Stadium: Court 2 Round: 54 Ground: Clay
| ITF M25 Klosters | 2021/06/22 09:20 | Gian Luca Tanner v Lenny Hampel | 5-7,4-6 |
| ITF M25 Klosters | 2021/06/21 06:50 | Daniel Cukierman v Gian Luca Tanner | 6-3,6-4 |
| ITF M25 Klosters | 2021/06/20 07:00 | Gian Luca Tanner v Maik Steiner | 6-4,6-2 |
| ITF M15 Antalya | 2021/06/07 07:00 | Francisco Comesana v Gian Luca Tanner | 6-1,6-2 |
| ITF M15 Antalya | 2021/06/06 07:30 | Gian Luca Tanner v Caspar Schuetze | 1-6,6-4,10-4 |
| ITF M15 Antalya | 2021/05/30 07:30 | Antonio Caruso v Gian Luca Tanner | 6-3,6-4 |
| ITF M15 Troisdorf | 2021/05/11 08:00 | Luke Johnson v Gian Luca Tanner | 6-7,7-5,11-9 |
| ITF M15 Troisdorf | 2021/05/10 08:00 | Gian Luca Tanner v Paul Woerner | 6-4,6-7,10-8 |