny (1352) | Lost 0-2 | -201471 |
| top | average opponent: 1485record: 1-3 | new rating: 1471 | ||
| Grand Prix Copenhagen 2005 (extended) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 83 | Hogh, Jonas (1482) | Lost 0-2 | -191491 |
| 2extended | 119 | Naumann, Thomas (1486) | Lost 0-2 | -181473 |
| 3extended | 141 | Scubring, Malte (1464) | Won 2-0 | +181491 |
| 4extended | 143 | Nysar, Maik (1416) | Lost 0-2 | -191472 |
| 5extended | 145 | Juhl, Daniel Dahl (1467) | Won 2-0 | +181490 |
| 6extended | 122 | Borup, Paw (1389) | Won 2-0 | +161506 |
| 7extended | 91 | Birch, Lars (1578) | Lost 1-2 | -171489 |
| 8extended | 90 | Jorgensen, Anders Masannek (1483) | Won 2-1 | +181507 |
| top | average opponent: 1470record: 4-4 | new rating: 1507 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 67 | Pech, Rene (1646) | Lost 0-2 | -161510 |
| top | record: 0-1 | new rating: 1510 | ||
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Pick, Tobias (1560) | Lost 0-2 | -171483 |
| 2sealed | 411 | Zwetzich, Arthur (1484) | Won 2-0 | +181501 |
| 3sealed | 268 | Todorovic, Borut (1552) | Lost 1-2 | -171484 |
| 4sealed | 426 | Zniszczol, Jacek (1450) | Won 2-1 | +171501 |
| 5sealed | 295 | Santos, Nestor (1538) | Won 2-1 | +191520 |
| 6sealed | 216 | Emmig, Martin (1466) | Won 2-0 | +171537 |
| 7sealed | 155 | Oomens, Wessel (1652) | Won 2-1 | +201557 |
| 8sealed | 89 | Wright, Stuart (1730) | Lost 0-2 | -151542 |
| 9sealed | 112 | Heeswijk, Roel (1611) | Lost 1-2 | -161526 |
| top | average opponent: 1560record: 5-4 | new rating: 1526 | ||