Roger Federer counters comments made by John McEnroe and Andre Agassi that this is the toughest era in men's tennis, with the so-called Big Four of Federer, Novak Djokovic, Rafael Nadal, and Andy Murray winning almost every significant tournament.

“I'd say no, but I don't know,” Federer told reporters. “Just because you look back maybe 15 years, then you have Sampras, Edberg, Becker, and Agassi, I don't know who else. Those guys weren't good or what? You look back, further back, 20 years, and you have the Connors and the Lendls. Those weren't good either? I mean, I don't know.  So for me I think that's respectful.  
It's just different times and definitely more athletic, there's no doubt about that. But then again we don't play doubles. We don't play mixed. Maybe we play less matches today because it's more taxing, but we do play less best of five set tennis than they used to play.  
You can't compare really, but we have somewhat of a golden era right now. I feel that truly. It's nice to see Andy making his move at the Olympics, nice to see Novak having an absolutely ridiculous year last year, and then Rafa and myself still being around. It's definitely good times. Past that you still have great champions as well. It's very interesting at the top right now, and the depth I think has never been greater than right now. But then best ever? The four of us? That's a really difficult call.”