Roger Federer reveals that he did not consider himself a contender at the Grand Slams in 2013, a year in which he struggled with his form and dealt with back injuries. The 17-time Grand Slam champion did not get beyond the semifinals at any of the majors that season. After reaching the final four at the Australian Open, Federer lost in the quarterfinals of Roland Garros, in the second round at Wimbledon, and in the fourth round at the U.S. Open.

"I kind of felt I probably can't win, but let me give it a try with my experience," Federer told *USA Today*. "Over five sets, over two weeks, it's just too much to ask for."

But that has changed with this season's rebound, which has been marked by five titles and a return to No. 2 in the rankings. "This year it was important for me to prove myself again," he said. "The belief to win seven matches, five sets and all of that, has come back."

Federer said he did not expect to have an opportunity to regain to the No 1 ranking, but wants to get back to the top. "If it's not this year, I'm going to be somewhat close at the beginning of next year for the first few months. I think that's extra exciting and extra motivating," he said.

Federer is 1,310 ranking points behind Novak Djokovic and has a faint shot at passing him in 2014.