Katie Taylor was crowned undisputed lightweight champion on Sunday. But almost immediately, there was controversy. In this week's The Explainer, we're joined by The42.ie's Gavin Casey to talk us through what happened. He was ringside on the night and wrote the definitive examination of the aftermath of the win for The42.ie.Joining him in studio is presenter Sinéad O'Carroll, who also interviews longtime boxing US-based promoter Lou DiBella about the boxing world, Katie's win, and how judging works.