Defending champion Andy Murray is out of the Sony Ericsson Open in Miami after losing his second-round clash with Mardy Fish 6-4 6-4.

Defending Australian Open champion Rafael Nadal endured a nervy night on Rod Laver Arena before eventually fending off the persistent challenge of Philipp Kohlschreiber in four sets.

Marat Safin began his final home tournament in style, beating Richard Gasquet 7-6 (7/5) 6-4 in the first round of the St Petersburg Open today.