France: Metz - Doubles - Main |
| Quarter-finals | Fleming C./Skupski K. | Wassen R./Kas C. | 2:1 (6:3, 3:6, 7:6) | details | 24.09.2009 |
| 1/8-finals | Allegro Y./Martin D. | Kas C./Wassen R. | 1:2 (3:6, 7:6, 6:7) | details | 23.09.2009 |
France: French Open - Doubles - Main |
| 1/8-finals | Nestor D./Zimonjic N. | Kas C./Wassen R. | 2:0 (6:0, 6:3) | details | 31.05.2009 |
| 1/16-finals | Ferrer D./Gimeno-Traver D. | Kas C./Wassen R. | 2:0 RET. | details | 30.05.2009 |
| 1/32-finals | Kas C./Wassen R. | Damm M./Lindstedt R. | 2:1 (6:7, 7:6, 7:5) | details | 27.05.2009 |
Spain: Madrid - Doubles - Main |
| 1/16-finals | Lopez M./Ramirez Hidalgo R. | Kas C./Wassen R. | 2:1 (7:6, 1:6, 7:6) | details | 12.05.2009 |
Morocco: Casablanca - Doubles - Main |
| Semi-finals | Kas C./Wassen R. | Aspelin S./Hanley P. | 0:2 (5:7, 2:6) | details | 09.04.2009 |
| Quarter-finals | Gil F./Tecau H. | Kas C./Wassen R. | 0:2 (6:7, 2:6) | details | 08.04.2009 |
| 1/8-finals | Allegro Y./Clement A. | Wassen R./Kas C. | 0:2 (6:7, 3:6) | details | 07.04.2009 |
Croatia: Zagreb - Doubles - Main |
| Final | Damm M./Lindstedt R. | Kas C./Wassen R. | 2:0 (6:4, 6:3) | details | 08.02.2009 |
| Semi-finals | Wassen R./Kas C. | Aspelin S./Vizner P. | 2:1 (6:2, 2:6, 7:6) | details | 06.02.2009 |
| Quarter-finals | Skugor F./Topic J. | Kas C./Wassen R. | 1:2 (3:6, 6:3, 6:7) | details | 04.02.2009 |
| 1/8-finals | Cilic M./Zovko L. | Wassen R./Kas C. | 0:2 (4:6, 6:7) | details | 03.02.2009 |
Australia: Australian Open - Doubles - Main |
| 1/16-finals | Ball C./Guccione C. | Kas C./Wassen R. | 2:1 (7:6, 3:6, 6:3) | details | 23.01.2009 |
| 1/32-finals | Haggard C./Querrey S. | Kas C./Wassen R. | 0:2 (4:6, 5:7) | details | 21.01.2009 |
New Zealand: Auckland - Doubles - Main |
| 1/8-finals | Hanley P./Kerr J. | Wassen R./Kas C. | 2:0 (7:6, 7:5) | details | 12.01.2009 |
Romania: Bucharest - Doubles - Main |
| 1/8-finals | Andujar P./Navarro I. | Kas C./Wassen R. | 2:0 (6:2, 6:4) | details | 10.09.2008 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/8-finals | Petzschner P./Peya A. | Kas C./Wassen R. | 3:1 (6:7, 7:6, 6:2, 6:4) | details | 28.06.2008 |
| 1/16-finals | Arnold-Ker L./Horna L. | Kas C./Wassen R. | 0:0 WO. | details | 26.06.2008 |
| 1/32-finals | Hernandez Perez O./Montanes A. | Kas C./Wassen R. | 0:3 (5:7, 3:6, 2:6) | details | 26.06.2008 |
France: French Open - Doubles - Main |
| 1/16-finals | Isner J./Querrey S. | Kas C./Wassen R. | 1:1 RET. (6:7, 7:5, 3:0) | details | 31.05.2008 |
| 1/32-finals | Eysseric J./Mannarino A. | Kas C./Wassen R. | 0:2 (2:6, 1:6) | details | 30.05.2008 |
Germany: Hamburg - Doubles - Main |
| 1/16-finals | Kas C./Wassen R. | Fyrstenberg M./Matkowski M. | 0:2 (5:7, 1:6) | details | 13.05.2008 |
Germany: Munich - Doubles - Main |
| Quarter-finals | Gicquel M./Vliegen K. | Kas C./Wassen R. | 2:0 (6:4, 6:3) | details | 01.05.2008 |
| 1/8-finals | Becker B./Petzschner P. | Kas C./Wassen R. | 0:2 (6:7, 2:6) | details | 01.05.2008 |
Spain: Valencia - Doubles - Main |
| Quarter-finals | Kas C./Wassen R. | Parrott T./Polasek F. | 1:2 (6:7, 6:0, 6:7) | details | 17.04.2008 |
| 1/8-finals | Kas C./Wassen R. | Huss S./Hutchins R. | 2:0 (6:3, 6:2) | details | 14.04.2008 |
USA: Miami - Doubles - Main |
| 1/8-finals | Hanley P./Paes L. | Kas C./Wassen R. | 2:1 (6:4, 4:6, 7:6) | details | 31.03.2008 |
| 1/16-finals | Friedl L./Skoch D. | Kas C./Wassen R. | 1:2 (6:2, 4:6, 6:7) | details | 28.03.2008 |
USA: Indian Wells - Doubles - Main |
| 1/16-finals | Kas C./Wassen R. | Bhupathi M./Knowles M. | 0:2 (3:6, 6:7) | details | 17.03.2008 |
Croatia: Zagreb - Doubles - Main |
| Final | Hanley P./Kerr J. | Kas C./Wassen R. | 2:1 (6:3, 3:6, 7:6) | details | 01.03.2008 |
Netherlands: Rotterdam - Doubles - Main |
| 1/8-finals | Kas C./Wassen R. | Berdych T./Tursunov D. | 0:2 (2:6, 4:6) | details | 18.02.2008 |
France: Marseille - Doubles - Main |
| 1/8-finals | Damm M./Vizner P. | Kas C./Wassen R. | 2:0 (7:6, 6:4) | details | 14.02.2008 |
Australia: Australian Open - Doubles - Main |
| 1/8-finals | Kas C./Wassen R. | Nestor D./Zimonjic N. | 0:2 (4:6, 4:6) | details | 20.01.2008 |
| 1/16-finals | Kas C./Wassen R. | Lee H./Serra F. | 2:0 (6:1, 6:2) | details | 18.01.2008 |
| 1/32-finals | Kas C./Wassen R. | Groth S./Sirianni J. | 2:1 (6:3, 6:7, 6:3) | details | 17.01.2008 |
New Zealand: Auckland - Doubles - Main |
| 1/8-finals | Kas C./Wassen R. | Coetzee J./Levinsky J. | 0:2 (1:6, 4:6) | details | 08.01.2008 |
Qatar: Doha - Doubles - Main |
| Semi-finals | Kas C./Wassen R. | Kohlschreiber P./Skoch D. | 0:2 (4:6, 5:7) | details | 03.01.2008 |
| Quarter-finals | Kas C./Wassen R. | Santoro F./Wawrinka S. | 2:0 (6:3, 6:2) | details | 02.01.2008 |
| 1/8-finals | Andreev I./Calleri A. | Kas C./Wassen R. | 0:2 (1:6, 4:6) | details | 31.12.2007 |