2021 Macha Lake Open – Singles
# 2021 Macha Lake Open – Singles

Barbora Krejčíková was the defending champion, having won the previous edition in 2019, but chose not to participate.

Zheng Qinwen won the title, defeating Aleksandra Krunić in the final, $7–6^{(7–5)},$ 6–3.

## Seeds

* Kristína Kučová (first round)
* Çağla Büyükakçay (first round)
* Allie Kiick (first round, retired)
* Réka Luca Jani (quarterfinals)
* Rebecca Šramková (first round)
* Julia Grabher (second round)
* Verónica Cepede Royg (first round)
* Gabriela Talabă (second 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 | Final | Final | Final |
| - | - | - | - | - | - | - |
| | Zheng Qinwen | 7 | 6 | | | |
| WC | Linda Nosková | 5 | 4 | | | |
| WC | Linda Nosková | 5 | 4 | Zheng Qinwen | $7^7$ | 6 |
| | | | | Aleksandra Krunić | $6^5$ | 3 |
| | Aleksandra Krunić | 6 | 6 | Aleksandra Krunić | $6^5$ | 3 |
| | Alexandra Cadanțu | 2 | 4 | | | |

### 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | K Kučová | 0 | 3 | | | | | | | | | | | | | | |
| | Q Zheng | 6 | 6 | | | Q Zheng | 4 | | | | | | | | | | |
| | R Hogenkamp | 3 | 6 | 1 | | V Kan | $0^r$ | | | | | | | | | | |
| | V Kan | 6 | 4 | 6 | | | | | | | Q Zheng | $7^7$ | 6 | | | | |
| Q | İ Öz | 1 | 1 | | | | | | | | T Mrdeža | $6^2$ | 2 | | | | |
| | T Mrdeža | 6 | 6 | | | T Mrdeža | 7 | $6^2$ | 6 | | | | | | | | |
| WC | D Viďmanová | 6 | 2 | 4 | 6 | J Grabher | 5 | $7^7$ | 3 | | | | | | | | |
| 6 | J Grabher | 4 | 6 | 6 | | | | | | | | | | | Q Zheng | 7 | 6 |
| 3 | A Kiick | $1^r$ | | | | | | | | | | | | WC | L Nosková | 5 | 4 |
| | K Gerlach | 4 | | | | K Gerlach | 1 | 6 | 1 | | | | | | | | |
| Q | D Šalková | 4 | $7^7$ | 3 | Q | I Burillo Escorihuela | 6 | 3 | 6 | | | | | | | | |
| Q | I Burillo Escorihuela | 6 | $6^4$ | 6 | | | | | | Q | I Burillo Escorihuela | 5 | 2 | | | | |
| | A Bondár | 6 | 6 | | | | | | | WC | L Nosková | 7 | 6 | | | | |
| Q | M Kolodziejová | 4 | 4 | | | A Bondár | 1 | $7^7$ | 5 | | | | | | | | |
| WC | L Nosková | $7^7$ | 6 | | WC | L Nosková | 6 | $6^2$ | 7 | | | | | | | | |
| 7 | V Cepede Royg | $6^5$ | 4 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 8 | G Talabă | 6 | 6 | | | | | | | | | | | | | |
| Q | K Zimmermann | 2 | 3 | | 8 | G Talabă | 5 | 1 | | | | | | | | |
| Q | A Prisăcariu | 6 | 3 | 2 | | A Krunić | 7 | 6 | | | | | | | | |
| | A Krunić | 3 | 6 | 6 | | | | | | A Krunić | 6 | 3 | 6 | | | |
| | W Osuigwe | 6 | $6^3$ | 4 | | | | | 4 | RL Jani | 2 | 6 | 3 | | | |
| WC | S Bejlek | 2 | $7^7$ | 6 | WC | S Bejlek | 4 | 3 | | | | | | | | |
| | S Waltert | 4 | 6 | 4 | 4 | RL Jani | 6 | 6 | | | | | | | | |
| 4 | RL Jani | 6 | 2 | 6 | | | | | | | | | | A Krunić | 6 | 6 |
| 5 | R Šramková | 6 | 3 | 4 | | | | | | | | | | A Cadanțu | 2 | 4 |
| WC | N Bartůňková | 1 | 6 | 6 | WC | N Bartůňková | $6^4$ | 1 | | | | | | | | |
| PR | D Aiava | 3 | 3 | | | A Cadanțu | $7^7$ | 6 | | | | | | | | |
| | A Cadanțu | 6 | 6 | | | | | | | A Cadanțu | 5 | 6 | 4 | | | |
| Q | T Smitková | 6 | 6 | | | | | | PR | A Dulgheru | 7 | 1 | $1^r$ | | | |
| Q | J Marková | 3 | 4 | | Q | T Smitková | $6^4$ | 1 | | | | | | | | |
| PR | A Dulgheru | 6 | 6 | | PR | A Dulgheru | $7^7$ | 6 | | | | | | | | |
| 2 | Ç Büyükakçay | 2 | 4 | | | | | | | | | | | | | |
