| Stuttgart-Stammheim, Singles W-ITF-GER-01A | 2020/01/19 09:00 | Greiner, Lena v Courcoux, Pauline | 0-6,4-6 |
| ITF W25 Braunschweig | 2019/08/19 10:55 | Marine Partaud v Greiner, Lena | 6-3,6-2 |
| ITF W25 Leipzig | 2019/08/12 14:25 | Greiner, Lena v Milkova, Barbora | 1-6,5-7 |
| Kaltenkirchen, Singles Qualifying W-ITF-GER-07A | 2019/06/11 13:45 | Greiner, Lena v Jarlskog, Ida | 3-6,3-6 |
| ITF - W15 Sharm El Sheikh | 2019/02/13 12:00 | Elena-Teodora Cadar v Greiner, Lena | 3-6,6-3,6-3 |
| ITF - W15 Sharm El Sheikh | 2019/02/07 14:20 | Malene Helgo v Greiner, Lena | 6-1,6-1 |
| ITF - W15 Sharm El Sheikh | 2019/02/06 10:05 | Drazic, Mariana v Greiner, Lena | 7-5,3-6,6-7 |
| ITF - W15 Sharm El Sheikh | 2019/02/04 11:00 | Morgina, Anna v Greiner, Lena | 3-6,6-0,10-1 |