(AP Photo/Nick Wass)
WASHINGTON (AP) Top-seeded Lucie Safarova of the Czech Republic lost to France's Kristina Mladenovic in the first round of the Citi Open on Tuesday.
Mladenovic rallied for a 2-6, 6-3, 6-3 victory against the Wimbledon semifinalist. She will face American qualifier Taylor Townsend in the second round.
On the men's side, Americans Jack Sock, Sam Querrey and Steve Johnson each advanced with straight-set victories. Other first-round winners included Dominican Republic's Victor Estrella Burgos and Dudi Sela of Israel.