Rafael Nadal has pulled out of the ATP Masters events in Indian Wells and Miami because of his ongoing hip injury.
The 31-year-old Spaniard withdrew from this week's Acapulco Open in Mexico after a recurrence of the problem.
Nadal also retired hurt from his Australian Open quarter-final against Marin Cilic with the same injury.
"I won't be able to play in Miami or Indian Wells as I need to recover," said the world number two.
"It was very painful to retire from Acapulco and it's very hard as well to not play in the USA.