Hatton's defence is getting inside and clinching, then firing off to the body with the hooks, providing opening then to the head with uppercuts or that sweet left to the head he throws. Hatton cuts the distance down and gets in close precisely so he doesn't get picked off at distance due to his short reach. It's a form of defence different to having a high guard.
Hatton actually has pretty good defense. It's pretty subtle, but if you notice he weaves his head and body a bit to slip punches and counter/move inside. He's got a lot of skills.
People confuse defense sometimes with only keeping your hands up or blocking punches and tend to forget it also includes weaving and steping in and out of punches. I believe hatton's defense is the latter.
gatti knew he was goin to lose,watch his expression on the way to the ring,he didnt believe he cud win(sadly)the day b4 the fight he asked ricky hatton how would he fight mayweather?! he had no confidence,hatton&cotto wud be the exact opposite they'd go in fully expecting to win by any means neccasarry,not many people are but im going for hatton to pull off the upset in december
i would love to see mayweather lose. i dont think hatton will be the one to beat him, but i'd love to see it happen.