# 2018 Oracle Challenger Series – Newport Beach – Women's singles

This was the first edition of the tournament.
Wildcard Danielle Collins won the title, defeating Sofya Zhuk in the final 2–6, 6–4, 6–3.

## Seeds

* Christina McHale (first round)
* Alison Riske (first round)
* Taylor Townsend (first round)
* Francesca Schiavone (first round)
* Sofia Kenin (first round)
* Sachia Vickery (quarterfinals)
* Ajla Tomljanović (semifinals)
* Mariana Duque Mariño (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 |
| WC | Danielle Collins | 6 | 6 | | | | | | |
| 7 | Ajla Tomljanović | 4 | 3 | | | | | | |
| 7 | Ajla Tomljanović | 4 | 3 | | WC | Danielle Collins | 2 | 6 | 6 |
| | | | | | Q | Sofya Zhuk | 6 | 4 | 3 |
| Q | Sofya Zhuk | 2 | 7$^9$ | 6 | Q | Sofya Zhuk | 6 | 4 | 3 |
| Q | Mayo Hibi | 6 | 6$^7$ | 4 | | | | | |

### 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 | C McHale | 2 | 4 | | | | | | | | | | | | | | | |
| | J Loeb | 6 | 6 | | | J Loeb | 6 | 0 | 4 | | | | | | | | | |
| WC | D Collins | 6 | 7$^7$ | | WC | D Collins | 4 | 6 | 6 | | | | | | | | | |
| Q | M Bouzková | 4 | 6$^4$ | | | | | | | WC | D Collins | 6 | 3 | 6 | | | | |
| | S Vögele | 4 | 5 | | | | | | | | S-j Jang | 0 | 6 | 4 | | | | |
| WC | C Liu | 6 | 7 | | WC | C Liu | 6 | 5 | 4 | | | | | | | | | |
| | S-j Jang | 7$^8$ | 6 | | | S-j Jang | 2 | 7 | 6 | | | | | | | | | |
| 5 | S Kenin | 6$^6$ | 3 | | | | | | | | | | | | WC | D Collins | 6 | 6 |
| 4 | F Schiavone | 6 | 2 | 1 | | | | | | | | | | | 7 | A Tomljanović | 4 | 3 |
| | AK Schmiedlová | 3 | 6 | 6 | | AK Schmiedlová | 6$^6$ | 4 | | | | | | | | | | |
| | N Gibbs | 6 | 4 | 6 | | N Gibbs | 7$^8$ | 6 | | | | | | | | | | |
| | J Boserup | 4 | 6 | 0 | | | | | | | N Gibbs | 6 | 5 | 2 | | | | |
| Q | D Seguel | 3 | 6 | 5 | | | | | | 7 | A Tomljanović | 4 | 7 | 6 | | | | |
| | C Zhao | 6 | 2 | 7 | | C Zhao | 1 | 3 | | | | | | | | | | |
| | Y Wickmayer | 3 | 4 | | 7 | A Tomljanović | 6 | 6 | | | | | | | | | | |
| 7 | A Tomljanović | 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 | Semifinals | Semifinals |
| 8 | M Duque Mariño | 3 | 6$^4$ | | | | | | | | | | | | | | | |
| | K Day | 6 | 7$^7$ | | | K Day | 6 | 6$^0$ | 5 | | | | | | | | | |
| WC | J Cako | 1 | 3 | | Q | S Zhuk | 1 | 7$^7$ | 7 | | | | | | | | | |
| Q | S Zhuk | 6 | 6 | | | | | | | Q | S Zhuk | 6 | 7 | | | | | |
| WC | V Duval | 6 | 6 | | | | | | | | J Teichmann | 1 | 5 | | | | | |
| | M Doi | 2 | 1 | | WC | V Duval | 4 | 2 | | | | | | | | | | |
| | J Teichmann | 6 | 6 | | | J Teichmann | 6 | 6 | | | | | | | | | | |
| 3 | T Townsend | 4 | 2 | | | | | | | | | | | Q | S Zhuk | 2 | 7$^9$ | 6 |
| 6 | S Vickery | 6 | 6 | | | | | | | | | | | Q | M Hibi | 6 | 6$^7$ | 4 |
| | E Rodina | 0 | 3 | | 6 | S Vickery | 6 | 6 | | | | | | | | | | |
| | R Peterson | 4 | 6 | 7 | | R Peterson | 1 | 4 | | | | | | | | | | |
| Q | E Kostova | 6 | 3 | 5 | | | | | | 6 | S Vickery | 4 | 2 | | | | | |
| | I Falconi | 1 | 0$^r$ | | | | | | | Q | M Hibi | 6 | 6 | | | | | |
| Q | A Anisimova | 6 | 3 | | Q | A Anisimova | 5 | 6 | 3 | | | | | | | | | |
| Q | M Hibi | 6 | 6 | | Q | M Hibi | 7 | 3 | 6 | | | | | | | | | |
| 2 | A Riske | 3 | 4 | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Caroline Dolehide (qualifying competition)
* Marie Bouzková (qualified)
* Sofya Zhuk (qualified)
* Amanda Anisimova (qualified)
* Daniela Seguel (qualified)
* Louisa Chirico (first round)
* Fanny Stollár (first round)
* Danielle Lao (qualifying competition)
* Elitsa Kostova (qualified)
* Amandine Hesse (qualifying competition)
* Mayo Hibi (qualified)
* Usue Maitane Arconada (first round)

