Ana Ivanovic

Ana Ivanovic of Serbia walks off the court after losing to Karolina Pliskova of the Czech Republic during their women's singles second round match on Day 4 of the 2014 U.S. Open at the USTA Billie Jean King National Tennis Center on August 28, 2014 in New York City. (credit: Al Bello/Getty Images)

Ivanovic Loses In 2nd Round Of U.S. Open

Ana Ivanovic, who had been having her best season since winning the French Open in 2008, lost to Karolina Pliskova 7-5, 6-4 in the second round of the U.S. Open on Thursday.