Stadium: Court 6 Round: 62
| ITF Women Essen Qual | 2018/06/10 10:30 | Barritza, Karen v Selina Dal | 6-2,6-1 |
| ITF Women Gothenburg | 2018/05/17 10:30 | Raveena Kingsley v Barritza, Karen | 6-4,4-6,6-3 |
| ITF Women Gothenburg | 2018/05/16 08:00 | Gabriella Da Silva Fick v Barritza, Karen | 6-0,6-7,5-7 |
| ITF Women Karlskrona | 2018/05/13 09:00 | Barritza, Karen v Irina Ramialison | 7-5,5-7,0-6 |
| ITF Women Karlskrona | 2018/05/12 08:00 | Matvienko, Lisa v Barritza, Karen | 4-6,4-6 |
| ITF Women Karlskrona | 2018/05/11 08:00 | Mirjam Bjorklund v Barritza, Karen | 5-7,5-7 |
| ITF Women Karlskrona | 2018/05/10 11:25 | Vehvilainen, Liisa v Barritza, Karen | 1-6,1-6 |
| ITF Women Karlskrona | 2018/05/09 11:00 | Yudanov, Marina v Barritza, Karen | 6-2,6-7,3-6 |
| ITF Women Essen Qual | 2018/06/10 15:15 | Jacob, Katharina v Fiona Ganz | 6-4,6-2 |
| ITF Women Essen Qual | 2018/06/10 07:00 | Bulatovic, Carolina v Jacob, Katharina | 0-6,6-7 |
| ITF Women Essen | 2017/06/05 09:00 | Merel Hoedt v Jacob, Katharina | 6-2,6-3 |
| Altenkirchen, Qualifications Simples W-WITF-GER-02A | 2017/02/11 09:30 | Jacob, Katharina v Kraus, Livia | 3-6,3-6 |
| ITF Women Ismaning | 2016/10/17 07:00 | Novotna, Karolina v Jacob, Katharina | 6-0,6-1 |