Round: 26 Ground: Hardcourt indoor
| ITF M25 - Sierre - HD | 2021/09/03 16:55 | Paul/Steinegger v Bertola/Castelnuovo | 6-3,6-2 |
| ITF M25 - Sierre - HD | 2021/09/02 11:55 | Paul/Steinegger v Langmo/Potenza | 6-4,6-4 |
| ITF M25 - Sierre - HD | 2021/09/01 16:20 | Paul/Steinegger v Arnaldi/Maggioli | 6-4,6-2 |
| ITF M25 - Klosters - HD | 2021/06/22 13:40 | Riedi/Stricker v Paul/Steinegger | 7-5,6-2 |
| ITF M15 - Sint-Petersburg - HD | 2021/04/16 10:10 | Paul/Steinegger v Cozbinov/Freund | 6-4,3-6,9-11 |
| ITF M15 - Sint-Petersburg - HD | 2021/04/15 12:05 | Borisiouk/Liaonenka v Paul/Steinegger | 3-6,6-4,7-10 |
| ITF M15 - Sint-Petersburg - HD | 2021/04/09 12:20 | Paul/Steinegger v Cozbinov/Freund | 6-7,2-6 |
| ITF M15 - Sint-Petersburg - HD | 2021/04/08 11:00 | Paul/Steinegger v Binda/Minin | 6-0,6-2 |