Stadium: Court 2 Round: 27 Ground: Hardcourt indoor
| ITF M15 St Petersburg MD | 2021/04/07 10:55 | Altuna/Kravchuk v Paul/Steinegger | 6-3,3-6,6-10 |
| ITF M25 Biel MD | 2021/04/02 15:05 | Erler/Neuchrist v Paul/Steinegger | 6-3,4-6,10-2 |
| ITF M25 Biel MD | 2021/04/02 13:30 | Paul/Steinegger v Lehecka/Vrbensky | 7-5,6-4 |
| ITF M25 Biel MD | 2021/03/31 17:15 | Paul/Steinegger v Martinez/Nikles | 6-4,6-3 |
| ITF M25 Trimbach MD | 2021/03/13 15:15 | Paul/Steinegger v Ejupovic/Erler | 6-3,7-5 |
| ITF M25 Trimbach MD | 2021/03/12 14:35 | Brunold/Sebesta v Paul/Steinegger | 0-6,2-6 |
| ITF M25 Trimbach MD | 2021/03/11 16:00 | Paul/Steinegger v Lanz/Schaer | 4-6,6-4,10-5 |
| ITF M25 Trimbach MD | 2021/03/10 15:00 | Paul/Steinegger v Lane/Moeller | 7-5,6-7,11-9 |
| ITF M15 St Petersburg MD | 2021/04/07 11:30 | Binda/Minin v Ivanov/Ratniuk | 4-6,7-5,10-5 |