NEW HAVEN, Conn. (AP) — Four-time champion Caroline Wozniacki is out of the Connecticut Open.
The former top-ranked player lost 7-5, 6-2 to Jelena Ostapenko of Latvia on Monday in the first round of the final warmup for the U.S. Open.
Wozniacki, now ranked 51st, was coming off a second-round loss to Petra Kvitova at the Olympics.
The 39th-ranked Ostapenko will face top-seeded Agnieszka Radwanska in the second round.
Elena Vesnina of Russia and Eugenie Bouchard of Canada won their opening matches. Bouchard rolled past Annika Beck of Germany 6-2, 6-1, while Vesnina beat Camila Giorgi of Italy 6-1, 6-4.
The 20th-ranked Vesnina arrived in New Haven on the heels of a doubles gold medal at the Rio Olympics with Ekaterina Makarova. She reached her first major singles semifinal at Wimbledon.
In other matches Monday, Anastasija Sevastova beat Nicole Gibbs of the United States 7-5, 6-0, and Caroline Garcia of France completed a rain-delayed 6-1, 6-4 victory over Irina-Camelia Begu of Romania.
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