Jelena Jankovic and Ana Ivanovic won their reverse singles Sunday as Serbia took an insurmountable 4-0 lead over Japan in the first round of the Fed Cup's World Group II.Janovic beat Ai Sugiyama 6-3, 6-2, before Ivanovic cruised past Ayumi Morita, 6-1, 6-2.
"I was a bit nervous as this was the crucial point in the tie," said Jankovic, who dropped from first to third in the WTA rankings after an early exit at the Australian Open last month.
Ivanovic, another former No. 1, needed just over an hour to dispatch the 18-year-old Morita in the second singles.
