Callum Simpson speaks ahead of his rematch with Troy Williamson this Saturday, reflecting on his first professional defeat, his decision to team up with Rob McCracken and his preparations for the rematch. Simpson also responds to Williamson's frustrations over the rematch clause and insists his rival should be grateful for the two biggest paydays of his career. He also discusses his mentality after losing for the first time, watching the stoppage back, moving forward with Rob McCracken and his ambitions of becoming a world champion.

Callum Walsh discusses his journey from Freddie Roach's Wild Card Gym to Manny Pacquiao's new gym in Hollywood, his relationship with Dana White and his role in the rise of Zuffa Boxing.