World number one Andy Murray has pulled out of next week's Miami Open because of an injury to his right elbow.
A lacklustre Murray lost to Canadian world number 129 Vasek Pospisil in the second round at Indian Wells last week.
The 29-year-old Briton, who won in Florida in 2009 and 2013, said: "The focus is on getting ready for the clay-court season. Apologies to the fans, it's one of my favourite tournaments."
The Briton will be replaced in the draw by world number 136 Taylor Fritz.
Murray could return to action in next month's Davis Cup quarter-final against France, which is due to begin on 7 April on an indoor clay court in Rouen.
He indicated last month that he expected to play in the tie after missing the 3-2 victory over Canada in the World Group first round.