Charismatic world champion Jermell Charlo looks to make boxing history when he defends his WBC, WBA and IBF belts against WBO champ Brian Castaño. The two stars step on the scales for the final time ahead of their highly anticipated battle. #CharloCastaño is Saturday at 9PM ET/6PM PT on SHOWTIME. #SHOSports #CharloCastano #WeighIn #ShowtimeChampionshipBoxing Subscribe to the SHOWTIME Sports YouTube channel: https://goo.gl/s8CWVT Follow SHOWTIME Sports: Facebook: https://www.facebook.com/ShoSports/ Twitter: https://twitter.com/SHOsports Instagram: https://instagram.com/shosports Snapchat: https://www.snapchat.com/add/shosports Official Site: https://www.sho.com/sports Follow SHOWTIME Boxing: Facebook: https://www.facebook.com/ShoBoxing Twitter: https://twitter.com/ShowtimeBoxing Instagram: https://instagram.com/showtimeboxing Tumblr: http://showtimeboxing.tumblr.com/ Follow INSIDE THE NFL: Facebook: https://www.facebook.com/insidetheNFL Twitter: https://twitter.com/insidetheNFL Instagram: https://www.instagram.com/insidetheNFL/ Follow BELOW THE BELT with Brendan Schaub: Facebook: https://www.facebook.com/BelowTheBeltSHO Twitter: https://twitter.com/btbshowtime Instagram: https://www.instagram.com/belowthebelt/ Follow SHOWTIME: Facebook: https://www.facebook.com/showtime Twitter: https://twitter.com/SHO_Network Instagram: https://instagram.com/showtime/ Youtube: https://www.youtube.com/user/SHOWTIME Official Site: https://www.sho.com/