Stadium: Court 1 Round: 26 Ground: Clay
| ITF Austria F2 | 2018/07/09 09:00 | Winkler, Georg v Matteo De Vincentis | 5-7,7-6,6-2 |
| ITF Austria F2 | 2018/07/08 09:15 | Winkler, Georg v Elio Jose Ribeiro Lago | 6-3,6-0 |
| ITF Austria F2 | 2018/07/07 15:00 | Winkler, Georg v Tomas, Aleksandar | 6-2,6-3 |
| ITF Turkey F21 | 2018/06/01 09:55 | Heyman, Christopher v Winkler, Georg | 3-6,6-4,6-3 |
| ITF Turkey F21 | 2018/05/31 07:30 | Patino, Luis v Winkler, Georg | 6-4,5-7,3-6 |
| ITF Turkey F21 | 2018/05/30 09:00 | Winkler, Georg v Zaitcev, Anton | 7-5,6-2 |
| ITF Italy F7 Qual | 2018/04/09 12:30 | Facundo Juarez v Winkler, Georg | 6-3,6-2 |
| ITF Italy F7 Qual | 2018/04/08 13:30 | Loccisano, Mike v Winkler, Georg | 4-6,4-6 |
| ITF Austria F1 | 2018/07/04 11:10 | Haim, Matthias v Ollert, Lukas | 6-4,6-3 |
| ITF Austria F1 | 2018/07/02 11:10 | Ollert, Lukas v Martins Rocens | 6-1,6-1 |
| ITF Tunisia F25 | 2018/06/26 10:15 | Ollert, Lukas v Gabi Adrian Boitan | 1-6,1-6 |
| ITF Italy F15 | 2018/06/20 18:00 | Ollert, Lukas v Turchetti, Nicolo | 6-3,1-6,5-7 |
| ITF Sweden F2 | 2018/05/17 12:35 | Ollert, Lukas v Alexander Ritschard | 1-6,1-6 |
| ITF Sweden F2 | 2018/05/16 10:15 | Ollert, Lukas v Jonas Trinker | 6-1,6-4 |
| ITF Sweden F2 | 2018/05/15 11:40 | Ollert, Lukas v Nick Chappell | 6-2,6-7,7-5 |
| Tunisia F17, Singles Qualifying | 2018/05/02 10:40 | Ibraimi, Mustafa v Ollert, Lukas | 6-3,6-4 |