# 2021 Columbus Challenger – Women's singles

This was the first edition of the women's event.
Nuria Párrizas Díaz won the title, defeating Wang Xinyu in the final, 7–6$^{(7–2)}$, 6–3.

## Seeds

* Ann Li (quarterfinals)
* Nuria Párrizas Díaz (champion)
* Madison Brengle (quarterfinals)
* Zheng Saisai (semifinals)
* Lauren Davis (quarterfinals)
* Renata Zarazúa (second round)
* Beatriz Haddad Maia (quarterfinals)
* Wang Xinyu (final)

## 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 |
| | CoCo Vandeweghe | 6$^3$ | 2 | | | | | |
| 8 | Wang Xinyu | 7$^7$ | 6 | | | | | |
| 8 | Wang Xinyu | 7$^7$ | 6 | | 8 | Wang Xinyu | 6$^2$ | 3 |
| | | | | | 2 | Nuria Párrizas Díaz | 7$^7$ | 6 |
| 4 | Zheng Saisai | 7 | 3 | 4 | 2 | Nuria Párrizas Díaz | 7$^7$ | 6 |
| 2 | Nuria Párrizas Díaz | 5 | 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 | A Li | 6 | 6 | | | | | | | | | | | | | | |
| | L Cabrera | 2 | 2 | | 1 | A Li | 7$^7$ | 6 | | | | | | | | | |
| | R Marino | 5 | 4 | | | H Dart | 6$^4$ | 3 | | | | | | | | | |
| | H Dart | 7 | 6 | | | | | | | 1 | A Li | 4 | 4 | | | | |
| | C Vandeweghe | 6 | 6 | | | | | | | | C Vandeweghe | 6 | 6 | | | | |
| WC | P Stearns | 2 | 4 | | | C Vandeweghe | 6 | 6 | | | | | | | | | |
| | C Dolehide | 4 | 6 | 6$^8$ | 6 | R Zarazúa | 4 | 3 | | | | | | | | | |
| 6 | R Zarazúa | 6 | 1 | 7$^{10}$ | | | | | | | | | | | C Vandeweghe | 6$^3$ | 2 |
| 3 | M Brengle | 6 | 4 | | | | | | | | | | | 8 | Xin Wang | 7$^7$ | 6 |
| Q | D Lao | 1 | 0$^r$ | | 3 | M Brengle | 6 | 6 | | | | | | | | | |
| | M Inglis | 3 | 6 | 2 | Q | L Chirico | 4 | 4 | | | | | | | | | |
| Q | L Chirico | 6 | 1 | 6 | | | | | | 3 | M Brengle | 3 | 3 | | | | |
| | M Bolkvadze | 6 | 7 | | | | | | | 8 | Xin Wang | 6 | 6 | | | | |
| | K Nara | 2 | 5 | | | M Bolkvadze | 6 | 2 | 3 | | | | | | | | |
| PR | E-s Liang | 6 | 3 | 4 | 8 | Xin Wang | 2 | 6 | 6 | | | | | | | | |
| 8 | Xin Wang | 2 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | L Davis | 6$^5$ | 6 | 6 | | | | | | | | | | | | | | | |
| | UM Arconada | 7$^7$ | 3 | 3 | 5 | L Davis | 6 | 7$^8$ | | | | | | | | | | | |
| WC | K Scott | 3 | 6 | 6$^5$ | | K Volynets | 2 | 6$^6$ | | | | | | | | | | | |
| | K Volynets | 6 | 2 | 7$^7$ | | | | | | 5 | L Davis | 6 | 2 | 2 | | | | | |
| WC | E Jacquemot | 6 | 4 | 4 | | | | | | 4 | S Zheng | 1 | 6 | 6 | | | | | |
| Q | A Glatch | 3 | 6 | 6 | Q | A Glatch | 6 | 4 | 3 | | | | | | | | | | |
| | A Muhammad | 7$^7$ | 3 | 6$^0$ | 4 | S Zheng | 4 | 6 | 6 | | | | | | | | | | |
| 4 | S Zheng | 6$^4$ | 6 | 7$^7$ | | | | | | | | | | | 4 | S Zheng | 7 | 3 | 4 |
| 7 | B Haddad Maia | 6$^5$ | 6 | 6 | | | | | | | | | | | 2 | N Párrizas Díaz | 5 | 6 | 6 |
| LL | D Jakupović | 7$^7$ | 2 | 4 | 7 | B Haddad Maia | 7$^7$ | 6 | | | | | | | | | | | |
| Q | P Hon | 6 | 6 | | Q | P Hon | 6$^4$ | 3 | | | | | | | | | | | |
| | F Di Lorenzo | 4 | 4 | | | | | | | 7 | B Haddad Maia | 6$^3$ | 6 | 2 | | | | | |
| | J Loeb | 1 | 3 | | | | | | | 2 | N Párrizas Díaz | 7$^7$ | 3 | 6 | | | | | |
| | H Baptiste | 6 | 6 | | | H Baptiste | 2 | 3 | | | | | | | | | | | |
| WC | E Kalieva | 2 | 2 | | 2 | N Párrizas Díaz | 6 | 6 | | | | | | | | | | | |
| 2 | N Párrizas Díaz | 6 | 6 | | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Priscilla Hon (qualified)
* Mai Hontama (qualifying competition)
* Alycia Parks (first round)
* Whitney Osuigwe (first round)
* Danielle Lao (qualified)
* Dalila Jakupović (qualifying competition, lucky loser)
* Alexa Glatch (qualified)
* Ulrikke Eikeri (qualifying competition)

