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Stay tuned for a wrap of the fights.
Round 3: A faster start to this round as Jones lands a left hook early.
Jones lands the takedown and has Gustafsson exactly where he wants him.
It's over!! Jon Jones is back!!!!!
A third round TKO
After taking the Swede to the floor Jones works his way to a good position and land three or four shots to the head before ending the fight with a win.
Round 2: back at it, Jones told to not rush the takedown
Jones goes for another takedown but great work from Alex to defend. Not alot happening from Alex's corner.
Just as I say that, Alex throws a few punches, a poke to the eye on Jones means the two fighters will get a small rest. We are back on now.
Gustafsson putting on the pressure throughout this round, another close one.
Gustafsson connects with a right hand towards the end of the round, Jones working the kick to the lower leg of the Swede. Newshub score: 10-9 Jones, 20-18.
Round 1: Here we go, re-match! For the lightheavyweight championship
Jones straight away goes for the knee to the head, A slow start with both fighters easing into the fight.
A cautious start from both guys.
Jones goes for the take down but great defence from Alex.
Newshub Score: Jones 10-9 (very close)
Here comes Jon Jones, entering the arena to We are the champions by Queen.
Up next: The main event! Jon Jones vs Alexander Gustafsson
If we can get a re-match anywhere close to their first fight it will be incredible.
Round 1: Here we go!!
Both fighters are going for the KO early on and Nunes connects early on!
It's all over!!!!!!!! Amanda Nunes has just knocked out Cris Cyborg!
A first round knockout for Amanda Nunes
Nunes could become just the third UFC fighter in history to hold a belt in two different weigh classes.
It's the top two pound-for-pound ranked women's fighters going head-to-head.
One of the bog ones is next!! Cris Cyborg (c) vs Amanda Nunes
It's over!! Michael Chiesa has won by way of submission making Carlos Condit tap with a kimura lock
We are inching closer to the main event! Next up: Carlos Condit vs Michael Chiesa
The winner by unanimous decision: Corey Anderson
Next up: Ilir Latifi vs Corey Anderson
It's over!! the man who trains at City kickboxing has done it!! Alexander Volkanovski knocks out Chad Mendes in the second round.
Next up: Chad Mendes vs Alexander Volkanovski
The winner by split decision, Walt Harris!! close fight!
Next up: Andrei Arlovski vs Walt Harris
Its over! What a bizarre way to win for Anderson, she wins by TKO after kicking Zingano in the eye. Zingano stopped and Anderson went after Anderson. The ref stepped in and stopped the fight.
Next up: Cat Zingano vs Megan Anderson
Petr Yan wins by way of TKO in the secon round, dominating the entire fight.
Next up: Douglas Silva de Andrade vs Petr Yan
Ryan Hall wins by way of Submission, making Penn tap in the fist round.
The first fight on the prelim card is about to start - BJ Penn vs Ryan Hall
It's a rematch five years in the making as Jon Jones takes on Alexander Gustafsson for the now vacant UFC light heavyweight championship.
The first fight was an instant classic with the big Swede almost pulling off one of the biggest upsets ever seen inside of the octagon in a back and forth brawl.
Jones took the nod on the judges' scorecards but spent the night in hospital with a busted lip and bloodied face.
Their careers have been stagnant since, with Jones spending the majority of the last five years on the shelf due to various suspensions thanks to performance enhancing drugs.
Gustafsson has three wins from five fights since - all against the cream of the light heavyweight division.
In the co-main event Cyborg Santos defends her UFC women's featherweight title against bantamweight champion Amanda Nunes.
Newshub.