Novak Djokovic to play Andy Murray in the quarterfinals at Miami Masters . Williams has won 14 successive matches against former No . 1 Sharapova , including the semifinals in Brisbane in January . Roger Federer and Novak Djokovic also through to the last eight . Australian Open champion Serena Williams crashes out . Women 's No . 16 Rafael Nadal sets up semifinal clash with Germany .
Novak Djokovic to play Andy Murray in the quarterfinals at Miami Masters . Roger Federer and Novak Djokovic also through to the last eight . Australian Open champion Serena Williams crashes out . Women 's No . 16 Rafael Nadal sets up semifinal clash with Germany .