Germany: Marburg - Doubles - Main |
| Quarter-finals | Kern R./Lenz J. | Laaksonen H./Margaroli L. | 0:2 (63:7, 2:6) | details | 05.07.2018 |
| 1/8-finals | Kern R./Lenz J. | Bednarek T./Mergea F. | 2:1 (7:5, 2:6, 10:5) | details | 03.07.2018 |
United Kingdom: Glasgow - Doubles - Main |
| 1/8-finals | Milojevic N./Vanni L. | Brands D./Kern R. | 2:1 (3:6, 6:3, 10:4) | details | 02.05.2018 |
Turkey: Izmir - Doubles - Main |
| Quarter-finals | Kern R./Sieber M. | Margaroli L./Miedler L. | 1:2 (7:5, 4:6, 7:10) | details | 20.09.2017 |
| 1/8-finals | Altuna T./Petrovic D. | Kern R./Sieber M. | 0:2 (4:6, 4:6) | details | 19.09.2017 |
Turkey: Istanbul - Doubles - Main |
| Quarter-finals | Kern R./Sieber M. | Nedunchezhiyan J./Sharan D. | 1:2 (6:4, 0:6, 8:10) | details | 14.09.2017 |
| 1/8-finals | Kern R./Sieber M. | Maamoun K.M./Ortega-Olmedo R. | 2:0 (6:1, 6:4) | details | 12.09.2017 |
Netherlands: Alphen - Doubles - Main |
| 1/8-finals | Krawietz K./Satschko A. | Kern R./Schonenberg T. | 2:1 (6:1, 4:6, 10:3) | details | 06.09.2017 |