Stadium: S+S Court Round: 25 Ground: Clay
| ITF M25 The Hague | 2021/06/27 08:00 | Marvin Netuschil v Alec Deckers | 6-4,6-2 |
| ITF M15 Bergamo | 2021/06/25 10:00 | Federico Arnaboldi v Marvin Netuschil | 7-6,6-4 |
| ITF M15 Bergamo | 2021/06/24 08:00 | Marvin Netuschil v Daniele Capecchi | 6-1,6-0 |
| ITF M15 Bergamo | 2021/06/23 09:00 | Andrea Basso v Marvin Netuschil | 6-1,2-6,2-6 |
| ITF M15 Troisdorf | 2021/05/13 13:25 | Marvin Netuschil v Sebastian Fanselow | 2-6,1-6 |
| ITF M15 Troisdorf | 2021/05/12 13:30 | Marvin Netuschil v Amaury Raynel | 6-1,6-3 |
| ITF M15 LPD Gran Canaria | 2021/04/28 09:55 | Johan Nikles v Marvin Netuschil | 6-3,6-2 |
| ITF M25 Meerbusch | 2021/04/14 10:30 | Alexander Erler v Marvin Netuschil | 6-3,6-2 |
| ITF M25 Santo Domingo | 2021/06/03 13:00 | Alejandro Gonzalez v Blaise Bicknell | 6-3,6-7,7-5 |
| ITF M25 Pensacola | 2021/05/21 14:30 | Alejandro Gonzalez v Patrick Kypson | 4-6,0-6 |
| ITF M25 Pensacola | 2021/05/20 14:25 | Juan A H Serrano v Alejandro Gonzalez | 3-6,2-6 |
| ITF M25 Pensacola | 2021/05/19 19:35 | John Bernard v Alejandro Gonzalez | 2-6,1-6 |
| Challenger Salinas 2 | 2021/04/26 19:40 | Tak Khunn Wang v Alejandro Gonzalez | 6-2,3-6,6-2 |
| Challenger Salinas | 2021/04/19 14:30 | Alejandro Gonzalez v Tak Khunn Wang | 2-6,6-1,0-6 |
| Challenger Salinas | 2021/04/18 19:10 | Alejandro Gonzalez v Jorge Panta | 6-0,6-1 |
| ATP Acapulco | 2021/03/15 00:00 | Denis Kudla v Alejandro Gonzalez | 6-3,6-2 |