Kessler has a bad back and a dodgy rib.

I know when Sergey Tatevosyan was doing an open sparring session with the media, he caught Kess on his bad rib and he went over, doubled up in pain and they had to cut filming.

Also he struggles a lot with his back, as a younger lad he shot up quite tall & thin and his back is somewhat spongy - he has physio on it a fair bit.

Even at Calzaghe's twilight - he perhaps has a little tiny bit too much for Kessler.

Hopkins, Winky etc would be great fights for Kess at the minute.

But even if Cazaghe v Kess was made - i wouldnt be betting money on a Joe win.