Jermell, (not to be confused with his similarly named identical twin brother Jermall who recently retained his WBC middleweight world belt against Juan Macias Montiel), comes into the fight hoping to become the first-ever undisputed super welterweight champion in the four-belt era. Widely seen as the best fighter of his generation in this division, the Louisiana fighter last stepped into the ring back in September, beating IBF and WBA champion Jeison Rosario in eight rounds to set up this potentially history-making fight. His Argentinean opponent tonight my have an underdog billing, but shouldn't be underestimated. Castano beat Patrick Teixeira via an unanimous points decision back in February with a statement-making performance to claim the WBO belt and will be determined to maintain his 100% record here.