 Italy: Como - Doubles - Main |
|---|
| 1/8-finals | Greul S./Knittel B. | Motti A./Raja P. | CAN. | details | 28.08.2013 |
 Germany: Oberstaufen - Doubles - Main |
|---|
| 1/8-finals | Fransen S./Sitak A. | Greul S./Knittel B. | 2:0 (7:5, 6:1) | details | 24.07.2013 |
| Germany: Furth - Doubles - Main |
|---|
| 1/8-finals | Marx P./Mergea F. | Greul S./Knittel B. | CAN. | details | 05.06.2013 |
 Turkey: Mersin - Doubles - Main |
|---|
| Quarter-finals | Greul S./Knittel B. | Motti A./Vagnozzi S. | 1:2 (4:6, 6:3, 9:11) | details | 10.04.2013 |
| 1/8-finals | Cacic N./Lajovic D. | Greul S./Knittel B. | 1:2 (4:6, 7:66, 7:10) | details | 08.04.2013 |
 Bosnia and Herzegovina: Sarajevo - Doubles - Main |
|---|
| Semi-finals | Basic M./Brkic T. | Greul S./Knittel B. | 2:0 (7:63, 6:4) | details | 15.03.2013 |
| Quarter-finals | Dzumhur D./Vesely J. | Greul S./Knittel B. | 0:2 (3:6, 1:6) | details | 13.03.2013 |
| 1/8-finals | Greul S./Knittel B. | Korolev E./Motti A. | 2:0 (6:2, 7:5) | details | 11.03.2013 |
 Netherlands: Alphen - Doubles - Main |
|---|
| Final | Junaid R./Stadler S. | Greul S./Knittel B. | 2:1 (4:6, 6:1, 10:5) | details | 09.09.2012 |
| Semi-finals | Greul S./Knittel B. | Mertl J./Michalicka M. | 2:0 (6:3, 6:0) | details | 07.09.2012 |
| Quarter-finals | Greul S./Knittel B. | Gimeno-Traver D./Navarro I. | 2:0 (6:2, 6:1) | details | 06.09.2012 |
| 1/8-finals | Frantzen R./Koolhof W. | Greul S./Knittel B. | 0:2 (3:6, 3:6) | details | 05.09.2012 |
| Italy: Rome 2 - Doubles - Main |
|---|
| 1/8-finals | Greul S./Knittel B. | Menendez-Maceiras A./Trusendi W. | 1:2 (6:2, 2:6, 7:10) | details | 07.05.2012 |
 Poland: Szczecin - Doubles - Main |
|---|
| 1/8-finals | Greul S./Knittel B. | Gawron M./Kapas A. | 0:2 (5:7, 1:6) | details | 12.09.2011 |
| Netherlands: Alphen - Doubles - Main |
|---|
| 1/8-finals | Greul S./Knittel B. | Michalicka M./Vogeli R. | 1:2 (3:6, 6:4, 6:10) | details | 09.09.2011 |
