Stadium: Court 4 Round: 44 Ground: Clay
| ITF M25 Poznan | 2020/08/25 10:40 | Piotr Grynkowski v Erhardt, Gaston | 6-2,6-2 |
| ITF M25 Poznan | 2020/08/24 12:30 | Leyton Rivera v Erhardt, Gaston | 5-7,4-6 |
| ITF M25 Poznan | 2020/08/23 11:00 | Louis Allen v Erhardt, Gaston | 1-6,1-6 |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 2020/03/02 13:00 | Erhardt, Gaston v Uryson, Nicolas | 2-6,1-6 |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 2020/03/01 13:00 | Lema, Nicolas Agustin v Erhardt, Gaston | 3-6,2-6 |
| ITF M25 Rio Cuarto | 2020/02/24 15:00 | Erhardt, Gaston v Leonardo Aboian | 6-4,4-6,3-10 |
| ITF M25 Rio Cuarto | 2020/02/23 13:00 | Bianchi, Nicolas v Erhardt, Gaston | 6-3,3-6,8-10 |
| ITF - M25 Punta del Este | 2020/02/18 20:10 | Galarza, Juan Ignacio v Erhardt, Gaston | 6-2,2-6,6-3 |
| Swiss Tennis Masters | 2020/07/08 15:15 | Marc-Andrea Huesler v Johan Nikles | 6-2,6-2 |
| Swiss Tennis Masters | 2020/07/08 10:00 | Antoine Bellier v Johan Nikles | 3-6,5-7 |
| Swiss Tennis Masters | 2020/07/07 12:30 | Yannik Steinegger v Johan Nikles | 3-6,2-6 |
| Swiss Tennis Masters | 2020/07/05 12:30 | Johan Nikles v Baltensperger, Raphael | 6-1,6-3 |
| ITF - M25 Naples | 2020/02/13 17:10 | Gonzalez, Alejandro v Johan Nikles | 6-4,2-6,6-1 |
| ITF - M25 Naples | 2020/02/11 16:50 | Johan Nikles v Nicolas Mejia | 6-2,6-4 |
| Palm Coast, Singles M-ITF-USA-05A | 2020/02/06 15:00 | Johan Nikles v Podzus, Martins | 4-6,3-6 |
| Palm Coast, Singles M-ITF-USA-05A | 2020/02/04 17:55 | Esteve Lobato, Eduard v Johan Nikles | 7-5,5-7,4-6 |