There were plenty of unknowns heading into fight night, though Tszyu (28-3, 18 KOs) took over in the middle rounds against a gutsy, albeit diminished display from future Hall of Famer Spence (28-2, 22 KOs) over 12 rounds.

Fight week rumors suggested the Aussie would be positioned to challenge Erislandy Lara for WBA world title honors with victory here and naturally, he'd love a chance to emulate his new head trainer Jeff Fenech as a two-division champion just months after Liam Paro achieved the same accomplishment at welterweight.

If you've managed to stay this long, or been monitoring the updates throughout this night, thanks for joining me!

I'm off to watch Tim Tszyu's press conference and will be back with more coverage in the coming days, so stay tuned for more on The Ring's homepage as this weekend (somehow...) isn't over: Edgar Berlanga and Richardson Hitchins make their Zuffa promotional debuts in New York on Sunday night. What time is it? I need to sleep...

Spence lacked balance from the off and never really had his footing throughout, on a night where Tszyu showed enough encouragement to excite those hoping he can become a two-weight world champion. Achieving such a feat remains to be seen.

However, it also speaks volumes to how highly Spence is revered that a former world champion believes adding the 36-year-old to his resume trumps becoming a beltholder.

Some career for the 2012 Olympian, who I first grew a fondness for after watching him head to a partisan Bramall Lane in Sheffield, England with 27,000 spectators all booing him... then crushing dreams, scoring an 11th-round stoppage of local hero and then-IBF champion Kell Brook.

I watched every fight of his afterwards and was frustrated to hear about his problems outside the ring. Because for someone as supremely talented as Spence, there were few nights more electric than that one ten years ago.

There's something to be said about having former foe Shawn Porter commentate on your final hurrah, while the man in Terence Crawford who left you to hibernate, embrace family life and come back three years later was actively rooting for you ringside.

There were few nights more electric than those two for different reasons, with distinctly different outcomes, but he'd be a deserving Hall of Famer when up for induction in the coming years.

Watch this:

"Everyone treated me well, I appreciate everybody for coming out, it was a good showing, answered a lot of questions of myself, time to start a new life. I've got my faculties intact, my money is good and working for itself, everything is good, beautiful family, thank God I'm gracious enough to leave with my faculties intact, everything's going to go well. It's time to be home with my family and live that family life."

"160 is my new division, I feel strong, big blessing to my fans, this was one hell of a show and kudos to the No Limit boys, my sponsors, my team, thought the Tony Harrison win was good but let's go party! 100%, I had sleepless nights, what am I going to feel like facing a legend like that, I understand why he's one of the greats.

"It was advice from Jeff Fenech, get in there, two greats I'm trying to replicate are Kostya and Jeff, if I'm half as good as them, I'll be sleeping a great man. Talk to the boys, I'd love to fight for a world title, who's there? Lara, guys like that, I want to win a world title but beating a great like Errol Spence tops winning a world title for me.

"Sydney, Australia, the Tszyu legacy is continuing."

118-110, 117-111, 117-111 ... TIM TSZYU beats Spence via unanimous decision. Hard-fought victory after those first four rounds, but well deserved nonetheless. Post-fight interview time!

"Come on baby, let's go to work. We need this round, so let's go out there and take it. Overhand left, then an uppercut," Shields tells Spence and the visitor's corner stress urgency.

183-157 punch connect advantage in Tszyu's favor as the final frame begins and the Aussie is 12% more accurate too. Touch to the body, straight right to the head scores cleanly for Tszyu! Spence is just circling, a rather inactive round without much in the way of noteworthy punch connects from the American and he wins comfortably for me.

97-93 Tszyu through 10 rounds for me, Spence has dug deeper than many expected but he's just not sharp nor able to punish the moments where Tszyu does take breaks during these rounds. Clearly physically flagging, Spence has attacked the body well and caught the younger man on a couple occasions, though I'm not sure he won that either.

