# 2013 U.S. National Indoor Tennis Championships – Women's singles

Sofia Arvidsson was the defending champion, but lost to Marina Erakovic in the second round in a replay of the previous final. Erakovic made it to the finals again, this year defeating Sabine Lisicki 6–1 in the first set after Lisicki retired due to illness before the start of the second set. This was Erakovic's first WTA tour level title and the first New Zealander to win the WTA title since Belinda Cordwell in 1989.

## Seeds

* Kirsten Flipkens (quarterfinals)
* Sofia Arvidsson (second round)
* Sabine Lisicki (final, retired due to illness)
* Heather Watson (quarterfinals)
* Lucie Hradecká (first round)
* Chanelle Scheepers (first round)
* Magdaléna Rybáriková (semifinals)
* Kristina Mladenovic (quarterfinals)

## 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 |
| 7 | Magdaléna Rybáriková | 5 | 5 | | | | |
| 3 | Sabine Lisicki | 7 | 7 | | | | |
| 3 | Sabine Lisicki | 7 | 7 | 3 | Sabine Lisicki | 1 | 0$^r$ |
| | | | | | Marina Erakovic | 6 | 0 |
| | Stefanie Vögele | 2 | 4 | | Marina Erakovic | 6 | 0 |
| | Marina Erakovic | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | K Flipkens | 6 | 6 | | | | | | | | | | | | | | | |
| | S Pe'er | 2 | 2 | | 1 | K Flipkens | 7 | 3 | 6 | | | | | | | | | |
| | L Tsurenko | 6 | 6 | | | L Tsurenko | 5 | 6 | 3 | | | | | | | | | |
| Q | M Sanchez | 2 | 4 | | | | | | | 1 | K Flipkens | 7$^{13}$ | 5 | 3 | | | | |
| | K Pervak | 7 | 1 | 3 | | | | | | 7 | M Rybáriková | 6$^{11}$ | 7 | 6 | | | | |
| | L Davis | 5 | 6 | 6 | | L Davis | 6$^2$ | 2 | | | | | | | | | | |
| | S Foretz Gacon | 3 | 1 | | 7 | M Rybáriková | 7$^7$ | 6 | | | | | | | | | | |
| 7 | M Rybáriková | 6 | 6 | | | | | | | | | | | | 7 | M Rybáriková | 5 | 5 |
| 3 | S Lisicki | 7 | 6 | | | | | | | | | | | | 3 | S Lisicki | 7 | 7 |
| Q | M Keys | 5 | 3 | | 3 | S Lisicki | 7$^7$ | 4 | 6 | | | | | | | | | |
| | M Czink | 4 | 6 | 6 | | M Czink | 6$^0$ | 6 | 2 | | | | | | | | | |
| | O Puchkova | 6 | 3 | 3 | | | | | | 3 | S Lisicki | 6 | 6 | | | | | |
| WC | V Duval | 3 | 6 | 6 | | | | | | 8 | K Mladenovic | 3 | 3 | | | | | |
| | J Larsson | 6 | 1 | 3 | WC | V Duval | 1 | 6 | 3 | | | | | | | | | |
| WC | C Collins | 3 | 1 | | 8 | K Mladenovic | 6 | 3 | 6 | | | | | | | | | |
| 8 | K Mladenovic | 6 | 6 | | | | | | | | | | | | | | | |

### 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 |
| 5 | L Hradecká | 3 | 4 | | | | | | | | | | | | | |
| Q | C Feuerstein | 6 | 6 | | Q | C Feuerstein | 6 | 6$^2$ | 1 | | | | | | | |
| | S Vögele | 7$^7$ | 6 | | | S Vögele | 3 | 7$^7$ | 6 | | | | | | | |
| | S Soler Espinosa | 6$^5$ | 0 | | | | | | | | S Vögele | 6 | 6 | | | |
| | M Oudin | 4 | 6 | 3 | | | | | | 4 | H Watson | 1 | 2 | | | |
| | A Hlaváčková | 6 | 3 | 6 | | A Hlaváčková | 6 | 0 | 3 | | | | | | | |
| | G Voskoboeva | 5 | 7 | 6$^4$ | 4 | H Watson | 2 | 6 | 6 | | | | | | | |
| 4 | H Watson | 7 | 5 | 7$^7$ | | | | | | | | | | S Vögele | 2 | 4 |
| 6 | C Scheepers | 2 | 1 | | | | | | | | | | | M Erakovic | 6 | 6 |
| | C Vandeweghe | 6 | 6 | | | C Vandeweghe | 3 | 0 | | | | | | | | |
| | J Hampton | 6 | 6 | | | J Hampton | 6 | 6 | | | | | | | | |
| WC | G Muguruza | 3 | 3 | | | | | | | | J Hampton | 5 | 2 | | | |
| | M Erakovic | 4 | 7$^8$ | 6 | | | | | | | M Erakovic | 7 | 6 | | | |
| | A Beck | 6 | 6$^6$ | 4 | | M Erakovic | 6 | 3 | 6 | | | | | | | |
| Q | J Čepelová | 4 | 4 | | 2 | S Arvidsson | 1 | 6 | 3 | | | | | | | |
| 2 | S Arvidsson | 6 | 6 | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Madison Keys (qualified)
* Vesna Dolonc (first round, retired)
* Jana Čepelová (qualified)
* Monica Puig (first round)
* Mirjana Lučić-Baroni (qualifying competition)
* Maria Sanchez (qualified)
* Valeria Savinykh (first round)
* Alexa Glatch (qualifying competition)

### Qualifiers

* Madison Keys
* Maria Sanchez
* Jana Čepelová
* Claire Feuerstein

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Madison Keys | 6 | 6 | | | | |
| | Mallory Burdette | 3 | 4 | | | | |
| | Mallory Burdette | 3 | 4 | 1 | Madison Keys | 6 | 7 |
| | | | | 8 | Alexa Glatch | 2 | 5 |
| | Rebecca Marino | 3 | 4 | 8 | Alexa Glatch | 2 | 5 |
| 8 | Alexa Glatch | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Vesna Dolonc | 1 | 0$^r$ | | | | |
| | Irina Falconi | 6 | 3 | | | | |
| | Irina Falconi | 6 | 3 | | Irina Falconi | 4 | 2 |
| | | | | 6 | Maria Sanchez | 6 | 6 |
| WC | Elyzaveta Tymchenko | 2 | 1 | 6 | Maria Sanchez | 6 | 6 |
| 6 | Maria Sanchez | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Jana Čepelová | 7 | 7 | | | | | |
| | Michelle Larcher de Brito | 5 | 5 | | | | | |
| | Michelle Larcher de Brito | 5 | 5 | 3 | Jana Čepelová | 3 | 7 | 7 |
| | | | | 5 | Mirjana Lučić-Baroni | 6 | 5 | 5 |
| | Sesil Karatantcheva | 4 | 3 | 5 | Mirjana Lučić-Baroni | 6 | 5 | 5 |
| 5 | Mirjana Lučić-Baroni | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Monica Puig | 1 | 6 | 6$^3$ | | | | |
| | Claire Feuerstein | 6 | 3 | 7$^7$ | | | | |
| | Claire Feuerstein | 6 | 3 | 7$^7$ | | Claire Feuerstein | 6 | 6 |
| | | | | | WC | Taylor Townsend | 4 | 4 |
| WC | Taylor Townsend | 6 | 2 | 6 | WC | Taylor Townsend | 4 | 4 |
| 7 | Valeria Savinykh | 2 | 6 | 1 | | | | |