| Dutch Int. Women | 2019/04/12 08:30 | Getter Saar v Theresa Isenberg | L | 2-1 |
| Giraldilla Int. XD | 2018/10/31 10:55 | Theresa Isenberg v Anastasiia Semenova | L | 0-2 |
| Swiss Open WD Qual | 2018/10/30 12:29 | Annalena Diks v Theresa Isenberg | W | 0-2 |
| Polish Int. Women | 2018/09/21 16:55 | Theresa Isenberg v Georgina Bland | L | 0-2 |