# 2021 Kozerki Open – Singles

Maja Chwalińska was the defending champion but chose not to participate.
Ekaterine Gorgodze won the title, defeating Chloé Paquet in the final, 7–6$^{(9–7)}$, 0–6, 6–4.

## Seeds

* Dalma Gálfi (quarterfinals)
* Çağla Büyükakçay (second round)
* Ekaterine Gorgodze (champion)
* Gabriela Talabă (second round)
* Despina Papamichail (quarterfinals)
* Chloé Paquet (final)
* Tessah Andrianjafitrimo (semifinals)
* Irene Burillo Escorihuela (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 7 | Tessah Andrianjafitrimo | 6 | 5 | 4 | | | | | |
| 3 | Ekaterine Gorgodze | 4 | 7 | 6 | | | | | |
| 3 | Ekaterine Gorgodze | 4 | 7 | 6 | 3 | Ekaterine Gorgodze | 7$^9$ | 0 | 6 |
| | | | | | 6 | Chloé Paquet | 6$^7$ | 6 | 4 |
| Q | Bárbara Gatica | 3 | 3 | | 6 | Chloé Paquet | 6$^7$ | 6 | 4 |
| 6 | Chloé Paquet | 6 | 6 | | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | D Gálfi | 6 | 6 | | | | | | | | | | | | | | | |
| WC | W Baszak | 3 | 0 | | 1 | D Gálfi | 6 | 6$^5$ | 6 | | | | | | | | | |
| | D Marcinkēviča | 2 | 2 | | Q | ML Carlé | 2 | 7$^7$ | 0 | | | | | | | | | |
| Q | ML Carlé | 6 | 6 | | | | | | | 1 | D Gálfi | 4 | 1 | | | | | |
| Q | A Ramé | 6 | 7$^7$ | | | | | | | 7 | T Andrianjafitrimo | 6 | 6 | | | | | |
| | C Perrin | 1 | 6$^5$ | | Q | A Ramé | 6 | 4 | 1 | | | | | | | | | |
| WC | A Kubareva | 2 | 2 | | 7 | T Andrianjafitrimo | 1 | 6 | 6 | | | | | | | | | |
| 7 | T Andrianjafitrimo | 6 | 6 | | | | | | | | | | | 7 | T Andrianjafitrimo | 6 | 5 | 4 |
| 3 | E Gorgodze | 6 | 6 | | | | | | | | | | | 3 | E Gorgodze | 4 | 7 | 6 |
| | I Fetecău | 2 | 2 | | 3 | E Gorgodze | 6 | 7$^8$ | | | | | | | | | | |
| Q | D Vismane | 6 | 6 | | Q | D Vismane | 2 | 6$^6$ | | | | | | | | | | |
| | AS Sánchez | 1 | 0 | | | | | | | 3 | E Gorgodze | 6 | 6 | | | | | |
| WC | M Kubka | 6 | 6 | | | | | | | 5 | D Papamichail | 3 | 0 | | | | | |
| LL | A Anshba | 4 | 4 | | WC | M Kubka | 3 | 4 | | | | | | | | | | |
| Q | A Gámiz | 6 | 3 | 6$^6$ | 5 | D Papamichail | 6 | 6 | | | | | | | | | | |
| 5 | D Papamichail | 3 | 6 | 7$^8$ | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | I Burillo Escorihuela | 0 | 5 | | | | | | | | | | | | | | | |
| Q | T Smitková | 6 | 7 | | Q | T Smitková | 0 | 1 | | | | | | | | | | |
| | S-j Jang | 6 | 6 | | | S-j Jang | 6 | 6 | | | | | | | | | | |
| LL | V Olianovskaia | 4 | 2 | | | | | | | | S-j Jang | 4 | 0 | | | | | |
| Q | B Gatica | 6 | 4 | | | | | | | Q | B Gatica | 6 | 6 | | | | | |
| | F Contreras | 4 | 0$^r$ | | Q | B Gatica | 2 | 6 | 6 | | | | | | | | | |
| | Y-h Lee | 7$^7$ | 2 | 4 | 4 | G Talabă | 6 | 3 | 3 | | | | | | | | | |
| 4 | G Talabă | 6$^5$ | 6 | 6 | | | | | | | | | | | Q | B Gatica | 3 | 3 |
| 6 | C Paquet | 6 | 5 | 6 | | | | | | | | | | | 6 | C Paquet | 6 | 6 |
| LL | J Aney | 3 | 7 | 1 | 6 | C Paquet | 6 | 6 | | | | | | | | | | |
| | D Jakupović | 7$^7$ | 6 | | | D Jakupović | 1 | 4 | | | | | | | | | | |
| | K Okamura | 6$^3$ | 2 | | | | | | | 6 | C Paquet | 6 | 2 | 6 | | | | |
| WC | A Hertel | 3 | 2 | | | | | | | | A Zakharova | 2 | 6 | 4 | | | | |
| | A Zakharova | 6 | 6 | | | A Zakharova | 7$^7$ | 7$^9$ | | | | | | | | | | |
| LL | A Amanmuradova | 4 | 6 | 3 | 2 | Ç Büyükakçay | 6$^5$ | 6$^7$ | | | | | | | | | | |
| 2 | Ç Büyükakçay | 6 | 1 | 6 | | | | | | | | | | | | | | |