The ailing world number one lost to Swiss Stanislas Wawrinka
in Sunday's final, preventing the Spaniard drawing level on 14
grand slam singles titles with American Pete Sampras.
Nadal needed lengthy treatment at the start of the second set,
hit back to win the third, but Wawrinka eventually captured his
debut slam with a 6-3 6-2 3-6 6-3 success.
His uncle told Cadena Ser's El Larguero show his nephew planned
to return to his native Mallorca from Melbourne before heading
to Argentina, where he is due to take part in a clay event in
Buenos Aires starting on February 10.
"The doctor said it's a tightening of the muscles and a few days
rest should be enough," said Toni.
"He went into the match after feeling twinges during the week
but very minor ones that normally do not affect you at all.
"In the second game of the second set he felt a pinch. When I
asked him after treatment what was happening, he said. 'It's
(Reporting by Iain Rogers; editing by Tony Jimenez)
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