Stadium: COURT 5 Round: 24 Ground: Hardcourt outdoor
| Challenger Las Vegas | 2018/10/21 19:20 | Alex Rybakov v Ortega-Olmedo, Roberto | 6-7,4-6 |
| Challenger Las Vegas | 2018/10/20 20:45 | Alex Rybakov v Gonzalez, Alejandro | 6-2,7-6 |
| Challenger Fairfield | 2018/10/09 17:00 | Alex Rybakov v Maxime Janvier | 6-7,3-6 |
| Challenger Cary | 2018/09/09 16:15 | Alex Rybakov v Joris De Loore | 1-6,2-6 |
| Challenger Cary | 2018/09/08 14:00 | Boyden, Blaine v Alex Rybakov | 1-6,3-6 |
| Challenger Aptos | 2018/08/04 17:20 | Roelofse, Ruan v Alex Rybakov | 3-6,6-7 |
| Challenger Lexington | 2018/07/31 20:55 | Alex Rybakov v Stefano Napolitano | 4-6,3-6 |
| Challenger Lexington Qual | 2018/07/30 16:00 | Alex Rybakov v Roelofse, Ruan | 7-5,7-6 |
| ITF Qatar F6 | 2018/12/18 08:55 | Goncalo Oliveira v Schmitz, Constantin | 4-6,3-6 |
| Qatar F5, Simples | 2018/12/15 13:00 | Wang, Tak Khunn v Goncalo Oliveira | 6-3,6-3 |
| Qatar F5, Simples | 2018/12/14 12:00 | Pla Malfeito, Jaume v Goncalo Oliveira | 4-6,4-6 |
| Qatar F5, Simples | 2018/12/13 12:00 | Antoine Bellier v Goncalo Oliveira | 4-6,2-6 |
| Qatar F5, Simples | 2018/12/12 12:00 | Lescure, Mick v Goncalo Oliveira | 4-6,3-6 |
| Qatar F5, Simples | 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 |
| ITF Qatar F4 | 2018/12/07 12:00 | Pervolarakis, Michail v Goncalo Oliveira | 6-7,4-6 |