(AP) American Sloane Stephens beat Anna Schmiedlova of Slovakia 6-4, 6-4 Monday in the first round of the New Haven Open.
The sixth seed broke Schmiedlova in the third game of the match, while reeling off 13 straight points. The two traded breaks in the second set until Stephens held serve to go up 4-2.
Fifth-seeded Roberta Vinci of Italy was the tournament's first upset victim, falling 7-5, 6-3 to Carla Suarez Navarro. The Spaniard will next play Romanian Simona Halep, who beat Daniela Hantuchova of Slovokia, 6-2, 6-1.
The 21-year-old Halep has already won three tournaments this year and is coming off an appearance in the quarterfinals in Cincinnati, where she lost to Serena Williams.
Other winners early Monday included Russians Anastasia Pavlyuchenkova and Elena Vesnina.