Mike Costello
BBC Sport boxing correspondent

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"I just think the calibre and pedigree of Ortiz, even at 40, means there is enough skill and guile to give Wilder problems, certainly for the first half of the fight.

"What I like about Wilder is that he gets it done. Even against Fury you can argue he didn't deserve the draw but I have watched back that replay of the 12th-round knockdown many times and the way he throws the two punches, he follows Fury's chin. It is carefully placed work and yet he is often dismissed as a wild swinger with no boxing ability.

"He can be out-boxed by Anthony Joshua and Fury but against any one of the heavyweights in the world Wilder is no less than an even money shot."

Tony Bellew
Former world champion in his BBC Sport column

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Wilder is brilliant, box office and confusing all in one package.

He reminds me of former Premier League player Paulo Wanchope, who seemed to have arms and legs flying at all angles yet excited people and was a threat.

Why it is so confusing is if I was taking a kid to the gym to teach him how to box, I would start with the fundamentals of transferring your weight from your back foot, up, through your body and out to your connecting fist.

Wilder, by comparison, is in the air, feet off the floor, hits someone with a punch from a crazy angle and they are out. I simply cannot explain that and boxing is the only thing in the world I truly understand.

Right, we are switching focus to Deontay Wilder for five minutes and then it's all thing Smith-Ryder...

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Following on from that 12-Second Challenge video, here is the current leaderboard.

We've had one or two complaints that Carl Frampton and Josh Warrington were not throwing the big shots needed. We went to VAR and decided they stand.

Shout out to Rocky Fielding, Liam Smith and Martin Murray for their variety and heavy hands.

Again, try it and send a video to #bbcboxing.

Some of you will have already seen our 12-Second Challenge over recent months.

Very simple, 12 seconds rather than 12 rounds, one punch bag, land as many as you can.

No tippy, tappy, plenty of big hitting.

Watch Callum Smith above and then go to your gym, garage or your nearest punch bag and send the video to #bbcboxing.

Let's see what you've got...

You can expect a Callum Smith ring walk in the next 20 minutes or so as Craig Glover has just been stopped by Chris Billam-Smith, who takes the Commonwealth title at cruiserweight.

Let's get Sweet Caroline playing and get down to main event business...

Look at this group of smartly dressed gents in Liverpool.

@Totumtalks: "The Callum Smith fan club on their way to the arena earlier!"

Tremendous trouser-game gents. Well played.

Image source, Totumtalks

So given it's a big heavyweight night, who do you see holding the four heavyweight titles by the end of 2019?

Send your answers and reasons to #bbcboxing.

Image source, Getty Images

And when Callum Smith and John Ryder are done in Liverpool, we will head over the the cultural experience that is the MGM Grand in Las Vegas at around 04:00 GMT for live-text coverage or Deontay Wilder v Luis Ortiz.

Their first encounter was a bit chaotic and Ortiz nearly shocked the world. It's a big few weeks for the heavyweight division so what odds it starts with something thrilling?

Image source, Reuters

Callum Smith watched his three brothers box for world titles and when his time came, he grabbed the WBA world super-middleweight belt from George Groves last year.

No mean feat.

Now there is talk of Saul 'Canelo' Alvarez, of Gennady Golovkin, of fights at Anfield... and yet one bad night can take it all away.

John Ryder wants to be the dream snatcher on this November night in Liverpool. He knows he has a big ask before him but let's be honest, anything can happen in this game.

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From Liverpool to Las Vegas, we have a night in store.

A certain world super-middleweight champion takes his title to his home city for the first time. A win could set up colossal fights and possibilities.

And as we wipe the sleep from our eyes, Luis Ortiz dare not blink as Mr Wilder packs a punch or two.

Every blow of it will be covered here and you can even listen to superb commentary from Liverpool's M&S Bank Arena too.

Drink it in.

You've heard my instructions, protect yourself at all times.