Ana Ivanovic photos 
Ana Ivanovic pulled out of the opening singles of the Fed Cup tie against Croatia on Saturday with a viral infection.
She was replaced by Ana Jovanovic, who played the opening singles against Croatia's Jelena Kostanic-Tosic.
It was unclear wheter Ivanovic would be fit for the second day of the playoffs on Sunday.
Serbia came into the weekend as the heavy favorite to advance to the Fed Cup world group, in a tie between two former Yugoslav nations that fought a bitter ethnic war in the early 1990s. [via]
