Stadium: Court 14 Round: 25 Ground: Hardcourt outdoor
| ITF Spain F31 | 2016/09/23 11:10 | Semmler, Miguel v Lopez San Martin, Alvaro | 3-6,7-5,3-6 |
| ITF Spain F27 | 2016/08/22 10:30 | Lopez San Martin, Alvaro v Semmler, Miguel | 6-3,6-2 |
| ITF Spain F18 | 2018/07/10 09:35 | Boluda-Purkiss, Carlos v Lopez San Martin, Alvaro | 5-7,6-4,6-1 |
| ITF Spain F14 | 2018/06/04 09:30 | Lopez San Martin, Alvaro v Zizou Bergs | 7-5,2-6,5-7 |
| ITF Spain F12 | 2018/05/24 12:10 | Pla Malfeito, Jaume v Lopez San Martin, Alvaro | 4-6,6-4,6-3 |
| ITF Spain F12 | 2018/05/23 10:00 | Lopez San Martin, Alvaro v Sola Grau, Gerard | 6-2,6-2 |
| ITF Spain F11 | 2018/05/17 12:20 | Lopez San Martin, Alvaro v Oriol Roca Batalla | 2-6,5-7 |
| Challenger Barletta Qual | 2017/04/09 12:00 | Lopez San Martin, Alvaro v Lorenzo Sonego | 3-6,3-6 |
| Challenger Barletta Qual | 2017/04/08 08:00 | Yakovlev, A. v Lopez San Martin, Alvaro | 1-6,0-6 |
| ITF Spain F10 | 2017/04/04 13:15 | David Jorda Sanchis v Lopez San Martin, Alvaro | 6-2,7-5 |
| ITF Spain F18 | 2018/07/10 15:10 | Semmler, Miguel v Pedro Cachin | 2-6,1-6 |
| ITF France F10 | 2018/06/19 13:10 | Semmler, Miguel v Matteo Martineau | 4-6,4-6 |
| ATP Madrid Qual | 2018/05/05 09:00 | Delbonis, Federico v Semmler, Miguel | 6-4,6-1 |
| ITF Spain F10 | 2018/04/24 11:00 | Pedro Cachin v Semmler, Miguel | 6-1,6-4 |
| ITF Spain F9 | 2018/04/19 12:20 | Raul Brancaccio v Semmler, Miguel | 6-3,6-1 |
| ITF Spain F9 | 2018/04/17 09:50 | Semmler, Miguel v Nikolas Sanchez Izquierdo | 6-4,7-6 |
| Challenger Barletta Qual | 2018/04/07 08:00 | Semmler, Miguel v Haider-Maurer, Andreas | 4-6,5-7 |
| Challenger Alicante Qual | 2018/03/31 08:30 | Semmler, Miguel v Vilella Martinez, Mario | 2-6,1-6 |