Rafael Nadal has hit out at rival Roger Federer for not taking a strong enough stand on tour issues.
And the world No. 2 has also accused the Swiss Maestro of looking out for himself.
Speaking ahead of the start of the 2012 Australian Open, Nadal said in English that he no longer wanted to discuss ATP politics because he was the only player on tour who was taking a consistent stand.
Nadal then spoke in Spanish to claim that Federer was wrong with his opinion that all is well with the sport.
"I disagree with [Federer]," Nadal was quoted by EFE as saying.
"It is very easy to say, 'I am not going to say anything, everything is positive' and come off as a 'gentleman' and burn the rest. But it is not like that.
"We each have our opinion and maybe he likes the circuit. I like it too and I think it's better than most sports, but that does not mean it cannot be better and you can't change things that are bad."