'I can't practice': Nadal reveals how he lived 'tragedy' of Mallorca floods

Rafael Nadal, the "King of Clay" with 17 grand slam titles to his name, is in a good mood as he drains a can of Coke while talking about his comeback from injury and surgery following an intense two-and-a-half practice session in the morning.

But when asked about the flash floods that struck Mallorca in October, killing 13 people, the former world No. 1 goes quiet.

"It was terrible," Nadal told CNN Sport in an exclusive interview at his academy. "Scary, and very sad."

Most of the deaths occured in the town of Sant Llorenç des Cardassar, near Manacor, after 20 centimeters (8 inches) of rain fell in just four hours.