Juan Martin del Potro tells reporters in Sydney that world No. 1 Novak Djokovic will have a target on his back this year. Djokovic won three majors in 2011, including the Australian Open. "I think Roger [Federer] and Rafa [Nadal] will be going after Novak because they don't want him to repeat the year he just had," 2009 U.S. Open champion del Potro said. "What he (Djokovic) did, very difficult for him to do again. I think if someone can do the same, the only three who can do it are Roger, Rafa and Novak. They are the only three who can have the same fantastic year Novak did."

Del Potro, who is the top seed in Sydney, said he feels good after a short off-season. The Argentine lost two titanic matches in the Davis Cup final against Spaniards David Ferrer and Nadal. "If I stay healthy I think I have a good chance to win a lot of matches this year," he said. "My injuries to my back and my wrist are a thing of the past. I am close to the Top 10 again and I want to be there with the biggest names in this sport.  I have many goals this year. I want to play like I did all those years ago."