You are silly. Calzaghe was the best fighter to have ever fought at 168 and beats everyone including Jones Jr and Toney. If you cannot stop him, then he beats you and nobody could stop him. There is no evidence to suggest Kovalev who hasn't been stopping anyone for a few years now would stop Calzaghe. Fighters have put him down, but he outhearts Kovalev and exhausts him. Don't forget how quick Calzaghe was, you cannot prepare for a style like that. Kovalev would have a hard time and would get slapped about. There is nothing to suggest Ward would be a problem for Calzaghe. He can make it as dirty as he likes, but he doesn't have power and cannot outland Calzaghe. Ward would be an easier fight than Kovalev IMO. Kovalev would be tricky early on with a good jab, but once he is worn down, Calzaghe takes over and frustrates him.
The main flaw of Kov and Ward is that they are low output fighters. It makes it even when they fight, but put a Calzaghe in and it's a different level of fighter.
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