Stadium: Court 2 Round: 46 Ground: Hardcourt indoor
| Challenger Knoxville | 2018/11/05 15:00 | Shane, Ryan v Krainik, Pavel | 6-1,6-3 |
| Challenger Knoxville | 2018/11/04 15:00 | Krainik, Pavel v Luca Wiedenmann | 6-4,7-6 |
| Challenger Las Vegas | 2018/10/21 18:00 | Krainik, Pavel v Thai-Son Kwiatkowski | 4-6,2-6 |
| Challenger Las Vegas | 2018/10/20 17:00 | Krainik, Pavel v Sauer, Jordan | 6-1,6-3 |
| Challenger Calgary | 2018/10/16 00:00 | Krainik, Pavel v Filip Peliwo | 4-6,6-3,3-6 |
| Monterrey, Mexico | 2018/10/02 18:00 | Krainik, Pavel v Giraldo, Santiago | 4-6,4-6 |
| Monterrey, Mexico | 2018/10/01 18:20 | Emilio Nava v Krainik, Pavel | 5-7,6-3,3-6 |
| Monterrey, Mexico | 2018/09/30 17:30 | Krainik, Pavel v Rodriguez, Cristian | 7-6,6-4 |
| Challenger Stockton | 2018/09/30 19:35 | Heliovaara, Harri v Verbeek, Sem | 6-1,6-4 |
| Challenger Stockton | 2018/09/29 19:20 | Sebastian Korda v Verbeek, Sem | 6-3,5-7,3-6 |
| ITF Portugal F16 | 2018/08/25 09:00 | Gil, Fred v Verbeek, Sem | 6-1,6-2 |
| ITF Portugal F16 | 2018/08/24 09:00 | Verbeek, Sem v Binding, Jonathan | 7-6,6-4 |
| ITF Portugal F16 | 2018/08/23 09:00 | Desein, Niels v Verbeek, Sem | 2-6,6-7 |
| ITF Portugal F16 | 2018/08/22 11:10 | Alves, Simao v Verbeek, Sem | 2-6,0-6 |
| Cordenons, Italy | 2018/08/11 10:15 | Trusendi, Walter v Verbeek, Sem | 6-1,6-2 |
| Challenger Winnipeg Qual | 2018/07/08 23:00 | Verbeek, Sem v Marc-Andrea Huesler | 6-7,4-6 |