No. 9 seed Jelena Jankovic defeated unseeded Stefanie Voegele in the Family Circle Cup semifinals Saturday, 6-4, 6-7, 6-2.

Jankovic will face top seed Serena Williams in the final on Sunday at 1 p.m. (ESPN2).

Serena, the defending Family Circle Cup champion, defeated sister Venus Williams, 6-1, 6-2.

Jankovic, from Serbia, won the Family Circle Cup title in 2007. She reached No. 1 in 2008 but gradually has slipped in the rankings to her present No. 18.

Voegele hasn’t won a WTA tournament. The 23-year-old from Switzerland was the lowest ranked player to reach a Family Circle Cup semifinal since Sabine Lisicki in 2009. But maybe there is magic in the No. 63, Lisicki’s rank when she went on to win the Family Circle Cup.

Follow Gene Sapakoff on Twitter @sapakoff.