Tszyu has outlanded Spence 134-to-104 in the power punching department, though is admittedly less accurate with his advances (383 to 274 attempts). Spence lands some good body work, then an overhand right, though it's only when Tszyu allows him to ... earlier he was freezing, whether being methodical or pacing himself for 12 rounds.

Spence meanwhile, can't attack throughout a round anymore. He can only do it in stages, for bursts. Tszyu has bruising just below his left eye, as we head into the penultimate frame.

"Don't wait for him," is the instruction from Ronnie Shields in Spence's corner. Tszyu landed 20 power punches in the previous frame and while intermittent, these attacks are energetic bursts where anything could happen.

Spence's legs might not be sturdy but his punch resistance has held up nicely through some heavy artillery there, Tszyu crunching him with right hands and Fenech begs him for more as they head into the tenth.

"He doesn't want to be there anymore, I can see it. Your defense needs to still be there," Fenech implores. A reminder that Tszyu went the 10-round distance in decision wins over Anthony Velazquez and Denis Nurja in his last two outings, so a stoppage would be a welcome change against an elite, albeit faded, former champion.

Spence is again ticked off by the official for straying low, no point deduction though. Tszyu crunches some curling hooks, Spence does well absorbing them at close-range before holding his feet. Nice body shot by the Aussie!

Backing up without throwing much in the final half-minute, Spence was hurt there. 77-75 Tszyu for me.

84-76 edge in total punches favoring Tszyu through six rounds, as they head into the second-half. It's easy to say in hindsight and not the sort of decision Spence would have wanted, but yeah... a return fight would've served the former unified champion well. I'm not sure if he's feeling the pace or just permanently off-balance now, he hasn't stopped yet but is smothering his work more and isn't staying disciplined nor consistent behind the jab either.

Tszyu won't mind though, pinging him backwards and connecting clean with the right hand.

Tszyu starts the sixth better and digs a good body shot, then Spence returns fire at close-range.

Hard warning from the referee as Spence again strays low with a punch after biting on a feint, Tszyu snaps the American's head back with a stinging jab. 3-3 or 4-2 for Tszyu, as the home favorite's mum sits ringside with her head down and hands over the ears. Can't imagine how it must be, watching your son in a fight like this.

"Yeah, he's tiring," Tszyu acknowledges in the corner before the fifth begins. 38-38 through 12 minutes for me, Spence needs to get back behind his jab and nullify Tszyu's inside pressure if he wants to frustrate the 31-year-old.

Tszyu lands a sweeping right hand in the final half-minute of a potential swing round, not sure how you'd score that one. Listening to Fenech again in the corner, these are such good instructions.

"You've got to take the initiative, make him fight your fight, don't fight his ... catch and counter. Throw the uppercut and I promise, we'll go home," Jeff Fenech tells Tszyu between rounds.

He implores the Aussie to be more active with his punch output and actively pressure the older man, breaking the rhythm. Spence is ticked off for a low blow in the first minute of the fourth as their feet get tangled, Tszyu lands a nice right hand before missing wildly with a power hook.

Fight bubbling up now, Tszyu lands a right hand, another counter and these are scoring shots! Much better round from the former 154-pound champion, connecting on a body shot and flicks a straight punch, there's the variety.

Spence has racked up 14 body shots through eight minutes, Tszyu just one and he's smothering his attacks while shelled up behind that high guard. Spence throws combinations, then the home favorite lands a left hook and right hand in response.

I think this is the part where I admit predicting this would go the distance to earn maximum fantasy points from this week's picks ... no chance judging by how these punch advances have been through four minutes or so.

As I type that, Spence lands a nice left hand and continues subtly investing to the body. Tszyu by contrast is taking too long and squaring up at close-range, allowing the American to tag him. Probably 1-1 through six minutes.

Here we go then! Calm, ceremonial ringwalks and they're off, a little after 2.20pm local time.

Spence's legs don't look stable early, though he flicks out a nice left hand and is consciously trying to bait him in, while digging body shots downstairs. Tszyu responding with patience, pinging the jab and lands a big right hand! Oooof. Spence looks off balance, his stance is too wide and these vulnerabilities are there for all to see.

