I see it ending later as Beterbiev is past his best imo and Smith is no slouch. Still I think his lack of inside game will play right into the hands of Beterbiev in this one.
I think Smith can make it to round 10. He hasn't shown a poor chin but he has shown a total reluctance to engage when he's outgunned. The Canelo fight was a sorry sight. If Beterbiev was five years younger I'd pick him by KO in 4 a la Cleverly.
I think it will go to the distance purely because Smith will crap himself after he gets hit by the first shot by Beterbiev, and Smith will run all fight but still lose every round, and simply take his cheque, save punishment, accept that he is the inferior fighter.
Yes; Smith has a decent chin and shells up when hurt, that makes him hard to knockout early. I think Beterbiev gets it done late.
I'd say it could last until around the 8th before Smith completely folds. As others have said, Smith has a lack of inside game - as exploited by Ryder when Ryder beat Smith. Beterbiev will take advantage of this as well.
Beterbiev is furious with all the recent accusations and sly remarks from Eddie Hearn and Smith brothers I am predicting Callum gets beaten up before getting KOd
Only if Callum goes in there to slug it out a la Joe Smith Jr. He won´t so this goes beyond at least 8 rounds before Beterviev gets the stoppage.