Del Potro defies wrist injury to make Cincinnati semis
Juan Martin Del Potro of Argentina returns a shot to Dmitry Tursunov of Russia on August 16, 2013 at Lindner Family Tennis Center in Cincinnati, Ohio. Del Potro reached the semi-finals of the Cincinnati Masters on Friday with a 6-4, 3-6, 6-1 defeat of Russian qualifier Dmitry Tursunov.
The Argentine missed much of the 2010 season with a wrist problems and remains cautious.
"Yes, it bothers me a little bit, but not too much," said the 2009 US Open winner.
"I'm trying to play slices and different shots before the US Open to see how different I can play against the top guys or (try) doing different things."
But he added: "I'm okay, my knee is OK too, and that's important looking forward to New York. It's nothing dangerous. I'm always in contact with my doctor; he's taking care of me all the time."
Del Potro needed one and three-quarter hours to get past veteran Russian Tursunov, with the Argentine hammering 15 aces and breaking three times.
He will play the winner from top seed Novak Djokovic, bidding for his first title in Cincinnati, and American John Isner.
Del Potro reached the semi-finals in 2012 where he lost to Djokovic.
"This is the last tournament for me before the US Open, so it's a good thing for my preparations. I will try to play better than today."