| ITF W50卡爾維 | 04/15 11:15 | 54 | 雷扎伊 v Natalia Kowalczyk | 6-1,6-1 | |
| ITF W50卡爾維 | 04/14 10:55 | 54 | Yoana Moneva v Natalia Kowalczyk | 6-4,2-6,5-7 | |
| ITF W35布瓊布拉 | 04/09 09:50 | 25 | Natalia Kowalczyk v Merel Hoedt | 2-6,3-6 | |
| ITF W35布瓊布拉 | 04/08 09:25 | 54 | Natalia Kowalczyk v 莎蘭婭•謝蒂 | 6-2,6-1 | |
| ITF W35布瓊布拉 | 04/02 10:15 | 25 | Natalia Kowalczyk v 科謝妮亞•拉斯庫圖娃 | 0-6,2-6 | |
| ITF W35布瓊布拉 | 04/01 09:40 | 54 | Natalia Kowalczyk v Shefali Arora | 6-4,6-0 | |
| ITF W15安塔利亞 | 03/03 07:00 | 62 | Yoana Radulova v Natalia Kowalczyk | 6-4,7-5 | |
| ITF W15安塔利亞 | 02/25 07:00 | 62 | 賈斯米娜•斯托佩爾 v Natalia Kowalczyk | 6-2,7-6 | |
| ITF W25那空是貪瑪叻資格賽 | 09/03 01:50 | 54 | Mayuka Aikawa v Natalia Kowalczyk | 6-2,6-0 | |
| ITF W25阿斯塔納 | 07/31 10:35 | 54 | Natalia Kowalczyk v 英卡•迪塞貝 | 4-6,1-6 | |
| ITF W25蓬塔卡納 | 07/11 12:50 | 62 | Mell E R Gonzalez v Natalia Kowalczyk | 6-1,6-0 | |
| ITF W25蓬塔卡納 | 07/09 15:30 | 62 | Andanin 維拉斯 v Natalia Kowalczyk | 3-6,1-6 | |
| ITF W25蓬塔卡納 | 07/03 16:00 | 62 | 阿尼 Vangelova v Natalia Kowalczyk | 6-2,6-0 | |
| ITF W25蓬塔卡納 | 07/02 15:30 | 62 | Niditra 拉傑莫漢 v Natalia Kowalczyk | 5-7,6-7 | |
| ITF W40奧托亞克 | 05/21 11:10 | 54 | Natalia Kowalczyk v Ana Grubor | 4-6,1-6 | |
| ITF W25庫爾舒姆利亞班亞 | 05/15 07:00 | 62 | Pia Lovric v Natalia Kowalczyk | 6-2,6-0 | |
| ITF W25庫爾舒姆利亞班亞 | 05/14 10:30 | 62 | Mia Sarcev v Natalia Kowalczyk | 4-6,2-6 | |
| ITF W25布瓊布拉 | 04/13 09:40 | 26 | Natalia Kowalczyk v Jasmijn Gimbrere | 2-6,3-6 | |
| ITF W25布瓊布拉 | 04/12 07:00 | 25 | 奇拉茲 Bechri v Natalia Kowalczyk | 4-6,6-0,6-7 | |
| ITF W25布瓊布拉 | 04/10 08:00 | 54 | Nessa Pratt v Natalia Kowalczyk | 3-6,0-6 | |
| ITF W25布瓊布拉 | 04/04 08:05 | 25 | Natalia Kowalczyk v Wozuko Mdlulwa | 6-7,6-4,4-6 | |
| ITF W25布瓊布拉 | 04/03 08:00 | 54 | Min Liu v Natalia Kowalczyk | 6-2,2-6,7-10 | |
| ITF W15伊拉克利翁 | 03/19 08:00 | 62 | Natalia Kowalczyk v Emma Slavikova | 3-6,4-6 | |
| ITF W25馬納科 | 02/12 12:30 | 62 | Vanja Gudelj v Natalia Kowalczyk | 7-5,6-4 | |
| ITF W15奈洛比 | 11/22 09:05 | 25 | Natalia Kowalczyk v Sevil Yuldasheva | 1-6,2-6 | |
| ITF W15奈洛比 | 11/15 13:20 | 25 | 莎拉•艾德哥克 v Natalia Kowalczyk | 6-1,6-2 | |
| ITF W25莫茨金村 | 11/06 11:00 | 54 | Natalia Kowalczyk v Shachf Lieberman | 5-7,6-2,9-11 | |
| ITF W25耶路撒冷 | 10/30 09:00 | 54 | 基拉•帕夫洛娃 v Natalia Kowalczyk | 6-2,6-2 | |
| ITF W25比得哥什 | 08/14 09:00 | 62 | Natalia Kowalczyk v Zuzanna Frankowska | 1-6,0-6 | |
| ITF W25拉多姆 | 08/07 08:00 | 44 | Natalia Kowalczyk v Martina Marusinova | 2-6,3-6 |