Terence Crawford steps into the ring for the biggest fight of his career against Canelo Alvarez on September 13. Crawford, a four-weight world champion, is no stranger to the big stage. He has also held undisputed titles in two weight classes,

Terence Crawford and Saul "Canelo" Alvarez will be going head-to-head with UFC for their September showdown — abruptly throwing TKO's involvement with the fight into question.