[woman] Becoming a champion…

[announcer 1] Katie Taylor! … starts with one thing.

[announcer 2] Amanda Serrano!

[woman] Heart.

[announcer 3] The first sold-out female headline boxing card in history!

[woman] That … is what carries you forward.

[announcer 4] It is time for the undisputed super lightweight championship of the world!

[woman] Because when you step into that ring, no matter who you are, it's a test. Against them, against you, against the world.

[announcer 5] We're waiting on pins and needles. We don't have to wait anymore.

[woman] There are no guarantees in a fight. The ones that don't go your way …

[announcer 6] Katie Taylor!

… they will always haunt you.

[commentator 1] A heavily disputed decision.

[commentator 2] This is gonna be an asterisk on Katie Taylor's legacy. I thought Serrano won the fight.

[dramatic music playing]

[woman] Through the hits, the cuts, the pain …

[unsettling music playing] … it's hard not to question yourself. To look in the mirror, re-up, reload, and go again.

[dramatic music resumes]

[commentator 3] Don't be surprised if this turns into a trilogy.

[commentator 4] One of the biggest matches in boxing history.

[woman] It's these moments that turn into momentum. A momentum that brings us together to create a movement. A movement that's real, that's undeniable, that's unstoppable.

[commentator 5] Look at this action!

[woman] And this movement right here … is heart. Because that's … what makes a champion.

[dramatic music continues]