| UTR Pro Tennis Series Zadar Women | 2021/11/23 08:00 | Gvozdenovic, Sara v Gubina, Polina | 3-6,1-6 |
| UTR Pro Tennis Series Zadar Women | 2021/11/20 15:00 | Chiara Jerolimov v Gubina, Polina | 6-2,6-1 |
| UTR Pro Tennis Series Zadar Women | 2021/11/19 13:00 | Gubina, Polina v Bojana Jovanovic | 6-1,5-2 |
| UTR Pro Tennis Series Zadar Women | 2021/11/17 13:00 | Gubina, Polina v Sapfo Sakellaridi | 0-6,1-5 |
| UTR Pro Tennis Series Zadar Women | 2021/11/16 12:00 | Gubina, Polina v Bojana Marinkovic | 6-3,4-6,1-6 |
| UTR Pro Tennis Series Zadar Women | 2021/11/15 09:00 | Mariya Vyshkina v Gubina, Polina | 1-6,3-5 |
| ITF - W15 Monastir | 2021/07/20 08:30 | Gubina, Polina v Solymar Colling | 2-6,1-6 |
| ITF - W15 Monastir | 2021/07/11 14:00 | Gubina, Polina v Solymar Colling | 1-6,2-6 |
| UTR Pro Tennis Series Zadar Women | 2021/11/20 09:00 | Kolar, Nastja v Lopicic, Andela | 4-6,2-1 |
| UTR Pro Tennis Series Zadar Women | 2021/11/18 13:30 | Kolar, Nastja v Arina Gabriela Vasilescu | 6-2,1-6,4-6 |
| UTR Pro Tennis Series Zadar Women | 2021/11/17 14:30 | Kolar, Nastja v Sokovic, Nevena | 6-2,4-6,4-5 |
| UTR Pro Tennis Series Zadar Women | 2021/11/16 10:30 | Kolar, Nastja v Leticia Tarocco | 6-0,6-1 |
| UTR Pro Tennis Series Zadar Women | 2021/11/15 13:30 | Kolar, Nastja v Bolebruchova, Ema | 6-1,6-2 |
| UTR Pro Tennis Series Bucharest Women | 2021/11/13 10:00 | Rosca, Andreea Amalia v Kolar, Nastja | 6-0,5-2 |
| UTR Pro Tennis Series Bucharest Women | 2021/11/12 10:00 | Kolar, Nastja v Bianca E Barbulescu | 5-7,6-1,5-3 |
| UTR Pro Tennis Series Bucharest Women | 2021/11/10 11:30 | Kolar, Nastja v Diana Ilie | 4-6,6-1,5-4 |