Stadium: Court 5 Round: 54 Ground: Clay
| ITF M25 Marburg | 2021/07/05 09:30 | Kirill Kivattsev v Andres Gabriel Ciurletti | 6-7,6-7 |
| ITF M15 Troisdorf | 2021/05/10 11:00 | Andres Gabriel Ciurletti v Timo Stodder | 3-6,2-6 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Fred Olivier Schommer v Andres Gabriel Ciurletti | 0-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/04/06 07:30 | Lukas Krainer v Andres Gabriel Ciurletti | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2021/04/05 07:30 | Emmanuel Luria v Andres Gabriel Ciurletti | 1-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/28 07:00 | Andres Gabriel Ciurletti v Beibit Zhukayev | 6-4,3-6,6-10 |
| ITF M15 Sharm El Sheikh | 2021/03/24 12:00 | Andres Gabriel Ciurletti v Yu Hsiou Hsu | 3-6,0-6 |
| ITF M15 Sharm El Sheikh | 2021/03/23 09:10 | Tim Handel v Andres Gabriel Ciurletti | 6-7,4-6 |
| ITF M25 Marburg | 2021/07/05 10:25 | Liam Gavrielides v Yannik Steinegger | 6-1,3-6,9-11 |
| ITF M25 Klosters | 2021/06/23 07:00 | Alexander Erler v Yannik Steinegger | 6-7,6-2,6-1 |
| ITF M25 Klosters | 2021/06/21 07:00 | Davide Tortora v Yannik Steinegger | 5-7,3-6 |
| ITF M25 Klosters | 2021/06/20 08:40 | Johann Lars v Yannik Steinegger | 2-6,4-6 |
| ITF M15 Gaiba | 2021/06/08 11:20 | Giorgio Ricca v Yannik Steinegger | 6-3,5-7,10-7 |
| ITF M15 Gaiba | 2021/06/07 15:25 | Giovanni Agostinetto v Yannik Steinegger | 4-6,3-6 |
| ITF M15 Helsinki | 2021/06/03 07:00 | Yannik Steinegger v Bruno Kuzuhara | 2-6,6-2,3-6 |
| ITF M15 Helsinki | 2021/06/02 11:30 | Mikhail Minakov v Yannik Steinegger | 4-6,1-6 |