By surface
| Surface | Frederik Nielsen | Karim Mohamed Maamoun |
|---|---|---|
| Hard | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2018-04-07 | ATP | Davis Cup G2 R2: EGY vs DEN | Round Robin | Hard | Karim Mohamed Maamoun | 6-3 | 3-6 | 6-76 |