Stadium: Center Court Round: 62
| ITF Women Jablonec Nad Nisou Qual | 2018/06/24 08:00 | Argyelan, Csilla v Melounova, Petra | 5-7,2-6 |
| ITF Women Jablonec Nad Nisou Qual | 2018/06/23 08:00 | Melounova, Petra v Suk, Natalie | 6-2,6-4 |
| ITF Women Prerov | 2018/06/13 10:30 | Kulikova, Yulia v Melounova, Petra | 6-2,6-3 |
| ITF Women Prerov | 2018/06/12 12:00 | Melounova, Petra v Adamescu, Cristina | 6-2,6-3 |
| ITF Women Prerov Qual | 2018/06/10 11:50 | Ani Vangelova v Melounova, Petra | 0-6,3-6 |
| ITF Women Prerov Qual | 2018/06/09 11:00 | Melounova, Petra v Kucharova, Michaela | 6-3,6-4 |
| ITF Women Jablonec Nad Nisou Qual | 2018/06/23 08:00 | Sedlackova, Petra v Pogribnyak, Nataliya | 2-6,6-2,6-4 |
| ITF Women Stare Splavy Qual | 2018/06/03 09:00 | Sedlackova, Petra v Aneta Laboutkova | 6-7,6-4,3-6 |
| ITF Women Trnava | 2018/02/05 10:00 | Sedlackova, Petra v Daria Kuczer | 1-6,3-6 |
| ITF Women Trnava | 2018/02/04 15:00 | Januskova, Petra v Sedlackova, Petra | 6-2,1-6,0-6 |
| ITF Women Trnava | 2018/02/03 09:00 | Sedlackova, Petra v Silka, Klara | 7-6,6-2 |
| ITF Women Jablonc Nad Nisou Qual | 2017/12/05 11:05 | Milenkovic, Kristina v Sedlackova, Petra | 6-2,6-4 |
| Prague, Singles W-WITF-CZE-06A | 2017/09/12 08:30 | Sedlackova, Petra v Perera Ros, Meritxell | 1-6,5-7 |
| ITF Women Prague Qual | 2017/09/04 11:00 | Hrabalova, Kristyna v Sedlackova, Petra | 6-2,6-2 |