At 37, Federer is the oldest player in the top ten of the ATP rankings.
Novak Djokovic is currently the most dominant figure in men’s tennis but a new generation are beginning to step up to the plate.
And after 20 years in the sport, there is not much Federer hasn’t seen.
Speaking in an interview on SiriusXM, the Swiss star opened up on how much tennis has changed.
Federer said: “I’ve had to adapt my game to a new generation of tennis players who can hit hard at the baseline now. Big forehands. Big backhands.
“Everybody serves well and maybe there’s not so much transition game in terms of moving from the baseline to the net and finishing.
“But everybody does some things really well and that’s across the board.
“And the depth in the men’s game is much greater than it’s ever been.
“There’s more professionals so it’s just tougher.
I think I’ve been able to add more power to my game, overall power.
“I play a more offensive tennis. Almost every shot has an offensive mindset. Whereas in the past, maybe it wasn’t always like that.
“So I would think that maybe I’m a bit more attacking today than I have been in the past, even though I did start my career because of the [likes of] [Pete] Sampras and [Stefan] Edberg.
“Also, serve and volleying much more in the beginning because conditions were faster when I started out back in 1999, 2000.
“Then it got really slow so I had to adjust and really improve my baseline game and then I think I’m back to the sort of transition game moving forward.
“And I think, also, I return more aggressively nowadays. “I take the ball maybe even earlier and I really try to play up in the court.
“That’s maybe not exactly how I played 20 years ago.”