Let’s not underrate Canelo here. Yes Zaggers volume could give Canelo some issues but I see Canelo catching him and hurting him badly. Zaggers is not as technically and defensively sound as Bivol and also is probably smaller.
Here are some great ideas for Rummy to make another episode of "Dream fight". The only problem is that Canelo has not yet retired. IMO Calzaghe wins on points.
After Joe enters the ring, they play his national anthem. Then they play Canelos. Canelo walks into the ring. The announcer gives Joes name and credentials. Next from the announcer, “all three judges have scored the fight the same, 120-106 for your winner….Saaaauulll, CaneeelllooAaaaalllvvaareeezzzz.“. Canelos biggest fans argue it should have been a stoppage instead.
More like the Lacy fight. 50-50 chance of a stoppage. Canelo would not be able to deal with Calzaghe's work-rate.