Barroso, Kevin Mitchell's opponent, looks like a serious sparko merchant (there's several fights on youtube). He's nothing but a straight left hand (southpaw) but Manny Pac couldn't beat the top guys because of that back in the day... until he chinned them all out of course.

Mitchell will either totally outclass him or get ironed out. Can't see how it will go the distance. Under 9.5 rounds is odds against. Be surprised if it goes past six.