# 2021 ITS Cup – Singles

Jesika Malečková was the defending champion but lost to Francesca Jones in the first round.
Sára Bejlek won the title, defeating Paula Ormaechea in the final, 6–0, 6–0.

## Seeds

* Panna Udvardy (semifinals)
* Francesca Jones (semifinals)
* Amandine Hesse (second round)
* Susan Bandecchi (first round)
* Simona Waltert (second round)
* Jessica Pieri (second round)
* Richèl Hogenkamp (first round)
* Ana Sofía Sánchez (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 |
| 1 | Panna Udvardy | 6 | 5 | 2 | | | | |
| | Paula Ormaechea | 3 | 7 | 6 | | | | |
| | Paula Ormaechea | 3 | 7 | 6 | | Paula Ormaechea | 0 | 0 |
| | | | | | WC | Sára Bejlek | 6 | 6 |
| WC | Sára Bejlek | 6 | 6 | | WC | Sára Bejlek | 6 | 6 |
| 2 | Francesca Jones | 0 | 3 | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | P Udvardy | 6 | 6 | | | | | | | | | | | | | | | | |
| WC | N Bartůňková | 0 | 2 | | 1 | P Udvardy | 6 | 6 | | | | | | | | | | | |
| | T Lukas | 4 | 3 | | | R Șerban | 1 | 0 | | | | | | | | | | | |
| | R Șerban | 6 | 6 | | | | | | | 1 | P Udvardy | 6 | 6 | | | | | | |
| PR | A Zaja | 7 | 7 | | | | | | | PR | A Zaja | 2 | 2 | | | | | | |
| | M Kolodziejová | 5 | 5 | | PR | A Zaja | 7$^7$ | 6 | | | | | | | | | | | |
| Q | M Kilnarová | 0 | 7 | 3 | 5 | S Waltert | 6$^5$ | 1 | | | | | | | | | | | |
| 5 | S Waltert | 6 | 5 | 6 | | | | | | | | | | | 1 | P Udvardy | 6 | 5 | 2 |
| 3 | A Hesse | 7$^7$ | 6 | | | | | | | | | | | | | P Ormaechea | 3 | 7 | 6 |
| Q | E Halbauer | 6$^5$ | 4 | | 3 | A Hesse | 6 | 4 | 6$^5$ | | | | | | | | | | |
| Q | J Štruplová | 4 | 6$^5$ | | | J Fourlis | 3 | 6 | 7$^7$ | | | | | | | | | | |
| | J Fourlis | 6 | 7$^7$ | | | | | | | | J Fourlis | 2 | 7$^7$ | 6$^5$ | | | | | |
| WC | N Břečková | 6 | 3 | 6 | | | | | | | P Ormaechea | 6 | 6$^3$ | 7$^7$ | | | | | |
| WC | A Sisková | 3 | 6 | 3 | WC | N Břečková | 1 | 1 | | | | | | | | | | | |
| | P Ormaechea | 6 | 6 | | | P Ormaechea | 6 | 6 | | | | | | | | | | | |
| 7 | R Hogenkamp | 4 | 1 | | | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | AS Sánchez | 4 | 2 | | | | | | | | | | | | | | |
| | D Jakupović | 6 | 6 | | | D Jakupović | 6 | 2 | 0$^r$ | | | | | | | | |
| WC | S Bejlek | 6 | 6 | | WC | S Bejlek | 3 | 6 | 3 | | | | | | | | |
| | Z Zlochová | 3 | 1 | | | | | | | WC | S Bejlek | 6 | 6 | | | | |
| Q | S Sakellaridi | 6$^2$ | 1 | | | | | | | JE | D Parry | 1 | 4 | | | | |
| JE | D Parry | 7$^7$ | 6 | | JE | D Parry | 3 | 7 | 6 | | | | | | | | |
| Q | B Gatica | 1 | 6 | 7 | Q | B Gatica | 6 | 5 | 2 | | | | | | | | |
| 4 | S Bandecchi | 6 | 2 | 5 | | | | | | | | | | WC | S Bejlek | 6 | 6 |
| 6 | J Pieri | 2 | | | | | | | | | | | | 2 | F Jones | 0 | 3 |
| | S Mendez | 0$^r$ | | | 6 | J Pieri | 6 | 1 | 2 | | | | | | | | |
| Q | N Radišić | 5 | 6 | 6 | Q | N Radišić | 0 | 6 | 6 | | | | | | | | |
| Q | M Bulgaru | 7 | 0 | 3 | | | | | | Q | N Radišić | 4 | 1 | | | | |
| Q | L Papadakis | 6 | 6 | | | | | | | 2 | F Jones | 6 | 6 | | | | |
| | V Ivakhnenko | 4 | 0 | | Q | L Papadakis | 4 | 5 | | | | | | | | | |
| | J Malečková | 5 | 4 | | 2 | F Jones | 6 | 7 | | | | | | | | | |
| 2 | F Jones | 7 | 6 | | | | | | | | | | | | | | |