Janssen, Kees
Current rating: 1547
Record: 37-34-3
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 208 | Boelsmand, Jeppe (1454) | Lost 0-2 | -191476 |
| 2sealed | 297 | Peeters, Heikki (1415) | Lost 0-2 | -191457 |
| 3sealed | 356 | Borgehynck, Matthias (1411) | Won 2-0 | +171474 |
| 4sealed | 303 | Estelberger, Christopher (1484) | Won 2-0 | +181492 |
| 5sealed | 253 | Ahrend, Sebastian (1498) | Won 2-0 | +191511 |
| 6sealed | 197 | Garthe, Tobias (1518) | Won 2-1 | +181529 |
| 7sealed | 153 | Brosemann, Sascha (1542) | Won 2-0 | +181547 |
| top | average opponent: 1475record: 5-2 | new rating: 1547 | ||
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 121 | Van Hoorn, Rene (1500) | Lost 1-2 | -191496 |
| 2sealed | 180 | Van der Auwera, Bert (1512) | Won 2-1 | +191515 |
| 3sealed | 157 | Pyzio, Radoslaw (1422) | Lost 0-2 | -201495 |
| top | average opponent: 1478record: 1-2 | new rating: 1495 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 38 | Vornhusen, Gunnar (1423) | Draw 1-1 | -11516 |
| 2sealed | 136 | Fonteyne, Aron (1534) | Won 2-0 | +181534 |
| 3sealed | 85 | Joska, Tomas (1598) | Lost 1-2 | -171517 |
| 4sealed | 160 | Brzegowy, Adrian (1386) | Lost 1-2 | -201497 |
| 5sealed | 177 | Delvigne, Emmanuel (1485) | Won 2-0 | +181515 |
| top | average opponent: 1485record: 2-2-1 | new rating: 1515 | ||
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 304 | Boladz, Maximilian (1499) | Won 2-1 | +171555 |
| 2sealed | 16 | Maij, Rosario (1522) | Won 2-1 | +171572 |
| 3sealed | 37 | Josupeit, Frank (1595) | Lost 0-2 | -171555 |
| 4sealed | 308 | Tisu, Stefan Alexandru (1519) | Lost 1-2 | -191536 |
| 5sealed | 282 | Hanisch, Daniel (1500) | Lost 0-2 | -191517 |
| top | average opponent: 1527record: 2-3 | new rating: 1517 | ||
| Grand Prix Gothenburg 2003 (MRD limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Nystrom, Per (1500) | Won 2-1 | +171557 |
| 2sealed | 102 | Westergren, Fredrik (1519) | Won 2-1 | +181575 |
| 3sealed | 18 | Andersson, Kenny (1535) | Lost 0-2 | -191556 |
| 4sealed | 82 | Oksman, Dan (1518) | Won 2-0 | +171573 |
| 5sealed | 46 | Enberg, Staffan (1595) | Lost 0-2 | -171556 |
| 6sealed | 102 | Appel, Rene (1685) | Lost 0-2 | -161540 |
| 7sealed | 111 | Belogrivs, Imants (1469) | Lost 0-2 | -191521 |
| 8sealed | 100 | Hall, Felix (1468) | Won 2-1 | +171538 |
| top | average opponent: 1536record: 4-4 | new rating: 1538 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 75 | Vesely, Tomas (1500) | Won 2-0 | +181544 |
| 2sealed | 222 | Hanton, Oldrich (1525) | Won 2-1 | +171561 |
| 3sealed | 29 | Trucza, Istvan (1566) | Won 2-0 | +181579 |
| 4sealed | 88 | Herman, Jiri (1553) | Won 2-1 | +181597 |
| 5sealed | 19 | Grimm, Martin (1648) | Lost 0-2 | -171580 |
| 6sealed | 107 | Matousek, Kamil (1470) | Won 2-0 | +161596 |
| 7sealed | 17 | Dahl, Aleksander (1521) | Lost 1-2 | -201576 |
| 8sealed | 72 | Rubelj, Ivan (1579) | Lost 0-2 | -181558 |
| 9sealed | 99 | Kuben, Petr (1533) | Lost 1-2 | -181540 |
| top | average opponent: 1544record: 5-4 | new rating: 1540 | ||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Valderrama, Ivan (1500) | Won 2-0 | +181507 |
