Who has the best chin in boxing today? Who can take a punch like no one else? Two-time world champion and Showtime Boxing analyst Paulie Malignaggi gives the answer in the first installment of our "Paulie Malignaggi Answers Boxing's Burning Questions" series. He breaks down why former 147-lb world champion & current top contender "Showtime" Shawn Porter can slug it out toe-to-toe with the best of them.