Stadium: Court 2 Round: 28
| ITF Women Braunschweig | 2018/08/24 11:30 | Jule Niemeier v Kucova, Kristina | 6-2,2-6,6-2 |
| ITF Women Braunschweig | 2018/08/23 12:00 | Jorovic, Ivana v Jule Niemeier | 3-6,2-6 |
| ITF Women Braunschweig | 2018/08/22 09:00 | Jule Niemeier v Koelzer, Romy | 6-3,7-5 |
| ITF Women Braunschweig | 2018/08/20 14:15 | Sofya Lansere v Jule Niemeier | 3-6,4-6 |
| ITF Women Braunschweig | 2018/08/19 08:00 | Jule Niemeier v Perper, Alexandra | 6-3,6-2 |
| ITF Women Leipzig | 2018/08/16 15:15 | Jule Niemeier v Valeriya Strakhova | 2-6,7-5,6-7 |
| ITF Women Leipzig | 2018/08/14 09:00 | Jule Niemeier v Poznikhirenko, Ganna | 6-0,6-3 |
| ITF Women Hechingen | 2018/08/08 14:25 | Jule Niemeier v Daniela Seguel | 4-6,2-6 |
| ITF Women Braunschweig | 2018/08/24 12:50 | Saez Larra, Olga v Arn, Greta | 3-6,4-6 |
| ITF Women Braunschweig | 2018/08/23 14:00 | Alexandra Vecic v Arn, Greta | 6-7,0-6 |
| ITF Women Braunschweig | 2018/08/21 12:35 | Arn, Greta v Burger, Cindy | 7-5,6-3 |
| WTA Gstaad Qual | 2018/07/14 15:50 | Arn, Greta v Allie Kiick | 2-6,2-6 |
| ITF Women Budapest | 2018/07/09 11:00 | Tena Lukas v Arn, Greta | 6-2,6-4 |
| Indian Harbour Beach, Simples W-WITF-USA-10A | 2018/04/11 17:40 | Ons Jabeur v Arn, Greta | 6-3,6-0 |
| WTA Charleston Qual | 2018/03/31 19:15 | Garcia Perez, Georgina v Arn, Greta | 6-2,7-6 |
| ITF Women Dubai Qual | 2017/12/11 06:30 | Fanny Stollar v Arn, Greta | 6-3,5-7,6-3 |