Spanish tennis star Rafael Nadal suffered a muscle strain in his back during the recently concluded Australian Open, but the injury will not cause him to miss any tournaments on his schedule.

The world No. 1 underwent tests at a clinic in Barcelona a day after arriving in Spain from Melbourne, Australia, where he was upset in four sets in the final of the year's first Grand Slam event by Swiss Stanislas Wawrinka.

After being clearly outplayed in the first set of Sunday's final, Nadal began experiencing sharp pain in his back early in the second set and was unable to serve or move as effectively as usual.

He managed to win the third set thanks mainly to errors from his opponent but eventually lost 6-3, 6-2, 3-6, 6-3.

The 13-time Grand Slam champion will undergo intensive physiotherapy and has been prescribed anti-inflammatory medication. He will be examined again on Monday to evaluate whether he can gradually resume training.

Like last year, when Nadal was making a comeback from a serious knee injury, the Spaniard plans to play two lower-tier clay-court events in South America in February.

This time around, he will compete in Buenos Aires and Rio de Janeiro instead of Viña del Mar, Chile, and Sao Paulo.

Nadal will then head to the United States in March to attempt to defend his title at the BNP Paribas Open in Indian Wells, California. He also plans to play the Sony Open Tennis tournament in Miami, an event he skipped last season. 

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