Intro:

Poland's Agnieszka Radwanska used her wits to defeat world number two Maria Sharapova 7-5 6-4 to win the Sony Ericsson Open final on Saturday and once again deny the Russian.

Sharapova has now lost all four finals she has featured in at the Miami tournament and all three she has played in this year.

Script:

A sweltering day in Miami for the final of the Sony Ericsson Open between Maria Sharapova and Agnieszka Radwanska.

The pair exchanged energy-sapping rallies in the heat in the first set, with fifth seed Radwanska varying the play to take advantage in the opener.

The Pole was happy to wait out the rallies and let the aggressive Sharapova make mistakes.

After taking the first 7-5, once again Radwanska got her tactics spot on as the second seed Russian continued to throw away points eventually losing the match 7-5, 6-4.

It was Sharapova's fourth final defeat here, but for Radwanska the victory was well thought out.

SOUNDBITE: (English) Agnieszka Radwanska:

"I think the key was to play very consistent from the beginning till the end. Maria is a great player and hitting the ball very hard and you really have to play 100 per cent to beat her"

Radwanska is 0-4 in 2012 against the top-ranked Victoria Azarenka and 26-0 against everyone else.