Sydney's Ahmad Reda (9-0, 6 KOs) was made to work for it, but nonetheless earned a 10-round points win (97-93, 96-94, 99-91) over Paul Fleming (28-2-2, 18 KOs) in a lightweight contested upgraded to co-main event billing.

The 23-year-old, who won and defended domestic honors at 140 pounds last year, offered to step in on a day's notice (yeah, you read that right) to face an overweight Stephen Fulton and keep him on the card, though No Limit rejected his well-intentioned plan, uncomfortable with allowing him to still earn a pay day after this week's events.

No surprises for guessing what Liam Paro's main event fight prediction is... but watch what the new 147-pound champion had to say from his ringside seat anyway:

Unsurprisingly, it's all over... another finish, Peters (8-0, 7 KOs) back to his savage stoppage ways and fared well against a tenacious, tough opponent at that.

"I got him with two body shots early but he was ready [to go], you could see throughout. I could touch the head all day so I did, he was a bit dumbfounded about the early stoppage but I was picking him off the whole time.

"You could see the blood was going everywhere. I was like, if that’s what’s landing, I’m going to keep throwing it and the ref's seen it, knew this guy's not coming back, was getting hit, caught and stopped it."

No Limit chief George Rose predicted he could be in world title contention within 12 months and while tougher resistance awaits him, it doesn't hurt him to remain active as he could return on the Nikita Tszyu-Ben Mahoney bill.

"It shows me what I'm doing is working, me testing the waters, for him to see that motivates me to push even harder and train harder. If he sees that, I wonder how many other people do too."

I've already declared this is last chance saloon with a fitting build-up line earlier, but CODE Sports have reported this week that Tszyu will be rewarded with an WBA middleweight shot against the aging beltholder Erislandy Lara (32-3-3, 19 KOs) provided he is successful here. He confirmed he'll continue to campaign at 160 pounds after this.

Actis is getting outworked, beaten to the punch in their exchanges and it's only a matter of time before this one gets stopped, five rounds into the contest. Peters' corner urged him to up the tempo after two (!!) rounds, which saw the 2024 Olympian intensify his attacks afterwards, unbothered by the South American's dirty boxing either.

Australia's former two-division world champion, Hall of Fame inductee Jeff Fenech, was among those publicly critizing Team Tszyu for a series of perceived errors in recent defeats - from a duty of care to tactical flaws - and now he's the new head coach.

He believes he has the seasoning to turn the tide and make him join IBF welterweight champion Liam Paro soon enough as the latest to emulate him as a two-weight titleholder.

"There were reasons that what happened against Fundora happened, and I’m here to change them," he told CODE Sports.

"I hope I can show the real Tim Tszyu. When he does things and does them right, it’s pretty awesome. Tim can do it, he just needed the right strategy and right team around him.

"Hopefully he still has that fire and energy. A lot of fighters have it one week, then it's gone. I just hope I've reignited the flame."

Peters (7-0, 6 KOs) believes he'll be Australia's next flagbearer sooner rather than later and the middleweight prospect is steadily building towards world-level contention in a division without much clarity among the elite.

After outboxing respectable contender Joeshon James to the tune of a wide 10-round points decision last time out, he faces his third unbeaten fighter and Argentine southpaw Actis is expected to give the decorated amateur some rounds. How will he fare?

"This is the changing room where I walked out before [beating] Tony Harrison, so it's a reminder of good times. This fight means everything to me, took a lifetime to get to this position. You wake up on this day, feels a bit different, I'm locked in but nice and relaxed, can't wait to get back in.

"The last 10 weeks have been hard work, now I want to show what I've been practicing in the bright lights. Very blessed to have a whole country behind me, this is all for them. I'm putting my heart on the line and we will come victorious."

How about a dressing room interview with Tim Tszyu while we wait for the next offering? Sure, why not.

