Prediction: Duke and Pennington have the fight of the season, which is why Dana took them to the Mayweather fight. He probably knew it was the best fight so he took them there without the fan vote. I also think that Rakoczy gets the only KO of the season, so she won KO of season by default, which is why she was at the fight.
I think Duke wins and fights Rakoczy in the finale or semis. In Jessamyn's first blog, she stated that her coach (Scott Elliott) told her that Rakoczy would be a tough challenger in the house. I think this was foreshadowing because I dunno why else she would put that in the blog. I am a big Duke fan and former training partner and I would love to see her win the whole thing.
Also, Shayna and Jessamyn are good friends, so knowing how emotional Shayna is, she would not say "man what a fight!" if Jess lost. It would have killed her emotionally, worse than when Roxanne lost.