# 2022 Caldas da Rainha Ladies Open – Singles

Zheng Saisai was the defending champion but chose not to participate.
Lucrezia Stefanini won the title, defeating Marina Bassols Ribera in the final, 3–6, 6–1, 7–6$^{(7–3)}$.

## Seeds

* Vitalia Diatchenko (quarterfinals)
* Maddison Inglis (second round, retired)
* Suzan Lamens (second round)
* Mai Hontama (second round)
* Lesley Pattinama Kerkhove (first round)
* Yuriko Miyazaki (first round)
* Marina Bassols Ribera (final)
* Andrea Lázaro García (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 | Final | Final | Final | Final | Final |
| | Lucrezia Stefanini | 6 | 6 | | | | | |
| PR | Emiliana Arango | 2 | 1 | | | | | |
| PR | Emiliana Arango | 2 | 1 | | Lucrezia Stefanini | 3 | 6 | 7$^7$ |
| | | | | 7 | Marina Bassols Ribera | 6 | 1 | 6$^3$ |
| Q | Olga Helmi | 0 | 4 | 7 | Marina Bassols Ribera | 6 | 1 | 6$^3$ |
| 7 | Marina Bassols Ribera | 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 |
| 1 | V Diatchenko | 6 | 6 | | | | | | | | | | | | | | |
| Q | H Inoue | 1 | 4 | | 1 | V Diatchenko | 4 | 6 | 6 | | | | | | | | |
| LL | AF Santos | 5 | 1 | | | J Loeb | 6 | 0 | 2 | | | | | | | | |
| | J Loeb | 7 | 6 | | | | | | | 1 | V Diatchenko | 1 | 4 | | | | |
| Q | A Rogers | 2 | 4 | | | | | | | | L Stefanini | 6 | 6 | | | | |
| | F Jorge | 6 | 6 | | | F Jorge | 4 | 4 | | | | | | | | | |
| | L Stefanini | 6 | 6 | | | L Stefanini | 6 | 6 | | | | | | | | | |
| 8 | A Lázaro García | 4 | 4 | | | | | | | | | | | | L Stefanini | 6 | 6 |
| 3 | S Lamens | 6 | 6 | | | | | | | | | | | PR | E Arango | 2 | 1 |
| | A Kubareva | 2 | 1 | | 3 | S Lamens | 4 | 3 | | | | | | | | | |
| | E Chong | 4 | 6 | 6 | | E Chong | 6 | 6 | | | | | | | | | |
| Q | T Ng | 6 | 4 | 3 | | | | | | | E Chong | 5 | 1 | | | | |
| | A Karunaratne | 0 | 3 | | | | | | | PR | E Arango | 7 | 6 | | | | |
| PR | E Arango | 6 | 6 | | PR | E Arango | 4 | 6 | 6 | | | | | | | | |
| Q | S Hosogi | 5 | 6 | 6 | Q | S Hosogi | 6 | 3 | 4 | | | | | | | | |
| 5 | L Pattinama Kerkhove | 7 | 4 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | Y Miyazaki | 3 | 6 | 5 | | | | | | | | | | | | | | |
| | E Silva | 6 | 4 | 7 | | E Silva | 1 | 6 | 0 | | | | | | | | | |
| Q | K Jokić | 7 | 3 | 3 | Q | O Helmi | 6 | 2 | 6 | | | | | | | | | |
| Q | O Helmi | 5 | 6 | 6 | | | | | | Q | O Helmi | 6 | 2 | 7$^7$ | | | | |
| | Y Hatouka | 6 | 7$^7$ | | | | | | | | Y Hatouka | 2 | 6 | 6$^5$ | | | | |
| WC | G García Pérez | 4 | 6$^3$ | | | Y Hatouka | 6 | 7$^7$ | | | | | | | | | | |
| Q | M Portillo Ramírez | 1 | 2 | | 4 | M Hontama | 2 | 6$^3$ | | | | | | | | | | |
| 4 | M Hontama | 6 | 6 | | | | | | | | | | | | Q | O Helmi | 0 | 4 |
| 7 | M Bassols Ribera | 4 | 6 | 6 | | | | | | | | | | | 7 | M Bassols Ribera | 6 | 6 |
| | A Tikhonova | 6 | 2 | 4 | 7 | M Bassols Ribera | 6 | 6 | | | | | | | | | | |
| WC | H Kuwata | 6 | 7 | | WC | H Kuwata | 0 | 0 | | | | | | | | | | |
| WC | M Garcia | 1 | 5 | | | | | | | 7 | M Bassols Ribera | 6$^3$ | 6 | 6 | | | | |
| | V Morvayová | 2 | 2 | | | | | | | Q | A Reami | 7$^7$ | 2 | 3 | | | | |
| Q | A Reami | 6 | 6 | | Q | A Reami | 6 | 0 | | | | | | | | | | |
| WC | M Jorge | 5 | 5 | | 2 | M Inglis | 4 | 1$^r$ | | | | | | | | | | |
| 2 | M Inglis | 7 | 7 | | | | | | | | | | | | | | | |