Former U.S. Open champion Sloane Stephens and Karolina Pliskova, a one-time U.S. Open runner-up, won their opening matches at the San Diego Open WTA 500 on Tuesday.

Stephens, a wild-card entrant from the United States who won the 2017 U.S. Open, got her second win in 2022 over lucky loser Jil Teichmann, beating the Swiss lefthander 6-1, 7-6 (2). Pliskova, a former No. 1 from the Czech Republic who was the 2016 U.S. Open runner-up, beat American Caroilne Dolehide 6-3, 6-4 to advance to the second round. Read More