Belarusian Victoria Azarenka, who currently stands at number8 inthe world ranking, has defeated the world"s number 4 Garbine Muguruza of Spain in an intense match, 7-6, 7-6. Azarenka"s opponent in the quarterfinals will be the world"s number 23 Johanna Konta ofBritain.<br>Victoria Azarenka won the Miami Open in 2009 and 2011.<br>The tournament with a prize fund of over 6 million dollars will end on 3 April.