Australian Open 2017 Day 4 Live Score Match Updates

The contest between Rafa Nadal and Marcos Baghdatis is underway.

Result updates:

Caroline Wozniacki defeats Donna Vekic 6-1, 6-3
Serena Williams defeats Lucie Safarova 6-3, 6-4
Milos Raonic defeats Giles Muller 6-3, 6-4, 7-6
Dominika Cibulkova defeats Su-Wei Hsieh 6-4, 7-6

Denis Istomin YOU GIANT KILLER - He has defeated Novak Djokovic 7-6, 5-7, 2-6, 7-6. 6-4

Novak Djokovic is in big trouble here and he is staring at an exit from the Australian Open. He is down 5-3 in the fifth set and will now serve to stay in the match.

Gael Monfils has defeated Alexandar Dolgopolov in an exciting encounter.

He does it!!!! Istomin has taken this match to the fifth set by winning the fourth in a thrilling tiebreak.

Novak has levelled proceedings by holding his serve. It is 5-5 in the fourth set and Djokovic can still avoid going to the fifth.

Istomin holds serve to lead 5-4 in the fourth set but Novak can draw level by holding his serve.

Just when you think he is down, Djokovic shows why he is World No. 2. He breaks Istomin and now is serving at 3-4 in the fourth set with a chance to level.

Istomin s turning on the screws here and has taken a 4-1 lead in the fourth set. This looks like we are going to a fifth. Brilliant from Istomin.

Istomin serves first in the fourth set and if he can get an early break, he has a chance of going into the fifth.

He does it. Novak Djokovic takes the third set and Istomin is looking out of sorts.

As the match is progressing, Novak Djokovic is gaining more and momentum. He is forcing Istomin to work really hard. He is now serving for the third set. (6-7, 7-5, 5-2)

Djokovic has upped his intensity and pace at the right moment. Forcing Istomin into a forehand error, the Serb has carved out his first break of the third set to lead 2-1.

It is an error-filled third set so far and they are locked at 1-1 currently.

Djokovic has served out the second set successfully, 7-5. The two players are now tied at one set apiece.

And the second seed BREAKS!!!!! It is 6-5 for Djokovic!!

Now Djokovic has a break point on the Istomin serve. There was never any doubt about it!

And the Serb levels it at 5-5 just like a champion!

That is exactly what you expect from the six-time Australian Open champion!!!!

And he saves the second with an ace!

Djokovic saves one with a big forehand winner!

Would you believe it? Istomin now has two set points!!!!!!

Getting back to the Djokovic match now. He is now serving to stay in the set at 4-5.

UPDATE: Meanwhile, World No. 116 Jennifer Brady has caused a big upset as she sends the British No. 2 Heather Watson home with a 2-6, 7-6(3), 10-8 win.

The second set is now evenly poised at 3-3. Djokovic is surely finding it hard to make any major breakthrough here.

Denis Istomin has taken a 1-0 lead in the second set by holding his serve.

Denis Istomin is one set up against Novak Djokovic and the Serb will now have to dig deep to come out of this.

This is quite stunning!!!! Novak Djokovic has dropped the first set 7-6 after an intense tie-breaker.

A couple of unforced errors from both and Djokovic is now leading 8-7 in the tie breaker.

Denis Istomin has made a stunning comeback and is now leading 6-5 in the tie-breaker. This is riveting Tennis from the Uzbeki lad.

Update: Meanwhile, Milos Raonic is cruising against Gilles Muller (6-3, 5-4)

The match has gone into a tie-breaker and Novak has taken the first two points. It is 2-0 to Novak

Novak shows his class and takes the 11th game. He is now leading 6-5 in the first.

This is beautiful tennis from both Djokovic and Istomin and the first set is level at 5-5 with Djokovic serving.

Djokovic, realising this game's importance, has stepped up the ante. He manages to get a break point but Istomin saves it. Crucial game this with Istomin leading 4-3 in the first set.

WOW!! Novak Djokovic's serve has been broken and Istomin is now serving to go 5-3 up in the first set.

Denis Istomin has somehow managed to save a couple of break points and level the first set 3-3 against Novak Djokovic

Update: Grigor Dimitrov has raced to a 4-2 lead in the fourth set of his match against Hyeun CHung. (1-6, 6-4, 6-4, 4-2)

Denis Istomin is serving well in his game against Novak Djokovic and is making the Serb work hard for every point. The first set now stands at 3-2 to Novak.

UPDATES: Milos Raonic has taken a 4-1 lead in the first set of his match against Gilles Muller, Grigor Dimitrov has won two consecutive sets after dropping the first to be in the driver's position against Hyeon Chung (1-6, 6-4, 6-4, 1-2) and David Ferrer has leveled his match against Escobedo by claiming the second set and is now leading in the third (2-6, 6-4, 1-2).

Djokovic is now leading 2-1 with Istomin serving at 40-40 in the fourth game.

Djokovic saves another break point to take the first game on his serve. Pheww!! That was a bit unusually long for the first game of a match. If this game is anything to go by, we are in for a decent match. Novak leads 1-0 in the first set.

The first game of the Djokovic-Istomin contest is turning out to be an interesting one as Novak Djokovic has saved a break point and it is now 40-40.

Indian duo of P Raja and Divij Sharan are fighting to stay in the match after losing the opening two sets of their match against J Eysseric and F Martin.

The game between Novak Djokovic and Denis Istomin is underway and the latter has raced to a 30-0 love lead in the first game on the Serb's serve.

Meanwhile, it is all square in the match between Grigor Dimitrov and Hyeon Chung with both players taking one set apiece. The Bulgarian is leading 4-3 in the third.

The match between Novak Djokovic and Denis Istomin is about to start and it has the potential to be an exciting clash.

🤝🤜🏻💥🤛🏻 @rogerfederer @AustralianOpen pic.twitter.com/JhkvH5LsVr
— Stanislas Wawrinka (@stanwawrinka) January 18, 2017

No.17 @CaroWozniacki sets up a 3R clash with Konta after defeating #Vekic 6-1 6-3 🤜 #AusOpen pic.twitter.com/o5D8As1ETS
— #AusOpen (@AustralianOpen) January 19, 2017

Australian Open 2017 Day 4 Live Score Match Updates

It's Day 4 with Djokovic and Nadal up for Round 3!