### Qualifiers

* Priscilla Hon
* Alexa Glatch
* Louisa Chirico
* Danielle Lao

### Lucky loser

* Dalila Jakupović

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Priscilla Hon | 6 | 6 | | | | |
| | Rebeca Pereira | 2 | 0 | | | | |
| | Rebeca Pereira | 2 | 0 | 1 | Priscilla Hon | 6 | 6 |
| | | | | 6 | Dalila Jakupović | 3 | 4 |
| | Bárbara Gatica | 0 | 2 | 6 | Dalila Jakupović | 3 | 4 |
| 6 | Dalila Jakupović | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Mai Hontama | 7$^7$ | 6 | | | | |
| | Eleana Yu | 6$^4$ | 2 | | | | |
| | Eleana Yu | 6$^4$ | 2 | 2 | Mai Hontama | 2 | 3 |
| | | | | 7 | Alexa Glatch | 6 | 6 |
| WC | Irina Cantos Siemers | 5 | 4 | 7 | Alexa Glatch | 6 | 6 |
| 7 | Alexa Glatch | 7 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Alycia Parks | 7$^7$ | 1 | 6$^4$ | | | | | |
| PR | Louisa Chirico | 6$^4$ | 6 | 7$^7$ | | | | | |
| PR | Louisa Chirico | 6$^4$ | 6 | 7$^7$ | PR | Louisa Chirico | 6 | 5 | 6 |
| | | | | | 8 | Ulrikke Eikeri | 2 | 7 | 3 |
| WC | Lucía Marzal Martínez | 1 | 3 | | 8 | Ulrikke Eikeri | 2 | 7 | 3 |
| 8 | Ulrikke Eikeri | 6 | 6 | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Whitney Osuigwe | 1 | 2 | | | | |
| PR | Victoria Duval | 6 | 6 | | | | |
| PR | Victoria Duval | 6 | 6 | PR | Victoria Duval | 4 | 3 |
| | | | | 5 | Danielle Lao | 6 | 6 |
| | Kyōka Okamura | 6$^2$ | 4 | 5 | Danielle Lao | 6 | 6 |
| 5 | Danielle Lao | 7$^7$ | 6 | | | | |