2018 Oracle Challenger Series – Newport Beach

The 2018 Oracle Challenger Series – Newport Beach was a professional tennis tournament played on outdoor hard courts. It was the first edition of the tournament, which was part of the 2018 ATP Challenger Tour and the 2018 WTA 125K series. It took place January 22 through 28, 2018 in Newport Beach, United States.

Seeds

 * 1 Rankings are as of 15 January 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Thai-Son Kwiatkowski
 * 🇯🇵 Kei Nishikori
 * 🇺🇸 Reilly Opelka
 * 🇺🇸 Tommy Paul

The following players received entry from the qualifying draw:
 * 🇺🇸 Tom Fawcett
 * Christian Garín
 * 🇺🇸 Dennis Novikov
 * 🇪🇸 Guillermo Olaso

Seeds

 * 1 Rankings are as of 15 January 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Jacqueline Cako
 * 🇺🇸 Danielle Collins
 * 🇺🇸 Victoria Duval
 * 🇺🇸 Claire Liu

The following players received entry from the qualifying draw:
 * 🇺🇸 Amanda Anisimova
 * 🇨🇿 Marie Bouzková
 * 🇯🇵 Mayo Hibi
 * 🇧🇬 Elitsa Kostova
 * Daniela Seguel
 * 🇷🇺 Sofya Zhuk

Withdrawals

 * Before the tournament
 * 🇺🇸 Jennifer Brady → replaced by 🇰🇷 Jang Su-jeong
 * 🇺🇸 Madison Brengle → replaced by Stefanie Vögele
 * 🇲🇪 Danka Kovinić → replaced by 🇨🇦 Carol Zhao
 * 🇺🇸 Varvara Lepchenko → replaced by Jil Teichmann

Men's singles

 * 🇺🇸 Taylor Fritz def. 🇺🇸 Bradley Klahn 3–6, 7–5, 6–0.

Men's doubles

 * 🇺🇸 James Cerretani / 🇮🇳 Leander Paes def. Treat Huey / 🇺🇸 Denis Kudla 6–4, 7–5.

Women's singles

 * 🇺🇸 Danielle Collins def. 🇷🇺 Sofya Zhuk 2–6, 6–4, 6–3

Women's doubles

 * 🇯🇵 Misaki Doi / Jil Teichmann def. 🇺🇸 Jamie Loeb / 🇸🇪 Rebecca Peterson 7–6(7–4), 1–6, [10–8]