Stadium: COURT 3 Round: 25 Ground: Hardcourt outdoor
| Challenger Houston | 2018/11/13 20:05 | Roberto Cid Subervi v Jason Jung | 1-6,1-6 |
| Challenger Montevideo | 2018/11/05 21:00 | Roberto Cid Subervi v Guido Pella | 4-6,1-6 |
| Challenger Guayaquil | 2018/10/29 19:45 | Pedja Krstin v Roberto Cid Subervi | 6-3,7-6 |
| Challenger Lima | 2018/10/23 19:00 | Roberto Cid Subervi v Pablo Andujar | 3-6,3-6 |
| Challenger Santo Domingo | 2018/10/08 23:10 | Pedja Krstin v Roberto Cid Subervi | 6-0,6-1 |
| Challenger Monterrey | 2018/10/05 01:40 | Roberto Cid Subervi v David Ferrer | 2-6,7-6,2-6 |
| Challenger Monterrey | 2018/10/02 18:00 | Kevin King v Roberto Cid Subervi | 4-6,6-2,4-6 |
| Challenger Columbus | 2018/09/18 19:35 | Roberto Cid Subervi v Kaichi Uchida | 6-7,6-7 |
| Challenger Orlando | 2018/12/31 21:50 | Alex Rybakov v Goncalo Oliveira | 6-2,6-7,6-7 |
| ITF Qatar F6 | 2018/12/18 08:55 | Goncalo Oliveira v Constantin Schmitz | 4-6,3-6 |
| ITF Qatar F5 | 2018/12/15 13:00 | Tak Khunn Wang v Goncalo Oliveira | 6-3,6-3 |
| ITF Qatar F5 | 2018/12/14 12:00 | Jaume Pla Malfeito v Goncalo Oliveira | 4-6,4-6 |
| ITF Qatar F5 | 2018/12/13 12:00 | Antoine Bellier v Goncalo Oliveira | 4-6,2-6 |
| ITF Qatar F5 | 2018/12/12 12:00 | Mick Lescure v Goncalo Oliveira | 4-6,3-6 |
| ITF Qatar F5 | 2018/12/11 13:40 | Constantin Bittoun Kouzmine v Goncalo Oliveira | 3-6,6-7 |
| ITF Qatar F4 | 2018/12/08 13:00 | Aslan Karatsev v Goncalo Oliveira | 3-6,5-7 |