Stadium: Court central Round: 54 Ground: Hardcourt indoor
| Croissy-Beaubourg,Singles Qualifying W-WITF-FRA-08 | 2018/03/24 09:00 | Krejsova, Petra v Akgul Amanmuradova | 6-2,6-3 |
| Altenkirchen, Singles W-WITF-GER-02A | 2018/02/20 15:30 | Krejsova, Petra v Jesika Maleckova | 1-6,4-6 |
| ITF Women Loughborough | 2018/02/07 12:15 | Krejsova, Petra v Valentini Grammatikopoulou | 5-7,1-6 |
| Glasgow, Simples W-WITF-GBR-01A | 2018/01/31 11:50 | Krejsova, Petra v Kathinka Von Deichmann | 2-6,1-6 |
| ITF Women Stuttgart | 2018/01/23 16:40 | Krejsova, Petra v Koelzer, Romy | 1-6,2-6 |
| Czech Republic Extraliga Women | 2017/12/18 09:00 | Kvitova, Petra v Krejsova, Petra | 6-2,6-1 |
| Czech Republic Extraliga Women | 2017/12/17 09:00 | Jesika Maleckova v Krejsova, Petra | 6-2,6-1 |
| Czech Republic Extraliga Women | 2017/12/15 09:51 | Krejsova, Petra v Hogenkamp, Richel | 6-7,4-6 |
| Croissy-Beaubourg,Singles Qualifying W-WITF-FRA-08 | 2018/03/24 09:00 | Lumsden, Maia v Piter, Katarzyna | 4-6,3-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/15 08:00 | Susan Bandecchi v Piter, Katarzyna | 5-7,7-5,6-3 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/13 08:00 | Skryabina, Margarita v Piter, Katarzyna | 5-7,6-2,1-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/07 08:00 | Piter, Katarzyna v Bhunu, Valeria | 0-6,6-3,6-7 |
| Altenkirchen, Singles W-WITF-GER-02A | 2018/02/21 14:20 | Harriet Dart v Piter, Katarzyna | 6-1,7-6 |
| Altenkirchen, Qualifications Simples W-WITF-GER-02A | 2018/02/19 10:45 | Di Giuseppe, Martina v Piter, Katarzyna | 5-7,3-6 |
| Altenkirchen, Qualifications Simples W-WITF-GER-02A | 2018/02/18 09:00 | Tess Sugnaux v Piter, Katarzyna | 4-6,6-4,5-7 |
| ITF Women Loughborough | 2018/02/08 13:50 | Piter, Katarzyna v Ferrando, Cristiana | 2-6,3-6 |