Former world No. 3 David Nalbandian, who returned to singles play for the first time in six months last week in Sao Paulo (where reached the final), says he has changed his attitude about playing.

"I feel whole," the 31-year-old told reporters in Buenos Aires. “This year I'm going to be different. I want to go every week, choose which tournaments to play and enjoy them. I am not going to go crazy over rankings.”

The former Wimbledon finalist is currently ranked No. 78.