Just watched the last round from youtube. I don't have any bias against any of these boxers. What happened looks like an injury sustained from a non-boxing move, so whether the referee thinks that Hopkins is faking it (given his history) is irrelevent. It should have been a no decision or no contest.
One of the TV angle shows how the referee saw the fight. Look at the link at 7:27. (Hope the video hasn't been taken down when you get to it).
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