1- Caroline Wozniacki (#4, DEN)
With Sharapova struggling with a shoulder injury and Ivanovic losing matches and falling down in the rankings, media was looking for another pretty young player. And then came Wozniacki. The 19 y.o. Danish has climbed up to #4 in the WTA rank thanks to her solid game. She won 3 WTA titles and reached 8 finals, including 1st Grand Slam final at the US Open, recording the higher number of matches won for the season.