Nadal, Djokovic and Federer breeze past in Miami

Another tournament, same story, the top 3 players look again to play in another dimension.
Djokovic is the king of the first part of the season. He never lost a match in the previous tournaments where he managed to defeat Federer (3 times!) and Nadal and had another headstart in Miami (6-0 6-1).
Nadal and Federer look also strong, but not unbeatable (especially if hey play against the Serb). The Spaniard defeated Japan’s Kei Nishikori 6-4 6-4 and the Swiss breezed past Radek Stepanek 6-3 6-3.
Talking about different dimensions, Murray is clearly in free fall.
After the horrendous defeat in the Australian Open final, he lost all his matches. In Indian Wells he lost in straight sets against world nr.143 and in Miami was humiliated by world nr. 118.