IBF welterweight champion of br the world Shawn "Showtime" Porter is in San br Carlos, CA at the Undisputed Boxing Gym br preparing for his first title defense April 19 at br the DC Armory in Washington, D.C. against br Paulie "Magic Man" Malignaggi. Unusual for champion. Maxboxing.com takes you into Porter's camp at San Carlos, CA's Undisputed Boxing Gym on a day of sparring.