NEWPORT BEACH, CA, USA - Top seed Christina McHale takes on compatriot Jamie Loeb in the first round of the inaugural event of the Oracle Challenger Series at the Newport Beach Tennis Club.
The tournament main draw begins on Monday, January 22.
Second seed Alison Riske will face a qualifier, while fellow Americans Varvara Lepchenko, Christina McHale, Jennifer Brady, Alison Riske, Madison Brengle and Taylor Townsend also feature in the draw alongside former French Open champion Francesca Schiavone of Italy and Yanina Wickmayer of Belgium, a former US Open semifinalist.
Full first-round draw
 Christina MCHALE (USA) v Jamie LOEB (USA)
[WC] Danielle Rose COLLINS (USA) v Qualifier
Stefanie VOEGELE (SUI) v [WC] Claire LIU (USA)
JANG Su-Jeong (KOR) v  Sofia KENIN (USA)
 Francesca SCHIAVONE (ITA) v Anna Karolina SCHMIEDLOVA (SVK)
Nicole GIBBS (USA) v Julia BOSERUP (USA)
Qualifier v Carol ZHAO (CAN)
Yanina WICKMAYER (BEL) v  Ajla TOMLJANOVIC (CRO)
 Mariana DUQUE-MARINO (COL) v Kayla DAY (USA)
[WC] Jacqueline CAKO (USA) v Qualifier
[WC] Victoria DUVAL (USA) v Misaki DOI (JPN)
Jill TEICHMANN (SUI) v  Taylor TOWNSEND (USA)
 Sachia VICKERY (USA) v Evgeniya RODINA (RUS)
Rebecca PETERSON (SWE) v Qualifier
Irina FALCONI (USA) v Qualifier
Qualifier v  Alison RISKE (USA)