Stadium: COURT 3 Round: 25 Ground: Clay
| Challenger Segovia | 2018/07/31 08:00 | Miguel Semmler v Andrea Arnaboldi | 6-4,5-7,5-7 |
| ITF Spain F20 | 2018/07/25 16:10 | Alberto Romero De Avila Senise v Miguel Semmler | 6-7,6-2,6-3 |
| ITF Spain F20 | 2018/07/23 16:35 | Miguel Semmler v Omar Salman | 6-2,6-4 |
| ITF Spain F19 | 2018/07/18 16:00 | Alvaro Lopez San Martin v Miguel Semmler | 3-6,7-6,7-5 |
| ITF Spain F18 | 2018/07/10 15:10 | Miguel Semmler v Pedro Cachin | 2-6,1-6 |
| ITF France F10 | 2018/06/19 13:10 | Miguel Semmler v Matteo Martineau | 4-6,4-6 |
| ATP Madrid Qual | 2018/05/05 09:00 | Federico Delbonis v Miguel Semmler | 6-4,6-1 |
| ITF Spain F10 | 2018/04/24 11:00 | Pedro Cachin v Miguel Semmler | 6-1,6-4 |
| ITF Austria F5 Qual | 2018/07/29 08:00 | Matei A Georgescu v Nick Cmager | 6-7,3-6 |
| ITF Austria F4 | 2018/07/25 09:35 | Stefano Battaglino v Matei A Georgescu | 6-4,6-1 |
| ITF Austria F4 | 2018/07/23 14:00 | Bernie Schranz v Matei A Georgescu | 7-6,5-7,3-6 |
| ITF Austria F4 Qual | 2018/07/22 08:00 | Moritz Trocker v Matei A Georgescu | 5-7,6-4,6-7 |
| ITF Austria F4 Qual | 2018/07/21 10:00 | Gabriel Huber v Matei A Georgescu | 6-3,3-6,6-7 |
| ITF Romania F1 | 2018/05/24 08:40 | Nicolae Frunza v Matei A Georgescu | 6-3,6-2 |
| ITF Romania F1 | 2018/05/22 09:15 | Radu F Macovei v Matei A Georgescu | 2-6,6-7 |
| ITF Bulgaria F1 | 2018/05/15 07:00 | Martin Dimitrov v Matei A Georgescu | 6-4,6-7,7-6 |