Hatton's chin CLEARLY is not what it was, having gotten taken out in two recent fights, one by a guy not particuarly known as hard hitter, and the other by a smaller guy coming up in weight. Ricky Hatton's whiskers are definitely suspect at this point in his career.
And when he was hurt by Collazo? Hattons chin is how its always been, he just found someone who can hit hard, hit fast and land.