# Tennis at the 2010 South American Games – Women's singles

The women's singles event at the 2010 South American Games was held on 22–28 March.

## Medalists

| Gold | Silver | Bronze |
| Cecilia Costa Melgar Chile | Verónica Cepede Royg Paraguay | Fernanda Reyes Chile |

## 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 |
| 1 | Verónica Cepede Royg (PAR) | 6 | 6 | | | | | |
| 6 | Fernanda Reyes (CHI) | 3 | 4 | | | | | |
| 6 | Fernanda Reyes (CHI) | 3 | 4 | 1 | Verónica Cepede Royg (PAR) | 3 | 6 | |
| | | | | 4 | Cecilia Costa Melgar (CHI) | 6 | 7 | |
| 4 | Cecilia Costa Melgar (CHI) | 6 | 6 | 4 | Cecilia Costa Melgar (CHI) | 6 | 7 | |
| 2 | Adriana Pérez (VEN) | 4 | 3 | Bronze medal match | Bronze medal match | Bronze medal match | Bronze medal match | Bronze medal match |
| | | | | 6 | Fernanda Reyes (CHI) | 6 | 6 | |
| | | | | 2 | Adriana Pérez (VEN) | 1 | 2 | |

### 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 Cepede Royg (PAR) | 6 | 6 | | | | | | | | | |
| | N Montufar (ECU) | 6 | 6 | | | N Montufar (ECU) | 2 | 4 | | | | | | | | | |
| | A Wijngaarde (SUR) | 2 | 0 | | | | | | | 1 | V Cepede Royg (PAR) | 7 | 6 | | | | |
| | S Flores (COL) | 1 | 3 | | | | | | | 5 | A Gámiz (VEN) | 6 | 3 | | | | |
| | FÁ Paz (PER) | 6 | 6 | | | FÁ Paz (PER) | 1 | 5 | | | | | | | | | |
| | N Zeballos (BOL) | 0 | 2 | | 5 | A Gámiz (VEN) | 6 | 7 | | | | | | | | | |
| 5 | A Gámiz (VEN) | 6 | 6 | | | | | | | | | | | 1 | V Cepede Royg (PAR) | 6 | 6 |
| | | | | | | | | | | | | | | 6 | F Reyes (CHI) | 3 | 4 |
| | | | | | 3 | A Eskenazi (ARG) | 3 | 6 | 2 | | | | | | | | |
| | P Kú Flores (PER) | 1 | 7 | 6 | | P Kú Flores (PER) | 6 | 3 | 6 | | | | | | | | |
| | N Gasser (BOL) | 6 | 6 | 4 | | | | | | | P Kú Flores (PER) | 2 | 0 | | | | |
| | L Pigossi (BRA) | 1 | 1 | | | | | | | 6 | F Reyes (CHI) | 6 | 6 | | | | |
| | MC Arenas (COL) | 6 | 6 | | | MC Arenas (COL) | 1 | 2 | | | | | | | | | |
| | MA Rovira (ECU) | 1 | 2 | | 6 | F Reyes (CHI) | 6 | 6 | | | | | | | | | |
| 6 | F Reyes (CHI) | 6 | 6 | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 7 | P Ormaechea (ARG) | 6 | 6 | | | | | | | | | | | | | | |
| | D Vidal (VEN) | 0 | 2 | | 7 | P Ormaechea (ARG) | 6 | 6 | | | | | | | | | |
| | Y Lizarazo (COL) | 3 | 6 | 6 | | Y Lizarazo (COL) | 3 | 3 | | | | | | | | | |
| | X Siles Luna (PER) | 6 | 2 | 2 | | | | | 7 | P Ormaechea (ARG) | 4 | 3 | | | | | |
| | I Robbiani (PAR) | 5 | 6 | | | | | | 4 | C Costa Melgar (CHI) | 6 | 6 | | | | | |
| | M Belén Pérez (BOL) | 7 | 7 | | | M Belén Pérez (BOL) | 6 | 0 | | | | | | | | | |
| | C Sansonetti (URU) | 2 | 1 | | 4 | C Costa Melgar (CHI) | 7 | 6 | | | | | | | | | |
| 4 | C Costa Melgar (CHI) | 6 | 6 | | | | | | | | | | | 4 | C Costa Melgar (CHI) | 6 | 6 |
| 8 | D Seguel (CHI) | 6 | 6 | | | | | | | | | | | 2 | A Pérez (VEN) | 4 | 3 |
| | C Manzi (COL) | 3 | 3 | | 8 | D Seguel (CHI) | 5 | 3 | | | | | | | | | |
| | N Kurata (BRA) | 3 | 3 | | | C Pella (ARG) | 7 | 6 | | | | | | | | | |
| | C Pella (ARG) | 6 | 6 | | | | | | | C Pella (ARG) | 6 | 3 | 2 | | | | |
| | D González (ECU) | 7 | 7 | | | | | | 2 | A Pérez (VEN) | 4 | 6 | 6 | | | | |
| | I Aguilar (PAR) | 5 | 6 | | | D González (ECU) | 2 | r | | | | | | | | | |
| | | | | | 2 | A Pérez (VEN) | 6 | | | | | | | | | | |