That is day 11 of the Australian Open in the books, and what a day it was.

Unfortunately it ended with the last remaining Australian men's singles player, Alex de Minaur, getting knocked out.

Earlier on two all-Australian mixed doubles pairs progressed to set up a true blue Aussie final. 

There once again was some incredible tennis and we now have our four semifinalists for both the men's and women's competitions.

And it is straight into the women's semifinals, so make sure you join us again tomorrow.

In his post-match press conference, Alex de Minaur has been open and honest about his performance and the future for his career.

"After playing some great tennis on home soil and gaining so much, you feel like you just have been slapped across the face, to be honest, to finish off like that," he said.

"It is disappointing. I don't want to leave like this, but yeah, I can only get better and come back stronger next year."

This is his fourth quarterfinal exit in a row at grand slam tournaments.

He said he feels within him, he can do better than that.

"It's pretty tough right now for me to sit here after this defeat and tell you that I believe I can go all the way," he said.

"But saying that, I do think that there are opportunities out there.

"I don't think my peak is making quarterfinals in a slam.

"I see other players that have made it further, have made semis, have made finals, and I do believe that I can be amongst them."

Two very exciting matches to come in the semifinals.

Who's your pick?

Hey Joe,

I assume you're referring to Ben Shelton's comments anticipating he'll be the second favourite in his semifinal.

The American 21st seed said after his four-set win over Lorenzo Sonego:

"Well, if it's the home favourite, Alex de Minaur, 100 per cent you guys can boo me, you can throw stuff at my head. I understand.

"And if it's the number one in the world, it'll probably be the same. I'm looking forward to it. I know I've got a few people out in the crowd who are gonna be pulling for me too."

Honestly, I'm not so sure the crowd won't be on his side against Jannik Sinner.

Up next for Jannik Sinner is a semifinal showdown against America's Ben Shelton.

Shelton advanced in four sets over another Italian, Lorenzo Sonego.

In the match he hit the fastest serve of the tournament to date, and Sinner knows the threat he will play from the service line.

"We played last year, some very tough matches because he is one of the best servers on tour and left-handed so a different rotation of the ball is coming," he said.

"Hopefully I'm ready, hopefully I can return as many as possible and trying to stay very concentrated about the game."

"It's going to be a great match also for you guys," he added speaking to the Rod Laver Arena crowd.

The crowd can expect more of this:

Jannik Sinner was all class as he advanced to the semifinals of the Australian Open.

He gave credit and praise to his opponent though, saying Alex de Minaur is a top player.

"He is a very tough competitor and is an amazing player," Sinner said.

"We know each other quite well now, we played last year so many times and we try to understand each other's game, trying to prepare ourselves in the best possible way.

"This kind of match, they can go quickly but also they can change very fast if I go down with the level of it and he takes the opportunity.

"I'm very happy about my performance today."

Sinner was rumoured to be suffering with pneumonia coming in to the quarterfinal.

He addressed that, kind of, in his chat with Jim Courier on court.

"Yesterday was a very easy day, I played just half an hour, 40 minutes with my coaches there, they gave me a good rhythm," he said.

"Talking about general physical (health), I feel like especially when you are young, you recover very fast."

"It was quite breezy and windy this afternoon so we went indoors, trying to hit the ball in the best possible way and that said, the result was awesome as we saw so let's see what's coming now in the semi-finals."

Game, set, match Jannik Sinner.

The world number one broke Alex de Minaur's serve to win the match.

He simply was a cut above the battling Australian.

You just have to admire it.

The match ends in straight sets — 6-3, 6-2, 6-1.

Jannik Sinner advances to take on America's Ben Shelton in the semifinals.

For Alex de Minaur, once again his best was not enough to take down one of the best.

Alex de Minaur has just shown his quality in that last game.

He held his serve and did so in style. There's fight in him still.

The Australian has Sinner on skates for a couple of those points.

He trails 4-1 in the third set.

We wish it was Demon time. Looks more like Sinner semifinal time.

The Italian has picked up a double break in the third set and now leads 3-0.

I've said it already, but it is warranted again — Jannik Sinner is in control here.

The Italian has once again started a set by breaking Alex de Minaur's serve.

A strong start to the third set for the defending champ.

"If he's got pneumonia, give me a case," John McEnroe says on Channel Nine.