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Rick Rycroft, Associated Press
Spain's Rafael Nadal waves to the crowd following his first round match against Alex Kuznetsov of the US at the Australian Open tennis championship, in Melbourne, Australia, Monday, Jan. 16, 2012.

MELBOURNE, Australia — Roger Federer says he has "no hard feelings" toward Rafael Nadal after criticism from his Spanish rival regarding off-court issues.

Nadal said on the eve of the Australian Open that Federer was sitting back and allowing others to speak out and "burn themselves" seeking improved conditions for players.

Federer says "things are fine" between the two longtime rivals, although he concedes that they disagree on a way to resolve a list of player grievances that includes the length of the season and the distribution of prize money.

Nadal apologized Monday for airing his disagreement with Federer in public — although he didn't back down on the views he expressed.