I reckon former Cardiff 2nd row Craig Quinnell might be half decent, he's at least 6'6, massive reach, and was always getting in scraps, though he'd probably be a bit of a Danny Williams when it came to his weight though.

Lee Bowyer showed his fighting ways last season with Kieron Dyer, and he does have a lot of heart and determination. He'd also be good at winding up his opposition, which he does so well on the footie field.

Croatian tennis player Ivo Karlovic would have good reach and height advantage, but he's pretty skinny, so I imagine he'd be the tallest light-heavy/cruiser around.

And finally, the man I would most like to see in a boxing ring would have to be Craig Bellamy. If he wins, he's Welsh and I'd have another fighter to put my support behind, but he can be a bit arrogant and lippy, so if he took a beating it might shut him up a little!