Pictures don't quite do it justice, you must go back and watch the highlights. This will have to do for now:

Well, I did say after two rounds this barnstormer wasn't going the distance but didn't quite expect a one-punch knockout as explosive as that. Paulo Aokuso (11-0, 6 KOs) wins an IBF trinket title at 175 pounds and the sanctioning body's No. 13 contender will undoubtedly get a rankings boost next month after a thunderous finish.

The official time coming at 21 seconds into round 10, the 29-year-old southpaw threatened behind his left hand before delivering a knockout we'll be replaying for weeks and months to come against his career-best challenge here.

Wow! It's an even more dramatic outcome considering referee Les Fear warned him in the corner after round seven, you've got to show me something and defend more intelligently, suggesting it was the beginning of the end.

"Great fight, massive credit to my opponent, fell asleep in the beginning but as soon as I heard the crowd ... I had to show out. Get back to the drawing board, whatever No Limit has for me, send me the contract, I haven't received any yet," he says post-fight before sharing words with Anthony Mundine and Terence Crawford ringside.

Earlier in the week, the 36-year-old had this to say after Thursday's open workouts: "I'm feeling great. Sydney has been great to me. I'm happy to be here and ready to put on a great show. I'm gonna get the best Tim Tszyu. He's been training hard, he's extremely focused and knows his back is against the wall, so he's gotta come with it all.

"He says he's gonna press and put his will on me. That's his style. I'm gonna be one of the best versions of me. I'm focused, been training hard and I'm ready to go.

"Everybody comes in there to hurt the other guy. My plan is always to impose my will, beat them up and hopefully stop them. If the opportunity is there, I'm definitely gonna take it."

There's still about 20 minutes, give or take, left on this fight prediction poll and by my calculation, it's beautifully split...

36% of The Ring's audience (109 votes made) are backing a Spence KO/TKO on his return, while 27% think Tszyu will get the job done inside the distance. Combine their totals and it's 57-43 in the American's favor. Very close.

Two rounds down, this bruising opener is living up to the billing between unbeaten light heavyweights.

They exchange smiles after unloading with hooks at close-range just before the bell to end another busy frame, where both had successful moments and absorbed damage too. Don't want to jinx... but I'd be surprised if this goes the distance.

Anyway, where was I with this main event build-up? Ah yes, the home favorite arrived in the last hour and is currently relaxing with family in his dressing room:

"Years ago I remember watching Spence while I was fighting at small venues. Here we are years later and I get to do what I've always wanted: fight a legend who's come to Australia. I've got super confidence that I'm gonna beat him.

"Errol is Errol, he does things his own way. I respect what he's done and achieved, but there comes times in people's journey where they've had enough.

"I think I've picked the right time to face Errol but he's supremely confident, so this should be a good fight. I want to punch him everywhere as hard as I can. It's not personal, but of course I want to make this his last."

We've already had two undercard bouts. Tina Rahimi scored a four-round points win over Sacha Ryan Dryden on her professional debut, after Newcastle heavyweight Brandon Grach (6-1, 4 KOs) floored Ike Pluto (5-3, 1 KOs) en route to a five-round decision to kick start this shortened six-fight bill.

Paulo Aokuso-Luis Tejeda will kick off the main card with 10 rounds at light heavyweight in a few minutes' time.

On what was originally billed Australia vs. U.S, we're severely lacking main card entertainment through no fault of the promotion. Former two-weight world champion Jermall Charlo was denied a visa before his slated Koen Mazoudier bout while Stephen Fulton badly missed weight before a WBA 130-pound eliminator vs. Liam Wilson.

My name's Mosope Ominiyi and I'll be taking you through the night's events in Sydney, where Spence looks to spoil a homecoming parade for Tszyu as the ambitious Aussie looks to assert himself in a new weight division.

Good evening and welcome to The Ring's live commentary as former unified welterweight king Errol Spence heads to enemy territory, facing former WBO 154-pound champion Tim Tszyu on his return from a three-year layoff.