| ITF - W25 Vrnjacka Banja | 08/15 09:50 | 44 | Polona Hercog v Viktoria Veleva | 6-1,6-1 | |
| ITF - W25 Vrnjacka Banja | 08/14 12:40 | 44 | Polona Hercog v Tara Mihaljevic | 6-1,6-3 | |
| ITF - W100 Maspalomas | 08/11 09:00 | 27 | Arantxa Rus v Polona Hercog | 6-3,1-6,6-0 | |
| ITF - W100 Maspalomas | 08/10 08:30 | 26 | Polona Hercog v Anna Bondar | 7-6,5-7,6-3 | |
| ITF - W100 Maspalomas | 08/08 08:25 | 25 | Polona Hercog v Amina Anshba | 6-2,6-4 | |
| WTA - Iasi | 07/18 10:00 | 25 | Polona Hercog v Reka-Luca Jani | 4-6,5-7 | |
| WTA - Bastad | 07/12 15:35 | 26 | Aliona Bolsova v Polona Hercog | 6-3,6-3 | |
| WTA - Bastad | 07/10 10:25 | 25 | Bella Bergkvist Larsson v Polona Hercog | 2-6,2-6 | |
| Wimbledon - ženy | 06/27 10:00 | 14 | Polona Hercog v Jaimee Fourlis | 3-6,6-4,3-6 | |
| ITF - W40 Otočec | 05/30 11:10 | 24 | Polona Hercog v Seone Mendez | 2-6,1-6 | |
| French Open - ženy | 05/24 16:05 | 15 | Mirjam Bjorklund v Polona Hercog | 6-0,6-1 | |
| French Open - ženy | 05/23 14:40 | 14 | Harmony Tan v Polona Hercog | 7-5,0-6,6-7 | |
| ITF - W25 Feld Am See | 05/17 13:05 | 26 | Maja Chwalinska v Polona Hercog | 6-7,7-5,6-2 | |
| ITF - W25 Feld Am See | 05/15 10:50 | 25 | Polona Hercog v Chiara Scholl | 6-4,6-4 | |
| WTA - Karlsruhe | 05/10 14:05 | 25 | [125] Laura Pigossi v Polona Hercog [166] | Retired | |
| ITF - W100 Wiesbaden | 05/05 15:00 | 26 | [110] Jule Niemeier v Polona Hercog [164] | 6-2,6-2 | |
| ITF - W100 Wiesbaden | 05/04 09:00 | 25 | [164] Polona Hercog v Kateryna Baindl [136] | 6-1,6-3 | |
| ITF - W60 Záhreb | 04/26 12:10 | 25 | [338] Antonia Ruzic v Polona Hercog [164] | 7-5,6-3 | |
| ITF - W60 Chiasso | 04/20 08:00 | 25 | [255] Irene Burillo Escorihuela v Polona Hercog [164] | 3-6,6-4,6-3 | |
| ITF - W60 Bellinzona | 04/15 12:25 | 27 | [137] Polona Hercog v Dea Herdzelas [209] | 3-6,6-1,4-6 | |
| ITF - W60 Bellinzona | 04/14 08:00 | 26 | [137] Polona Hercog v Johana Markova [413] | 6-2,6-1 | |
| ITF - W60 Bellinzona | 04/12 12:30 | 25 | [137] Polona Hercog v Cristiana Ferrando [273] | Retired | |
| WTA - Limoges | 12/16 10:20 | 26 | [201] Jessika Ponchet v Polona Hercog [134] | 6-3,6-4 | |
| WTA - Limoges | 12/14 18:05 | 25 | [375] Robin Montgomery v Polona Hercog [134] | 6-4,4-6,4-6 | |
| WTA - Angers | 12/09 20:15 | 26 | [449] Mallaurie Noel v Polona Hercog [138] | 7-6,7-6 | |
| WTA - Angers | 12/08 16:30 | 25 | [138] Polona Hercog v Oceane Dodin [90] | 7-5,6-0 | |
| ITF - W100 Dubaj | 11/24 06:30 | 26 | [136] Polona Hercog v Vitalia Diatchenko [171] | 3-6,3-6 | |
| ITF - W100 Dubaj | 11/22 09:30 | 25 | [136] Polona Hercog v Sandra Samir [425] | 1-6,6-3,6-1 | |
| ITF - W60 Nantes | 11/02 10:00 | 25 | [127] Polona Hercog v Urszula Radwanska [204] | 3-6,4-6 | |
| WTA - Cluj-Napoca | 10/26 16:10 | 25 | [23] Emma Raducanu v Polona Hercog [124] | 4-6,7-5,6-1 |