Stadium: Court 4 Round: 25 Ground: Clay
| ITF M25 Tulsa | 2021/06/17 01:55 | Ezekiel Clark v Nicolas Alvarez | 6-4,6-2 |
| Challenger Orlando | 2021/06/07 14:00 | Nicolas Mejia v Nicolas Alvarez | 6-3,7-5 |
| Challenger Orlando | 2021/06/06 16:20 | Strong Kirchheimer v Nicolas Alvarez | 3-6,5-7 |
| Challenger Oeiras | 2021/05/23 11:35 | Nicolas Alvarez v Timofey Skatov | 3-6,2-6 |
| ITF M25 Vic | 2021/05/18 09:50 | Nicolas Alvarez v Maxime Hamou | 6-4,0-6,6-7 |
| ITF M25 Prague | 2021/05/09 13:30 | Nicolas Alvarez v Milos Karol | 3-6,4-6 |
| Challenger Salinas 2 | 2021/04/27 14:30 | Nicolas Alvarez v Tak Khunn Wang | 6-7,4-6 |
| Challenger Salinas 2 | 2021/04/26 18:00 | Nicolas Alvarez v Yusuke Takahashi | 7-6,6-0 |
| ITF M15 Monastir | 2020/02/17 08:30 | Alvaro Guillen Meza v Mayeul Darras | 0-6,0-6 |
| ITF M15 Monastir | 2020/02/16 08:00 | Alvaro Guillen Meza v Ajay Pruthvi Nemakal | 6-0,6-2 |
| ITF M15 Monastir | 2020/02/10 08:30 | Aziz Kijametovic v Alvaro Guillen Meza | 6-3,6-4 |
| ITF M15 Monastir | 2020/02/09 08:00 | Alvaro Guillen Meza v Bastian A U Santander | 6-4,6-0 |
| ITF M15 Castellon | 2019/11/03 13:30 | Nicolas Moreno De Alboran v Alvaro Guillen Meza | 6-4,6-0 |
| ITF M15 Benicarlo | 2019/10/21 09:00 | Diego A B Sanchez v Alvaro Guillen Meza | 6-1,6-2 |
| ITF M15 Sabadell | 2019/09/29 07:00 | Alvaro Guillen Meza v Sergio Barranco | 4-6,7-6,5-10 |
| ITF M25 Portoviejo | 2019/08/08 15:00 | Alvaro Guillen Meza v Fermin Tenti | 5-7,1-6 |