The Serbian will now take on Russian 14th seed Nadia Petrova, who battled to overcome Safina's conqueror, unseeded Romanian Alexandra Dulgheru, winning 6-0 3-6 6-2.

CNN: Serena and Venus headed for Rome semifinal clash

Meanwhile, up and coming Romanian Alexandra Dulgheru beat Chinese fifth seed Zheng Jie 6-3 6-4 to retain the title at the WTA event in Warsaw.

CNN: Sharapova warms up for Roland Garros with title win

But former world number one Dinara Safina's poor form continued as she was dumped out of the competition by Romanian Alexandra Dulgheru, losing 6-4 6-7 6-1.

CNN: Venus brushes aside Schnyder in Rome