Australian Open champion Li Na posted a 7-5, 7-5 victory over 11th-seeded Caroline Wozniacki in the quarter-finals of the WTA and ATP Miami Masters tournament on Wednesday.

China’s Li won 63 per cent of her first serve points and 79 of 150 total points in a match that lasted just over two hours.

The world number two’s win set up a semi-final against Slovakia’s Dominika Cibulkova, who beat Agnieszka Radwanska in three sets earlier in the day.

Cibulkova is winless in six career meetings against Li, including a loss in the final of this year’s Australian Open.

Thursday’s other semi-final sees world number one Serena Williams against fourth-seeded Maria Sharapova.

The American defeated Sharapova in last year’s final to capture a sixth Miami title, sending Sharapova to her fifth loss in five finals.