Stadium: Court 17 Round: 23 Ground: Hardcourt outdoor
| New Haven, USA | 2018/08/23 00:20 | Zarina Diyas v Kvitova, Petra | 1-6,7-5,2-6 |
| New Haven, USA | 2018/08/20 23:00 | Radwanska, Agnieszka v Kvitova, Petra | 1-6,6-7 |
| WTA Cincinnati | 2018/08/18 16:00 | Kvitova, Petra v Bertens, Kiki | 6-3,4-6,2-6 |
| WTA Cincinnati | 2018/08/17 19:05 | Kvitova, Petra v Elise Mertens | 7-5,5-7,6-3 |
| WTA Cincinnati | 2018/08/16 19:00 | Kvitova, Petra v Kristina Mladenovic | 6-4,6-2 |
| WTA Cincinnati | 2018/08/15 00:30 | Kvitova, Petra v Williams, Serena | 6-3,2-6,6-3 |
| WTA Montreal | 2018/08/09 20:30 | Bertens, Kiki v Kvitova, Petra | 6-3,6-2 |
| WTA Montreal | 2018/08/07 17:35 | Kontaveit, Anett v Kvitova, Petra | 3-6,4-6 |
| Vancouver, Singles W-WITF-CAN-01A | 2018/08/16 18:55 | Rebecca Marino v Yanina Wickmayer | 7-5,7-5 |
| Vancouver, Singles W-WITF-CAN-01A | 2018/08/15 18:40 | Glushko, Julia v Yanina Wickmayer | 4-6,6-7 |
| WTA Montreal Qual | 2018/08/04 22:45 | Caroline Dolehide v Yanina Wickmayer | 6-3,6-4 |
| Wimbledon Women | 2018/07/06 13:00 | Yanina Wickmayer v Donna Vekic | 6-7,1-6 |
| Wimbledon Women | 2018/07/04 10:30 | Petkovic, Andrea v Yanina Wickmayer | 4-6,3-6 |
| Wimbledon Women | 2018/07/02 10:30 | Mona Barthel v Yanina Wickmayer | 5-7,4-6 |
| WTA - Nottingham | 2018/06/12 16:15 | Yanina Wickmayer v Katie Boulter | 4-6,4-6 |
| ITF Women Surbiton | 2018/06/08 10:00 | Yanina Wickmayer v Harriet Dart | 2-6,6-3,0-6 |