Agnieszka Radwanska beats Kirsten Flipkens to reach last four

Agnieska Radwanszka has secured her place in the semi-finals of the Miami Masters with a comeback win over Kirsten Flipkens.

Flipkens came out firing against the number four seed and earned two breaks of serve in the first set, which gave her a 6-4 win.

Radwanska hit back in the second set, taking it 6-4 to set up a decider against the Belgian.

The 24-year-old dominated the final set, breaking Flipkens three times on her way to a 6-2 victory. Radwanska will now play Serena Williams in the last four.