Jermell Charlo wipes out Brian Castaño to unify all four world titles at 154lbs

• Jermell Charlo scores 10th-round knockout over Argentinian
• Charlo becomes seventh undisputed champion of four-belt era

Jermell Charlo had to exercise incredible patience during his quest to become the first undisputed super welterweight champion.

After a split draw in his first bout with Brian Castano last year was followed by a three-month postponement of their rematch because of an injury for Castano, Charlo had to wait again Saturday night because Castano showed up late to the arena.