Dimitrov beats Kyrgios 7-6 7-6 4-6 7-6 in fourth round
Bulgarian faces GB's Kyle Edmund in last eight
Edmund beat Andreas Seppi 6-7 7-5 6-2 6-3
Briton into first Grand Slam quarter-final
Nadal beats Schwartzman 6-3 6-7 6-3 6-3
Wozniacki through to women's last eight
And with that, it's time for us to wrap up our live text coverage.
Don't forget, you can catch the highlights of all Sunday's action from the Australian Open on BBC Two from 18:00 GMT.
There'll be plenty from this cracker, as well as wins for Kyle Edmund and Rafael Nadal and the best of the rest from the last 16.
On to the second week we go, as the quarter-finals await.
Until then...
So it is Grigor Dimitrov who will face British number two Kyle Edmund in the Australian Open quarter-final.
Any insight into how the Bulgarian will shape up against the 23-year-old from Yorkshire?
Not so much...
"I played him two weeks ago," said Dimitrov. "It's just another match. I am focused on my side of the court."
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (7-4) Kyrgios
So what's it like playing someone as unpredictable as Nick Kyrgios?
"You always have to be alert, what can you do? I just tried to block the ball," added Dimitrov.
"Step by step we are moving forward, match by match we are building up."
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (7-4) Kyrgios
Image source, AFPHere's third seed Grigor Dimitrov after his win over Nick Kyrgios: "Playing against Nick is always tricky, two weeks ago I lost against him.
"He was serving unbelievably, playing unbelievably. He fought really hard and it's one of those matches you have to take any opportunity you have.
"Even serving for the match I felt it wasn't over. I am just glad to get through that match."
Leon Smith
GB Davis Cup captain on BBC Radio 5 live sports extra
We saw everything in that match. It was amazing to watch and great sportsmanship from the players at the end.
Kyrgios played shots that aren't in the textbook but credit to Dimitrov to come through that. Incredible mental fortitude.
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (7-4) Kyrgios
Well, take a moment to catch you breath...
What a fantastic array of shots on show from both players, some sublime serving and near meltdowns from Nick Kyrgios.
Grigor Dimitrov just had a word at the net with him at the end there.
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (7-4) Kyrgios
Kyrgios saves the first, but what a passing forehand from Dimitrov that is!
He beats Kyrgios at the net, and takes the match!
Image source, AFPDimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios*
Magnificent from Dimitrov, backpedaling and curling a forehand winner just inside the baseline.
Kyrgios tries to go over his man on the next point, but Dimitrov volleys a winner at the net.
Three match points.
*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios
Wonderful hands from Kyrgios, but Dimitrov's defence is equally admirable.
The Bulgarian can't stop the home favourite's looping forehand into the corner, though.
But that's missed. Dimitrov sprints side to side to keep the ball alive, and Kyrgios hits the net.
Dimitrov leads 4-3.
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios*
Kyrgios finds the net from a punchy Dimitrov serve, and then goes long with a backhand on the next point.
3-2 Dimitrov.
*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios
Well, well, well.
Nick Kyrgios, leaning back, winding up a forehand and slamming it into the space left by Grigor Dimitrov.
He goes 2-1 up.
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios*
Fast and furious from Grigor Dimitrov - that's 1-0 off the serve.
*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-6 Kyrgios
Straight into the body of Grigor Dimitrov. That's feisty from Nick Kyrgios, like a fast bowler peppering a batsman.
The Australian takes it to 40-0, and nails a 36th ace - unbelievable.
We go to a tie-break.
Image source, AFPDimitrov 7-6 (7-3) 7-6 (7-4) 4-6 6-5 Kyrgios*
It's easy to get drawn into Kyrgios' antics, both marvelous and mind-boggling, and forget about Dimitrov - but the Bulgarian is playing some fantastic tennis.
He thunders through his service game to love.
Leon Smith
GB Davis Cup captain on BBC Radio 5 live sports extra
This could be one of the great stories if Kyrgios comes back from two sets down to win this match.
*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 5-5 Kyrgios
Now it's Nick Kyrgios serving to stay in the tournament.
Grigor Dimitrov drifts a return long, and Kyrgios roars it out of the back of the court.
He follows up with a massive forehand winner, then an ace and finally a wonderful crosscourt backhand.
Kyrgios holds.
Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 5-4 Kyrgios*
Nick Kyrgios is telling someone in the crowd to shut up. Rod Laver Arena falls eerily silent.
The Australian hits a superb backhand winner down the line.
He breaks back!
Image source, Reuters*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 5-3 Kyrgios
"Let's go Nicko," is the chant...
And Dimitrov double faults. Two break points Kyrgios.
*Dimitrov 7-6 (7-3) 7-6 (7-4) 4-6 5-3 Kyrgios
Grigor Dimitrov goes 15-0 up, but slices long. He dinks another backhand slice deep towards the baseline, but this time Kyrgios gets the better of the rally - 15-30.
Leon Smith
GB Davis Cup captain on BBC Radio 5 live sports extra
Absolutely astonished by that miss. Kyrgios is the most relaxed guy with the fastest arm and somehow he put it into the net.
But there were no lost causes from Dimitrov and he worked so hard to make him play another shot.