Nadal hopeful knee injury will be healed in a week

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MADRID (Reuters) - Rafael Nadal is hopeful the knee injury that forced him out of the Australian Open will have healed in a week or less, the world number two said on Thursday.

"I just have a little tweak and I hope to have recovered in a week or even less," he added.

The injury forced the 23-year-old defending champion to retire from his quarter-final at Melbourne Park against Andy Murray on Tuesday.

The Briton had already won the first two sets before Nadal called for a medical time out and he lasted just a few more minutes before he told Murray he could not continue.

(Reporting by Iain Rogers, editing by Pritha Sarkar)