| 2sealed | 82 | Matilde, David (1471) | Lost 0-2 | -191488 |
| 3sealed | 164 | Carreira, Guilherme (1535) | Won 2-1 | +191507 |
| 4sealed | 212 | Perez, Alvaro (1518) | Won 2-0 | +181525 |
| 5sealed | 120 | Palencia Lasheras, Enrique (1472) | Lost 0-2 | -191506 |
| 6sealed | 120 | Villacanas Garrudo, Jesus (1517) | Won 2-1 | +191525 |
| 7sealed | 93 | Moreno Rodriguez, Antonio (1536) | Won 2-0 | +181543 |
| 8sealed | 43 | Micol Mora, Antonio (1614) | Lost 0-2 | -171526 |
| top | average opponent: 1520record: 5-3 | new rating: 1526 | ||
| Grand Prix Naples 2002 (TOR limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 27 | Fear, Edward (1755) | Lost 0-2 | -141489 |
| 2sealed | 98 | Pipicelli, Fabio (1481) | Lost 0-2 | -181471 |
| 3sealed | 116 | Gianmoleo, Roberto (1464) | Won 2-0 | +181489 |
| 4sealed | 98 | Cozzolino, Vittorio (1482) | Lost 1-2 | -181471 |
| 5sealed | 118 | Minieri, Vincenzo (1468) | Lost 0-2 | -181453 |
| 6sealed | 122 | Pignalosa, Diego (1446) | Won 2-0 | +181471 |
| 7sealed | 97 | Talia, Mattia (1464) | Won 2-1 | +181489 |
| top | average opponent: 1509record: 3-4 | new rating: 1489 | ||
| Grand Prix Antwerp 2002 (TOR limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Steinbock, Kai (1500) | Lost 1-2 | -181481 |
| 2sealed | 186 | Gunsing, Bernhard (1482) | Won 2-0 | +181499 |
| 3sealed | 202 | Kievits, Ron (1500) | Won 2-1 | +181517 |
| 4sealed | 118 | Nitter, Eivind (1703) | Won 2-0 | +221539 |
| 5sealed | 91 | Rosemann, Cornelius (1537) | Lost 1-2 | -191520 |
| 6sealed | 120 | Schweneke, Philipp (1545) | Lost 0-2 | -171503 |
| top | average opponent: 1545record: 3-3 | new rating: 1503 | ||
| Grand Prix Heidelberg 2002 (TOR limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 277 | McAdams, Stephen (1500) | Won 2-0 | +171535 |
| 2sealed | 116 | Schramm, Markus (1548) | Won 2-0 | +191554 |
| 3sealed | 39 | Neumaier, Thomas (1572) | Draw 1-1 | 01554 |
| 4sealed | 93 | Utz, Kai (1537) | Lost 0-2 | -181536 |
| 5sealed | 183 | Weinkath, Michael (1519) | Lost 1-2 | -191517 |
| 6sealed | 212 | Rottger, Daniel (1501) | Lost 0-2 | -181499 |
| top | average opponent: 1530record: 2-3-1 | new rating: 1499 | ||
| Grand Prix London 2001 (Invasion block) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 139 | Caumes, Benjamin (1519) | Lost 0-2 | -191537 |
| 2block | 216 | van Leeuwen, Ricky (1462) | Lost 0-2 | -191518 |
| top | average opponent: 1490record: 0-2 | new rating: 1518 | ||
| Grand Prix Amsterdam 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Bardet, Jean-Michel (1555) | Won 2-0 | +191519 |
| 2sealed | 10 | Van Cauwenberge, Jochen (1537) | Lost 0-2 | -181501 |
| 3sealed | 212 | Wolkoff, Nikolaj (1499) | Draw 1-1 | 01501 |
| 4sealed | 207 | Micheli, Marco (1482) | Won 2-0 | +181519 |
| 5sealed | 136 | Tokgozoglu, Can (1518) | Won 2-0 | +181537 |
| 6sealed | 86 | Hatto, Steve (1503) | Won 2-1 | +171554 |
| 7sealed | 49 | Debard, Michael (1653) | Lost 1-2 | -161538 |
| 8sealed | 88 | Tregaro, Thierry (1522) | Won 2-0 | +181556 |
| top | average opponent: 1534record: 5-2-1 | new rating: 1556 | ||