Three-time Grand Slam doubles champion Jack Sock and Southern California native Coco Vandeweghe headline the field for the Oracle Challenger Series tennis tournament, which will return to the Newport Beach Tennis Club from Jan. 21-27.
The event, which debuted in Newport Beach last year, is a combined ATP Challenger Tour and WTA $125K tournament.
Sock is the former world No. 8 and Vandeweghe is a former world No. 10.
Oracle Challenger Series Houston Champion Bradley Klahn and Houston runner-up Lauren Davis are also among the entrants for the tournament, which is free and open to the public.
The men’s field features 16 total American players, headlined by Sock, who starts the 2019 season ranked No. 106 in singles and No. 2 in doubles. Klahn, ranked No. 76, is the highest ranked male in the draw and was runner-up at the Newport Beach event in 2018. His victory in Houston catapulted him to the top of the Road to Indian Wells Leaderboard, which determines the two American men and women who receive main draw wild cards into the 2019 BNP Paribas Open.
Mackenzie McDonald, who played his college tennis at UCLA, will make his Oracle Challenger Series debut. Chicago runner-up Reilly Opelka, who was a semifinalist in Newport Beach a year ago before losing to eventual champion Taylor Fritz, also will return.
Other Americans in the men’s field include Christopher Eubanks, JC Aragone, Ernesto Escobedo, Bjorn Fratangelo, Christian Harrison, Evan King, Mitchell Krueger, Michael Mmoh, Dennis Novikov, Tommy Paul, Noah Rubin and Donald Young.
On the women’s side, the field is highlighted by Vandeweghe, who has accumulated two singles and four doubles titles on tour, including the 2018 U.S. Open doubles championship. Canadian Eugenie Bouchard, a 2014 Wimbledon finalist, will play, along with 20-year-old American Sofia Kenin, who at No. 52 is the highest ranked player in the women’s draw. Davis will look to carry on the momentum from her success in Houston, where a runner-up finish left her atop the Road to Indian Wells Leaderboard.
Other notable Americans include Jessica Pegula, Sachia Vickery, Christina McHale and Francesco Di Lorenzo.
Completing the list of American women are Madison Brengle, Taylor Townsend, Nicole Gibbs, Varvara Lepchenko, Claire Liu, Allie Kiick, Danielle Lao, Jamie Loeb, Kristie Ahn, Robin Anderson and Gail Brodsky.