# 2021 Solgironès Open Catalunya – Singles

Wang Xiyu was the defending champion having won the previous edition in 2019 but chose not to participate.
Irina Khromacheva won the title, defeating Arantxa Rus in the final, 6–4, 1–6, 7–6$^{(10–8)}$.

## Seeds

* Arantxa Rus (final)
* Kaja Juvan (first round)
* Viktória Kužmová (second round)
* Tímea Babos (first round)
* Anna-Lena Friedsam (second round)
* Stefanie Vögele (first round)
* Greet Minnen (quarterfinals)
* Ysaline Bonaventure (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 |
| 1 | Arantxa Rus | 6 | 6 | | | | | | |
| Q | Tereza Mrdeža | 3 | 2 | | | | | | |
| Q | Tereza Mrdeža | 3 | 2 | | 1 | Arantxa Rus | 4 | 6 | 6$^8$ |
| | | | | | PR | Irina Khromacheva | 6 | 1 | 7$^{10}$ |
| | Olga Danilović | 6 | 5 | 0 | PR | Irina Khromacheva | 6 | 1 | 7$^{10}$ |
| PR | Irina Khromacheva | 3 | 7 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Rus | 6 | 6 | | | | | | | | | | | | | |
| | Ç Büyükakçay | 2 | 2 | | 1 | A Rus | 6 | 6 | | | | | | | | |
| Q | A Prisăcariu | 4 | 6$^{11}$ | | | N Kostić | 2 | 2 | | | | | | | | |
| | N Kostić | 6 | 7$^{13}$ | | | | | | 1 | A Rus | 7 | 6 | | | | |
| Q | M Bassols Ribera | 6 | 6 | | | | | | Q | M Bassols Ribera | 5 | 4 | | | | |
| WC | F Jones | 0 | 3 | | Q | M Bassols Ribera | 6 | 6 | | | | | | | | |
| WC | M Custic | 0 | 7$^7$ | 6 | WC | M Custic | 3 | 4 | | | | | | | | |
| 8 | Y Bonaventure | 6 | 6$^4$ | 2 | | | | | | | | | 1 | A Rus | 6 | 6 |
| 3 | V Kužmová | 6 | 7 | | | | | | | | | | Q | T Mrdeža | 3 | 2 |
| Q | C Ferrando | 4 | 5 | | 3 | V Kužmová | 2 | 2 | | | | | | | | |
| Q | T Mrdeža | 6 | 7 | | Q | T Mrdeža | 6 | 6 | | | | | | | | |
| | M Minella | 2 | 5 | | | | | | Q | T Mrdeža | 6 | 6 | | | | |
| | E Gorgodze | 6 | 6 | | | | | | | E Gorgodze | 1 | 4 | | | | |
| | X You | 3 | 2 | | | E Gorgodze | 7$^9$ | 7 | | | | | | | | |
| WC | V Jiménez Kasintseva | 6 | 3 | 6 | WC | V Jiménez Kasintseva | 6$^7$ | 5 | | | | | | | | |
| 6 | S Vögele | 1 | 6 | 4 | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | A-L Friedsam | 1 | 6 | 4 | | | | | | | | | | | | | | |
| | V Diatchenko | 6 | 2 | 0$^r$ | 5 | A-L Friedsam | 2 | 7$^7$ | 6$^2$ | | | | | | | | | |
| Q | G Maristany | 3 | 2 | | | O Danilović | 6 | 6$^2$ | 7$^7$ | | | | | | | | | |
| | O Danilović | 6 | 6 | | | | | | | | O Danilović | 6 | 6 | | | | | |
| | K Kozlova | 6 | 7 | | | | | | | Q | J Pieri | 4 | 4 | | | | | |
| | C Muramatsu | 4 | 5 | | | K Kozlova | 0 | 6 | 4 | | | | | | | | | |
| Q | J Pieri | 1 | 6 | 7 | Q | J Pieri | 6 | 3 | 6 | | | | | | | | | |
| 4 | T Babos | 6 | 4 | 5 | | | | | | | | | | | O Danilović | 6 | 5 | 0 |
| 7 | G Minnen | 6 | 6 | | | | | | | | | | | PR | I Khromacheva | 3 | 7 | 6 |
| Q | O Sáez Larra | 1 | 2 | | 7 | G Minnen | 6 | 4 | 6 | | | | | | | | | |
| Q | S Waltert | 7 | 7$^7$ | | Q | S Waltert | 3 | 6 | 4 | | | | | | | | | |
| | M Barthel | 5 | 6$^2$ | | | | | | | 7 | G Minnen | 3 | 3 | | | | | |
| WC | A Mintegi del Olmo | 3 | 1 | | | | | | | PR | I Khromacheva | 6 | 6 | | | | | |
| PR | I Khromacheva | 6 | 6 | | PR | I Khromacheva | 1 | 6 | 6 | | | | | | | | | |
| | L Arruabarrena | 6 | 3 | 6 | | L Arruabarrena | 6 | 3 | 3 | | | | | | | | | |
| 2 | K Juvan | 1 | 6 | 4 | | | | | | | | | | | | | | |