### Qualifiers

* Elitsa Kostova
* Marie Bouzková
* Sofya Zhuk
* Amanda Anisimova
* Daniela Seguel
* Mayo Hibi

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Caroline Dolehide | 2 | 6 | 6 | | | | |
| | Ashley Kratzer | 6 | 3 | 4 | | | | |
| | Ashley Kratzer | 6 | 3 | 4 | 1 | Caroline Dolehide | 4 | 4 |
| | | | | | 9 | Elitsa Kostova | 6 | 6 |
| | Emina Bektas | 2 | 7 | 1 | 9 | Elitsa Kostova | 6 | 6 |
| 9 | Elitsa Kostova | 6 | 5 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Marie Bouzková | 6 | 6 | | | | | |
| | Tori Kinard | 0 | 0 | | | | | |
| | Tori Kinard | 0 | 0 | 2 | Marie Bouzková | 6 | 2 | 6 |
| | | | | | Cristiana Ferrando | 3 | 6 | 2 |
| | Cristiana Ferrando | 6 | 6 | | Cristiana Ferrando | 3 | 6 | 2 |
| 12 | Usue Maitane Arconada | 1 | 4 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Sofya Zhuk | 6 | 6 | | | | |
| | Victoria Rodríguez | 1 | 2 | | | | |
| | Victoria Rodríguez | 1 | 2 | 3 | Sofya Zhuk | 6 | 7 |
| | | | | WC | Sabrina Santamaria | 4 | 5 |
| WC | Sabrina Santamaria | 6 | 6 | WC | Sabrina Santamaria | 4 | 5 |
| 7 | Fanny Stollár | 1 | 4 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Amanda Anisimova | 6 | 6 | | | | |
| | Hanna Chang | 4 | 4 | | | | |
| | Hanna Chang | 4 | 4 | 4 | Amanda Anisimova | 6 | 6 |
| | | | | 8 | Danielle Lao | 1 | 0 |
| | Karolína Muchová | 3 | 5 | 8 | Danielle Lao | 1 | 0 |
| 8 | Danielle Lao | 6 | 7 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Daniela Seguel | 6 | 6 | | | | |
| | Alexa Guarachi | 3 | 4 | | | | |
| | Alexa Guarachi | 3 | 4 | 5 | Daniela Seguel | 6 | 7 |
| | | | | 10 | Amandine Hesse | 4 | 5 |
| WC | Carson Branstine | 3 | 6$^4$ | 10 | Amandine Hesse | 4 | 5 |
| 10 | Amandine Hesse | 6 | 7$^7$ | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Louisa Chirico | 2 | 6 | 5 | | | | | |
| | Giuliana Olmos | 6 | 2 | 7 | | | | | |
| | Giuliana Olmos | 6 | 2 | 7 | | Giuliana Olmos | 6 | 0 | 2 |
| | | | | | 11 | Mayo Hibi | 4 | 6 | 6 |
| | Jovana Jakšić | 1 | 1 | | 11 | Mayo Hibi | 4 | 6 | 6 |
| 11 | Mayo Hibi | 6 | 6 | | | | | | |