Round: 62 Ground: Hardcourt outdoor
| ITF Switzerland F5 | 2018/09/03 07:30 | Eduardo Dischinger v Jonas Schaer | 6-3,6-0 |
| ITF Switzerland F5 | 2018/09/02 08:30 | Jonas Schaer v Flamur Selmani | 6-0,6-0 |
| ITF Switzerland F1 Qual | 2018/02/05 10:20 | Fran Zvonimir Zgombic v Jonas Schaer | 3-6,6-2,6-2 |
| ITF Switzerland F1 Qual | 2017/02/05 11:30 | Simeon Rossier v Jonas Schaer | 6-3,6-2 |
| ITF Switzerland F1 Qual | 2017/02/04 11:30 | Jonas Schaer v Timo Lanz | 6-3,6-3 |
| ITF Turkey F30 | 2018/09/29 07:00 | Jonathan Van Nieuwenhove v Stefan Cizelj-Zivkovic | 7-5,4-6,4-6 |
| ITF Serbia F5 | 2018/09/02 10:30 | Shunsuke Wakita v Stefan Cizelj-Zivkovic | 6-4,6-2 |
| ITF Serbia F5 | 2018/09/01 09:30 | Stefan Cizelj-Zivkovic v Greg Polmans | 7-6,4-6,6-4 |
| ITF Serbia F4 | 2018/08/25 07:00 | Stefan Cizelj-Zivkovic v Petar Pjevcevic | 4-6,4-6 |
| ITF Serbia F1 Qual | 2018/08/04 07:00 | Stefan Cizelj-Zivkovic v Dusan Obradovic | 6-7,6-3,2-6 |