Stadium: Court 1 Round: 25 Ground: Clay
| Parnu, Singles Qualifying W-ITF-EST-01A | 2019/07/18 11:15 | Fiona Ganz v Rittberger, Sabrina | 6-3,7-6 |
| ITF - W15 Antalya | 2019/05/15 11:00 | Jenny Duerst v Rittberger, Sabrina | 7-6,6-1 |
| ITF - W15 Antalya | 2019/05/09 08:55 | Rittberger, Sabrina v Ying Zhang | 3-6,6-3,5-7 |
| ITF - W15 Antalya | 2019/05/08 07:15 | Rittberger, Sabrina v Makatsaria, Ana | 7-5,6-0 |
| ITF - W15 Antalya | 2019/05/02 07:15 | Rittberger, Sabrina v Jennifer Luikham | 2-6,4-6 |
| ITF - W15 Antalya | 2019/05/01 08:45 | Rittberger, Sabrina v Uladzislava Zverava | 6-3,6-4 |
| ITF - W15 Antalya | 2019/04/10 11:10 | Rittberger, Sabrina v Julia Stamatova | 3-6,6-1,4-6 |
| ITF - W15 Antalya | 2019/04/09 09:30 | Rittberger, Sabrina v Vicky Van De Peer | 5-7,6-1,10-4 |
| Imola, Qualifications Simples W-ITF-ITA-17A | 2019/07/16 17:00 | Ponomar, Lisa v Camilla Rosatello | 3-6,1-6 |
| Kaltenkirchen, Singles Qualifying W-ITF-GER-07A | 2019/06/11 17:10 | Marie-Charlot Lonnemann v Ponomar, Lisa | 4-6,6-4,6-0 |
| ITF W15 Cantanhede | 2019/05/26 14:30 | Berankova, Karolina v Ponomar, Lisa | 1-6,6-4,3-6 |
| ITF W15 Cantanhede | 2019/05/25 10:00 | Ponomar, Lisa v Carrillo Marin, Alba | 1-6,6-4,6-2 |
| ITF W15 Cantanhede | 2019/05/24 10:00 | Ponomar, Lisa v Anna Ureke | 4-6,6-1,6-4 |
| ITF W15 Cantanhede | 2019/05/23 11:40 | Aponasenko, Vasilisa v Ponomar, Lisa | 3-6,0-6 |
| ITF W15 Cantanhede | 2019/05/22 13:25 | Ponomar, Lisa v Almudena S-L Fernandez | 6-0,6-1 |
| ITF W15 Tucepi | 2019/05/09 11:00 | Ponomar, Lisa v Veronika Erjavec | 2-6,1-6 |