The 23 years old Polish professional tennis player Agnieszka Radwanska met with Russia's Maria Sharapova at the Key Biscayne Final of the 2012 Sony Ericsson Open which she defeated 7-5, 6-4 on Saturday, March 31, 2012. She claimed her ninth WTA title and her second of 2012, while Sharapova finished as a runner-up, third time now after she was a runner-up both the Australian Open and Indian Wells to Victoria Azarenka.

Sharapova, 24, had held a 7-1 record against the Pole, and the defeat marks her fourth loss in the final at Miami. Radwanska beat Venus Williams in the quarter-finals and Marion Bartoli in the semi-finals.

You have to play six very good matches to win this tournament so I'm just extremely happy, said the Pole who won in Dubai in February. While Radwanska celebrated her ninth career title and fourth since last summer, Sharapova's defeat follows a familiar pattern.

It's always tough, because you do a really good job to get there, said Sharapova. It's obviously always the toughest round. Radwanska's only defeats of the year have come against world number one Azarenka, and her counter-punching style induced a string of errors from her opponent.

Sharapova, who has finished as runner-up in the tournament in 2005, 2006 and 2011, ended the match with 45 unforced errors next to her name. Radwanska faced down all three of the break points she faced and pounced late in each set to crack Sharapova's serve.