Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF W60 Berkeley | 2022/09/19 20:15 | Poznikhirenko, Ganna v Wiersholm, Katja | 4-6,6-2,1-10 |
| WTA Cleveland | 2023/08/19 20:00 | Aliaksandra Sasnovich v Poznikhirenko, Ganna | 6-4,6-2 |
| ITF W100 Landisville | 2023/08/10 19:00 | Poznikhirenko, Ganna v Brengle, Madison | 5-7,1-6 |
| ITF W100 Landisville | 2023/08/09 17:30 | Poznikhirenko, Ganna v Moyuka Uchijima | 6-3,7-6 |
| ITF W100 Landisville | 2023/08/08 14:00 | Ava Markham v Poznikhirenko, Ganna | 4-6,5-7 |
| ITF W100 Landisville | 2023/08/07 13:55 | Crawford, Samantha v Poznikhirenko, Ganna | 4-6,3-6 |
| ITF W60 Dallas | 2023/07/25 18:05 | Madison Sieg v Poznikhirenko, Ganna | 6-0,6-3 |
| ITF W60 Dallas | 2023/07/24 19:10 | Ava Markham v Poznikhirenko, Ganna | 4-6,4-6 |
| ITF W60 Evansville | 2023/07/18 13:50 | Poznikhirenko, Ganna v Varvara Lepchenko | 4-6,1-6 |
| UTR Pro Florida Women | 2023/07/02 13:00 | Victoria Hu v Wiersholm, Katja | 6-3,6-2 |
| UTR Pro Florida Women | 2023/07/01 16:06 | Csilla Fodor v Wiersholm, Katja | 6-2,2-6,2-6 |
| UTR Pro Florida Women | 2023/06/29 16:26 | Sharabura, Kate v Wiersholm, Katja | 3-6,6-7 |
| UTR Pro Florida Women | 2023/06/26 21:26 | Mcginnis, Amber v Wiersholm, Katja | 0-6,0-6 |
| UTR Pro Florida Women | 2023/06/25 21:41 | Wiersholm, Katja v Sankavi Gownder | 6-1,6-3 |
| ITF W25 Santo Domingo | 2023/06/21 15:15 | Wiersholm, Katja v Karola Patricia Bejenaru | 6-4,6-0 |
| ITF W25 Santo Domingo | 2023/06/20 18:15 | Wiersholm, Katja v Lucia De Santa Ana | 7-5,6-3 |
| ITF W25 Santo Domingo | 2023/06/19 17:50 | Roki, Matea v Wiersholm, Katja | 3-6,6-2,5-10 |