| WTA Adelaide | 02/24 03:55 | 26 | [21] Petra Martic v Cori Gauff [52] | 7-5,3-6,4-6 | |
| WTA Adelaide | 02/23 00:30 | 25 | [21] Petra Martic v Liudmila Samsonova [117] | 4-6,6-0,7-5 | |
| WTA Melbourne | 02/17 01:35 | 27 | [19] Petra Martic v Daria Kasatkina [75] | 0-6,4-6 | |
| WTA Melbourne | 02/16 00:00 | 26 | Petra Martic v Kimberly Birrell | 6-1,6-3 | |
| WTA Melbourne | 02/15 02:00 | 25 | [19] Petra Martic v Rebecca Marino [317] | 6-2,5-7,6-4 | |
| Australian Open Women | 02/09 08:00 | 23 | [183] Olga Danilovic v Petra Martic [19] | 7-5,3-6,6-4 | |
| WTA Yarra Valley Classic | 02/02 23:30 | 26 | [60] Shelby Rogers v Petra Martic [18] | 7-6,6-3 | |
| WTA Yarra Valley Classic | 02/01 03:25 | 25 | [299] Vera Lapko v Petra Martic [18] | 6-4,3-6,2-6 | |
| WTA Ostrava | 10/21 14:05 | 25 | [44] Jelena Ostapenko v Petra Martic [18] | 6-3,6-1 | |
| French Open Women | 10/03 13:40 | 25 | [17] Petra Martic v Laura Siegemund [66] | 7-6,3-6,0-6 | |
| French Open Women | 10/01 14:20 | 24 | [17] Petra Martic v Veronika Kudermetova [42] | 6-7,7-5,6-3 | |
| French Open Women | 09/29 17:40 | 23 | [17] Petra Martic v Misaki Doi [81] | 7-6,7-5 |