| Czech Republic F2, Singles | 2015/05/20 10:00 | Weissborn, Tristan v Brunner, Pascal | 6-2,4-6,2-6 |
| ITF Hungary F7 | 2018/08/30 09:30 | Brunner, Pascal v Doumbia, Sadio | 3-6,6-7 |
| ITF Hungary F7 | 2018/08/29 08:30 | Brunner, Pascal v Samuel Puskar | 7-6,6-1 |
| ITF Slovakia F3 | 2018/08/09 10:15 | Brunner, Pascal v Paul Jubb | 4-6,6-3,6-7 |
| ITF Slovakia F3 | 2018/08/08 08:00 | Brunner, Pascal v Kosec, Ivan | 6-2,6-1 |
| Challenger Padova Qual | 2018/07/21 08:30 | Brunner, Pascal v Malla, Bastian | 5-7,4-6 |
| ITF Czech Republic F4 | 2018/06/28 14:00 | Lukas Rosol v Brunner, Pascal | 7-5,6-1 |
| ITF Czech Republic F4 | 2018/06/27 10:30 | Rio Noguchi v Brunner, Pascal | 1-6,3-6 |
| ITF Czech Republic F4 | 2018/06/26 08:00 | David Pichler v Brunner, Pascal | 0-6,1-6 |
| Austria Bundesliga | 2019/09/07 15:00 | Weissborn, Tristan v Mirnegg, Marco | 6-3,4-6,5-7 |
| Shenzhen, China, Qualifying | 2018/03/11 01:30 | Andrea Vavassori v Weissborn, Tristan | 7-6,6-3 |
| Challenger Zhuhai Qual | 2018/03/03 04:15 | Yusuke Takahashi v Weissborn, Tristan | 7-6,4-6,6-3 |
| Challenger Brescia Qual | 2017/11/11 12:45 | Weissborn, Tristan v Giovanni Fonio | 6-7,0-6 |
| Challenger Bratislava Qual | 2017/11/04 15:15 | Farquharson, Tom v Weissborn, Tristan | 6-3,6-0 |
| Challenger Anning Qual | 2017/04/23 03:20 | Soonwoo Kwon v Weissborn, Tristan | 6-7,2-6 |
| Challenger Anning Qual | 2017/04/22 06:10 | Weissborn, Tristan v Guo, Zhu | 6-0,6-2 |
| Challenger Bratislava Qual | 2016/11/05 10:50 | Sebastian Ofner v Weissborn, Tristan | 6-2,7-5 |