Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Kamen | 2019/06/26 14:10 | Johan Nikles v Maiga, Riccardo | 2-6,5-7 |
| Huelva, Singles Qualifying M-ITF-ESP-12A | 2019/06/11 08:00 | Johan Nikles v March, Antonio Cayetano | 4-6,5-7 |
| Huelva, Singles Qualifying M-ITF-ESP-12A | 2019/06/10 08:00 | Johan Nikles v Okala, Noam | 6-2,6-2 |
| ITF M25 Bacau | 2019/05/29 09:55 | Juan Pablo Varillas v Johan Nikles | 6-2,6-1 |
| ITF M15 Troisdorf | 2019/05/09 08:00 | Netuschil, Marvin v Johan Nikles | 7-6,7-6 |
| ITF M15 Troisdorf | 2019/05/07 10:00 | Rinky Hijikata v Johan Nikles | 1-6,2-6 |
| ITF - M25 Angers | 2019/04/26 15:50 | Hamou, Maxime v Johan Nikles | 6-2,6-2 |
| ITF - M25 Angers | 2019/04/25 09:00 | Johan Nikles v Arthur Reymond | 7-6,7-6 |
| ITF M25 Getxo | 2019/07/09 10:40 | Winkler, Georg v Kotecha, Sheil | 6-2,6-2 |
| ITF M25 Getxo | 2019/07/08 11:00 | Winkler, Georg v Lopez Hernaez, Mikel | 6-3,6-1 |
| Vercelli, Singles Qualifying M-ITF-ITA-08A | 2019/05/07 09:55 | Winkler, Georg v Moroni, Filippo | 5-7,4-6 |
| Vercelli, Singles Qualifying M-ITF-ITA-08A | 2019/05/06 10:50 | Winkler, Georg v Scotti, M. | 6-3,6-4 |
| ITF - M25 Santa Margherita | 2019/05/01 16:30 | Luca Tomasetto v Winkler, Georg | 6-2,6-2 |
| ITF - M25 Santa Margherita | 2019/04/23 12:00 | Prechtel, Sebastian v Winkler, Georg | 6-2,6-3 |
| ITF - M25 Santa Margherita | 2019/04/22 12:00 | Dambrosi, Giacomo v Winkler, Georg | 3-6,1-6 |
| ITF - M15 Antalya | 2019/04/02 07:00 | Winkler, Georg v Damien Wenger | 3-6,2-6 |