Ana Ivanovic has advanced to the next round of the BNP Paribas Open with a relaxed 6-3 6-2 victory over defending champion Caroline Wozniacki.
Ivanovic lost her first two service games and faced down four break points in the fifth game.
The 2008 champion lost just six points on serve for the rest of the match.
Ivanovic goes on to face France's Marion Bartoli in the quarter-finals.
