Miami: World number two 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 percent of her first serve points and 79 of 150 total points in the match which lasted just over two hours.
Li Na and Dominika Cibulkova who won their quarter-final matches. Pic/ AFP
Li advances to the semi-finals where she will face Dominika Cibulkova of Slovakia 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.