Jeison Rosario fought the fight of his career when he upset Julian Williams and captured the WBA and IBF Super Welterweight titles in his last fight. He looked much better technically and physically than ever before. A very different fighter from the guy that was stopped in 6 rounds by Nathaniel Gallimore. It did help him that Williams left eye was cut and he had difficulties seeing properly. But the fight might have played out the same way even without the cut so all credit to Rosario. Jermell Charlo is at the very top of the division and the only loss he had against Harrison, he avenged in brutal fashion in the rematch. Jermell is very steady and has become a very big puncher in the division. Technically in this fight you would have to favor Charlo because we saw in Rosario´s fight against Williams, that even though we said that he looked completely different in his offense and physicality, there was an area where he was lacking and that was his defense. Williams was landing right hand after right hand, some of them flush on the chin. To Rosario´s credit he was able to take them that night but he might be hurt badly if it is Jermells right hand on the chin. We think Jermell will connect with a lot of right hands and they will have a big impact on Rosario as the fight plays on. Another area where jermell has an advantage is because he never has an off night. Rosario has had a lot of ups and downs and it is difficult to know exactly which version will show up. (sign in to view our prediction & pick).