Stadion: Center South Round: 45
| Challenger - Tiburon | 2018/09/22 21:55 | Renzo Olivo v Harri Heliovaara | 6-2,3-6,7-6 |
| Davis Cup | 2018/09/15 09:40 | Mohamed Safwat v Harri Heliovaara | 6-2,6-4 |
| Davis Cup | 2018/09/14 11:25 | Karim-Mohamed Maamoun v Harri Heliovaara | 3-6,2-6 |
| ITF - Schweiz F5 | 2018/09/07 11:00 | Harri Heliovaara v Louis Wessels | 6-1,4-6,1-6 |
| ITF - Schweiz F5 | 2018/09/06 11:00 | Harri Heliovaara v Alexander Ritschard | 7-6,6-2 |
| ITF - Schweiz F5 | 2018/09/05 12:40 | Harri Heliovaara v Florian Fallert | 4-6,6-3,6-3 |
| ITF - Schweiz F5 | 2018/09/03 15:45 | Harri Heliovaara v Adrien Bossel | 6-3,6-0 |
| Challenger - Jinan | 2018/08/09 10:40 | Harri Heliovaara v Denis Yevseyev | 2-6,4-6 |
| Challenger - Columbus | 2018/09/15 15:20 | Tom Fawcett v Ruan Roelofse | 6-3,6-4 |
| Challenger - Cary | 2018/09/08 15:20 | Alexander Sarkissian v Ruan Roelofse | 6-4,6-3 |
| Challenger - Chicago | 2018/09/05 17:00 | Tommy Paul v Ruan Roelofse | 6-3,6-2 |
| Challenger - Chicago | 2018/09/03 22:20 | Ruan Roelofse v Alexander Sarkissian | 3-6,4-6 |
| Challenger - Chicago | 2018/09/02 22:10 | Alejandro Gonzalez v Ruan Roelofse | 4-6,6-3,3-6 |
| Challenger - Chicago | 2018/09/02 17:45 | Tom Fawcett v Ruan Roelofse | 5-7,4-6 |
| Challenger - Vancouver | 2018/08/11 18:20 | Ruan Roelofse v Jacob Grills | 1-6,2-6 |
| Challenger - Aptos | 2018/08/04 17:20 | Ruan Roelofse v Alex Rybakov | 3-6,6-7 |