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Now: Nick Kyrgios 5-7 6-4 3-6 7-6 (7-2) 6-4 Ugo Humbert
Simona Halep fights back to beat Ajla Tomljanovic 4-6 6-4 7-5
Novak Djokovic beats Frances Tiafoe 6-3 6-7 (3-7) 7-6 (7-2) 6-3 to reach third round
Serena Williams & Naomi Osaka through but Bianca Andreescu & Petra Kvitova knocked out
Dominic Thiem wins in straight sets, Stan Wawrinka loses in five
Day three from the Australian Open at Melbourne Park
Halep 4-6 6-4 5-5 Tomljanovic*
Every time Simona Halep is down, she finds a way back. Such a fighter. The Romanian turns this one around to 40-30 on serve and then stings down a wrist-rattling effort to hold and make it 5-5.
*Halep 4-6 6-4 4-5 Tomljanovic
Another double fault from Simona Halep.
Big chance for Ajla Tomljanovic here, she's two points away...
*Halep 4-6 6-4 4-5 Tomljanovic
Halep leaves a forehand short and Tomljanovic pounces on it with a fierce winner.
15-15.
*Kyrgios 5-7 6-4 3-4 Humbert
I suspect a few of the Aussies in the John Cain Arena are following the Tomljanovic drama on their phones.
A little quieter there now. The mood is also simmered by Humbert keeping his nose ahead with a hold to love.
*Halep 4-6 6-4 4-5 Tomljanovic
Superb from Simona Halep, great line and depth and she forces Ajla Tomljanovic long to break back.
We're back on serve!
Image source, Getty ImagesHalep 4-6 6-4 3-5 Tomljanovic*
Big serve, and she's on the board. That should settle Ajla Tomljanovic, but she's up against Simona Halep... and the Romanian fires in forehand winner to earn two break points.
Halep 4-6 6-4 3-5 Tomljanovic*
The Australian thuds long, those nerves must be jangling, and then double faults. 0-30.
Halep 4-6 6-4 3-5 Tomljanovic*
Right then, what a moment for Ajla Tomljanovic on home soil, serving for the match against the second seed...
Halep 4-6 6-4 3-5 Tomljanovic*
Another brilliant point and it's Simona Halep who comes out on top of a gruelling exchange to edge to 40-30. Ajla Tomljanovic goes long with her next return and Halep holds.
Kyrgios 5-7 6-4 3-3 Humbert*
All the drama is over on Margaret Court Arena at the moment.
Over yonder on John Cain Arena, Kyrgios and Humbert have oiled up the service gears and are easing through them.
*Halep 4-6 6-4 2-5 Tomljanovic
Double fault from Simona Halep, but she responds with some huge hitting from the baseline.
30-30.
*Halep 4-6 6-4 2-5 Tomljanovic
Simona Halep pops a forehand just into the tramlines but hits her spot with a backhand off the next.
15-15.
*Halep 4-6 6-4 2-5 Tomljanovic
So Ajla Tomljanovic is a game away from knocking out the second seed...
Simona Halep needs a huge service game here.
Kyrgios 5-7 6-4 2-2 Humbert*
Looking like a cracking evening for the Aussies to be sat in front of the telly with Channel Nine on.
Maybe bring the bedroom telly into the living room too. One with Kyrgios on, Tomljanovic on the other.
Kyrgios is pushed in his service game but, with his family among the JCA crowd and regularly standing up to show their support, manages to hold.
*Halep 4-6 6-4 2-5 Tomljanovic
Brilliant. Tomljanovic takes all the sting out of a Halep forehand with the deftest drop shot.
Advantage the Australian. And this time she holds!
Halep 4-6 6-4 2-4 Tomljanovic*
Too much on the backhand from Tomljanovic and Halep has dragged this game back to deuce.
Halep 4-6 6-4 2-4 Tomljanovic*
Deft hands from the Australian, who teases Simona Halep with another sliced drop shot that barely leaves the tarmac. Halep goes long with a forehand before Ajla Tomljanovic leaks a backhand narrowly wide. 40-30.
Halep 4-6 6-4 2-4 Tomljanovic*
Thwack!
Ajla Tomljanovic is all over the slower Simona Halep second serve and stings it back with interest.
A crucial break in the final set.
*Halep 4-6 6-4 2-3 Tomljanovic
And the Australian has three break points!
*Kyrgios 5-7 6-4 1-2 Humbert
Penny for Humbert's thoughts. He's the yin to Kyrgios' yang in this enthralling contest.
Calm, focused and, some might say, quite boring. But that's not a bad thing! Whatever works, eh.
And it is working for the 29th seed. Keeps his nose ahead with a straightforward hold.