Spain's Rafael Nadal greets the crowd after defeating France's Jeremy Chardy at the VTR Open in Vina del Mar, Chile, Saturday, Feb. 9, 2013 (Photo: AP)
Nadal is in Brazil to play his second tournament after a seven-month layoff to recover from a left-knee injury. He lost in the final in Chile last week.
Nadal says leaders of the men's tour aren't thinking of ways to lengthen players' careers.
He says tennis is the only major sport where players are forced to play on cement, and it's a health issue that must involve doctors and players.
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