Gael Monfils has pulled out of Casablanca and is questionable for Monte Carlo after injuring his ankle during practice.
It is the latest in a series of injuries for the Frenchman, who began the year going 12-2 but is 2-3 since mid-February.
During a rain break during an opening-round defeat in Miami, Monfils tweeted an apology for his attitude on court, and later said he was struggling mentally and physically: "My body is super-fragile. My knees are bad, my back is bad," he said. "I need to be happy to play well."