Stadium: Pista 8 Round: 25 Ground: Clay
| ATP Geneva Qual | 2016/05/15 10:30 | Roberto Ortega-Olmedo v Johan Nikles | 6-2,7-6 |
| ITF M25 Faro | 2021/03/03 09:30 | Johan Nikles v Maxime Hamou | 6-2,6-7,5-7 |
| ITF M15 Grenoble | 2021/02/11 11:20 | Johan Nikles v Arthur Reymond | 6-7,6-3,3-6 |
| ITF M15 Grenoble | 2021/02/09 10:55 | Johan Nikles v Joshua D Karpenschif | 0-6,6-2,6-4 |
| ITF M15 Cairo | 2021/01/22 08:00 | Facundo Diaz Acosta v Johan Nikles | 6-3,6-2 |
| ITF M15 Cairo | 2021/01/21 08:00 | Pol Toledo Bague v Johan Nikles | 4-6,2-6 |
| ITF M15 Cairo | 2021/01/20 09:30 | Bastian Malla v Johan Nikles | 3-6,1-6 |
| ITF M15 Cairo | 2021/01/16 08:30 | Carlos Sanchez Jover v Johan Nikles | 6-4,6-3 |
| ITF M15 Cairo | 2021/01/15 10:05 | Johan Nikles v Simone Roncalli | 6-2,6-2 |
| Challenger Gran Canaria | 2021/03/02 11:35 | Roberto Ortega-Olmedo v Alex Molcan | 3-6,6-7 |
| Challenger Gran Canaria | 2021/02/25 13:20 | Roberto Ortega-Olmedo v Andrea Pellegrino | 4-6,5-7 |
| Challenger Gran Canaria | 2021/02/23 10:00 | Lorenzo Giustino v Roberto Ortega-Olmedo | 6-1,3-6,4-6 |
| ITF M25 Villena | 2021/02/03 15:15 | Antoine Escoffier v Roberto Ortega-Olmedo | 7-5,6-2 |
| ITF M15 Monastir | 2021/01/13 10:05 | Roberto Ortega-Olmedo v Savriyan Danilov | 6-4,6-0 |
| ATP Antalya | 2021/01/06 08:30 | Roberto Ortega-Olmedo v Andrea Vavassori | 5-7,1-6 |
| Challenger Campinas | 2020/12/01 13:00 | Roberto Carballes Baena v Roberto Ortega-Olmedo | 6-4,6-0 |
| Challenger Sao Paulo | 2020/11/23 13:30 | Roberto Ortega-Olmedo v Maxime Janvier | 7-5,5-7,2-6 |