David Ferrer, of Spain, holds a ball in his mouth during his loss to Andy Murray, of Britain, during the Sony Open Tennis Tournament in Key Biscayne, Fla., Sunday, March 31, 2013 (Photo: AP)
"Unfortunately I will not be able to be in Monte Carlo because of physical problems," the world number four said on his Twitter feed on Thursday, without elaborating.
Ferrer is hoping to recover in time to play in the Barcelona Open that starts on April 20.
The Monte Carlo Masters launches the European claycourt season.
(For more sports news and updates, follow Ahram Online Sports on Twitter at @AO Sports and on Facebook at AhramOnlineSports)
Short link: