Katie Taylor and Amanda Serrano have developed the greatest rivalry in the history of women's boxing with two fantastic fights. The women are set to face off one more time, headlining a card from New York's Madison Square Garden this Friday night with Taylor's four junior welterweight championships on the line.

Here's what you need to know ahead of the unprecedented trilogy bout between Katie Taylor and Amanda Serrano from Madison Square Garden.

Katie Taylor and Amanda Serrano met on top of the Empire State Building with their trilogy bout just days away. The boxing stars look to settle the score once and for all when they fight at Madison Square Garden on Friday.