It was another disappointing outing at a Grand Slam for the young German Alexander Zverev.

Zverev, who started the tournament ranked at number four in the world, was beaten in a thrilling contest by Hyeon Chung in round three of the Australian Open, but he was bagelled in the last of five sets to crash out 7-5 6-7 6-2 3-6 0-6.

It means that despite his lofty ranking in the world, he is still yet to reach the quarter final stage of any Grand Slam in 14 attempts, only making it past the third round at Wimbledon last year.

The 20-year-old already has six titles to his name on the ATP tour, and career earnings of around $7m, but has failed to impress on the big stage as of yet.

'Sascha' hasn't beaten a top-50 ranked player at a Grand Slam event either, and he claimed to be struggling mentally after another tough defeat.

"Definitely not physical, so… I have some figuring out to do, what happens to me in deciding moments in Grand Slam," he responded when asked if his problems were mental or physical.

"It happened at Wimbledon. It happened in New York. It happened here.

"I’m still young, so I got time. I definitely have some figuring out to do for myself."

However, the German received some kind words of advice from the perfect man after his loss - Roger Federer.

The two players bumped into each other in the locker room, before Federer successfully secured his passage to the fourth round with a straight sets victory over Richard Gasquet.

And the Swiss revealed exactly what he told Zverev to do, in order to improve his performances in the big events in future.

That starts, Federer believes, by lowering his expectations.

"I just think it’s important to sometimes take a step back and actually see the good things you’ve done, give yourself time, maybe set the bar a bit lower. First let’s maybe try to look for a quarters or a semi-finals, not just right away think coming to the Australian Open, US Open, I have to win this thing.

"I know people talk, but for the player, it’s not easy if you’ve never been there. I remember I had a hurdle to pass the quarters. I only did that back in 2003 for the first time. I was 22. Either I played quarters or I lost first round.

"That’s what I told Sascha. I said, 'Be patient about it. Don’t put yourself under unnecessary pressure. Learn from these mistakes. Whatever happened happened. Unfortunately you have to believe in the process you’re right now in. You had a good off-season. You’re working hard. You’re doing the right things. It’s maybe not paying off at the slam level, but just stay calm, don’t dig yourself in a hole.'"

It was a classy thing to do from the 19-time Grand Slam champion, whose words will no doubt have a profound effect on Zverev's game.

It shows just how brilliant a sportsman Federer is, going out of his way to help a fellow professional, who Federer said "looked crushed" after his defeat.

"I just thought some nice words would maybe cheer him up, get him over the loss a few more hours earlier than it normally would," he continued.

"It’s supposed to hurt. I’m sure it did. He looked crushed when I saw him.

"I gave him a tap on the shoulder and said, 'C’mon, it’s not too bad. It could be worse.'"

It's no wonder that Federer is considered the greatest man to ever play tennis when he does brilliant things like that.