Stadium: Court 26 Round: 62
| ITF Women Baja | 2018/07/23 15:20 | Panna Udvardy v Sumova, Diana | 6-4,6-3 |
| ITF Women Olomouc Qual | 2018/07/14 12:15 | Nikola Tomanova v Sumova, Diana | 6-3,6-4 |
| ITF Women Jablonec Nad Nisou | 2018/06/26 11:55 | Kharitonova, Anastasia v Sumova, Diana | 6-4,6-1 |
| ITF Women Kaltenkirchen | 2018/06/20 12:55 | Sumova, Diana v Wacker, Jennifer | 3-6,6-3,4-6 |
| ITF Women Prerov | 2018/06/15 09:00 | Sumova, Diana v Pantuckova, Magdalena | 3-6,2-6 |
| ITF Women Prerov | 2018/06/13 10:30 | Lavickova, Kristyna v Sumova, Diana | 4-6,3-6 |
| ITF Women Prerov | 2018/06/12 10:30 | Dudlakova, Dagmar v Sumova, Diana | 4-6,0-6 |
| ITF Women Stare Splavy Qual | 2018/06/04 08:00 | Irina Ramialison v Sumova, Diana | 6-0,6-2 |
| ITF Women Sandelfjord | 2018/07/25 09:00 | Malatinska, Justyna v Ponomar, Lisa | 3-6,2-6 |
| ITF Women Sandelfjord | 2018/07/24 11:40 | Emilie Elde v Malatinska, Justyna | 4-6,3-6 |
| ITF Women Baja | 2018/07/17 08:00 | Malatinska, Justyna v Guglielminotti, Sara | 2-6,3-6 |
| ITF Women Baja | 2018/07/16 08:00 | Potrc, Moni v Malatinska, Justyna | 4-6,1-6 |
| ITF Women Jablonec Nad Nisou | 2018/06/26 08:00 | Malatinska, Justyna v Krizova, Katerina | 4-6,4-6 |
| ITF Women Jablonec Nad Nisou Qual | 2018/06/25 10:05 | Malatinska, Justyna v Petruzelova, Marketa | 6-3,6-2 |