Novak Djokovic's golden start to 2011 continues as he progressed to the semi-finals of the Miami Masters tennis tournament with a straight sets victory over South African Kevin Anderson.
It is the 22nd straight win of the year for the Serb, the best by any player to start a season since the 26 won by Ivan Lendl at the start of 1986.
Djokovic will play the new American number one Mardy Fish in the semi-finals.
Meanwhile women's second seed Kim Clijsters was beaten in the quarter finals by Belarussian Victoria Azarenka.
