Rafael Nadal was a late withdrawal from the ATP 500 Acapulco after suffering an injury setback.
The World No 2 has not featured since injury ended his Australian Open bid at the quarter-final stage against Marin Cilic.
He was due to make his comeback against fellow Spaniard Feliciano Lopez on Tuesday night, live on Sky Sports Action, but was forced to pull out due to a recurrence of his hip injury.
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“My goal and hope was to play in this tournament,” said Nadal.
“Unfortunately, in my last training session on Monday, I felt a sharp pain in my leg again.”