Stadium: Court 4 Round: 44
| ITF Women Bad Saulgau Qual | 2018/07/30 11:10 | Isabella Pfennig v Laura Ioana Paar | 5-7,7-6,1-6 |
| ITF Women Darmstadt | 2018/07/17 13:10 | Mina Hodzic v Isabella Pfennig | 2-6,6-2,6-0 |
| ITF Women Aschaffenburg | 2018/07/05 15:00 | Isabella Pfennig v Anna Bondar | 0-6,3-6 |
| ITF Women Aschaffenburg | 2018/07/03 14:00 | Sandra Samir v Isabella Pfennig | 6-2,0-6,2-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/04/01 06:30 | Ekani, Irys v Isabella Pfennig | 6-2,6-1 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/03/31 06:30 | Isabella Pfennig v Teoman, Cagla | 6-1,6-2 |
| ITF Women Stuttgart | 2018/01/23 12:00 | Isabella Pfennig v Laura Ioana Paar | 2-6,1-6 |
| ITF Women Petange | 2017/11/01 17:35 | Isabella Pfennig v Julia Victoria Rennert | 5-7,6-3,4-6 |
| ITF Women Hechingen Qual | 2018/08/05 10:40 | Markova, Johana v Remondina, Anna | 1-6,3-6 |
| ITF Women Bad Saulgau Qual | 2018/07/31 10:10 | Stephanie Wagner v Markova, Johana | 6-2,5-7,6-2 |
| ITF Women Bad Saulgau Qual | 2018/07/30 14:15 | Ruppert, Lena v Markova, Johana | 3-6,2-6 |
| ITF Women Prague Qual | 2018/07/23 12:30 | Lister, Cornelia v Markova, Johana | 6-3,6-2 |
| ITF Women Jablonec Nad Nisou | 2018/06/29 08:00 | Krejsova, Petra v Markova, Johana | 6-3,6-3 |
| ITF Women Jablonec Nad Nisou | 2018/06/28 09:45 | Silna, Alexandra v Markova, Johana | 0-6,1-6 |
| ITF Women Klosters | 2018/06/18 12:00 | Markova, Johana v Zuger, Joanne | 6-4,0-6,4-6 |
| ITF Women Klosters | 2018/06/17 09:10 | Markova, Johana v Hefti, Melody | 6-1,6-3 |