Stadium: Court 2 Round: 54 Ground: Hardcourt indoor
| Challenger Champaign | 2018/11/11 16:00 | Mikael Torpegaard v Timur Khabibulin | 6-1,6-2 |
| Challenger Knoxville | 2018/11/04 19:15 | Mikael Ymer v Mikael Torpegaard | 7-6,7-5 |
| Challenger Las Vegas | 2018/10/23 21:00 | Mikael Torpegaard v Cem Ilkel | 4-6,6-3,6-7 |
| Challenger Calgary | 2018/10/14 20:00 | Tom Fawcett v Mikael Torpegaard | 6-7,6-2,7-5 |
| Challenger Calgary | 2018/10/13 20:55 | Nick Chappell v Mikael Torpegaard | 5-7,4-6 |
| Challenger Tiburon | 2018/09/27 18:00 | Mikael Torpegaard v Marcelo Arevalo | 3-6,6-0,3-6 |
| Challenger Tiburon | 2018/09/25 20:40 | Mikael Torpegaard v Maverick Banes | 6-4,6-2 |
| Challenger Columbus | 2018/09/22 16:00 | Michael Mmoh v Mikael Torpegaard | 7-5,6-3 |
| Challenger Champaign | 2018/11/11 17:30 | Aleksandar Kovacevic v Nikola Cacic | 5-7,2-6 |
| Challenger Barcelona | 2018/10/07 14:50 | Nikola Cacic v Jordi Samper-Montana | 1-6,1-6 |
| Challenger Banja Luka | 2018/09/08 10:00 | Marko Tepavac v Nikola Cacic | 6-2,7-5 |
| Challenger Seville | 2018/09/01 09:30 | Ronald Slobodchikov v Nikola Cacic | 6-2,7-6 |
| Challenger Mallorca | 2018/08/26 10:00 | Tim Van Rijthoven v Nikola Cacic | 7-5,6-4 |
| Challenger Cordenons | 2018/08/11 12:05 | Nikola Cacic v Artem Dubrivnyy | 4-6,6-3,5-7 |
| Challenger Portoroz Qual | 2018/08/05 13:00 | Christopher Heyman v Nikola Cacic | 6-1,5-7,6-4 |
| Challenger Portoroz Qual | 2018/08/04 08:00 | Ljubomir Celebic v Nikola Cacic | 5-7,1-6 |