Serbian Olga Danilovic, the top seed, moved into the semi-finals of the Megasaray Hotels Open 2 by winning against Swiss Simona Waltert 6-2, 6-2 on Friday.
Danilovic, ranked No 41, will play the winner of the match between Russian Oksana Selekhmeteva and Slovenian lucky loser Tamara Zidansek next.
The Serb beat Latvian wildcard Adelina Lachinova (6-1, 6-3) and Croat Jana Fett (6-0 ret.) earlier in the tournament.
In the previous rounds, Waltert, ranked No 155, defeated Russian qualifier Tatiana Prozorova (6-3, 6-1) and Sara Bejlek (4-6, 2-0 ret.).
