Stadium: Cancha La Aficion Round: 45 Ground: Hardcourt outdoor
| ITF Bolivia F1 | 2017/09/19 15:30 | Alexander Merino v Boris Arias | 2-6,6-7 |
| ITF Tunisia F12 | 2018/03/28 08:30 | Alexander Merino v Jordi Munoz-Abreu | 3-6,1-6 |
| ITF Tunisia F11 | 2018/03/18 08:30 | Alexander Merino v Daniele Catini | 7-5,5-7,3-6 |
| ITF Tunisia F11 | 2018/03/17 08:00 | Alexander Merino v Juan M G Paiva | 6-1,6-0 |
| ITF Tunisia F10 | 2018/03/14 14:20 | Simone Roncalli v Alexander Merino | 6-4,6-0 |
| ITF Tunisia F10 | 2018/03/10 08:30 | Gabriele Maria Noce v Alexander Merino | 4-6,3-6 |
| ITF Tunisia F9 | 2018/03/03 10:30 | Alexander Merino v Mitchell Thomas McDaniels | 4-6,3-6 |
| ITF Tunisia F8 | 2018/02/25 11:00 | Edoardo Lamberti v Alexander Merino | 3-6,6-4,6-4 |
| ITF Tunisia F7 | 2018/02/18 13:30 | Scott Duncan v Alexander Merino | 6-2,7-6 |
| Davis Cup | 2018/04/08 16:40 | Boris Arias v Juan E Marrero | 6-3,6-1 |
| Challenger San Luis Potosi Qual | 2018/03/25 20:25 | Cristian Rodriguez v Boris Arias | 4-6,6-1,6-2 |
| ITF USA F8 Qual | 2018/03/18 16:00 | Or Ram-Harel v Boris Arias | 6-1,6-2 |
| ITF USA F7 Qual | 2018/03/12 18:45 | Ricardo Rodriguez-Pace v Boris Arias | 6-3,7-5 |
| ITF USA F7 Qual | 2018/03/11 18:00 | Christian Samuelsson v Boris Arias | 1-6,6-3,3-6 |
| ITF USA F7 Qual | 2018/03/10 17:00 | Wally Thayne v Boris Arias | 2-6,1-6 |
| Challenger Morelos Qual | 2018/02/17 21:00 | Emilio Gomez v Boris Arias | 6-2,6-4 |
| Challenger Morelos Qual | 2018/02/17 16:40 | Ivar Jose Aramburu Contreras v Boris Arias | 2-6,3-6 |