Christy

Sydney Sweeney

As Christy Martin

Ben Foster

As Jim V. Martin

Merritt Wever

As Joyce Salters

Katy O'Brian

As Lisa Holewyne

Ethan Embry

As John Salters

Jess Gabor

As Rosie

Chad L. Coleman

As Don King

Tony Cavalero

As James “Shortdog” Maloney

Miles Mussenden

As Richard Christmas

Gilbert Cruz

As Miguel Diaz

James Self

As Coach

Bill Kelly

As Larry Carrier

Walter 'Buddy' Carter

As Walt

Coleman Pedigo

As Randy Salters

Tamara Hopkins

As Waitress

Bryan Hibbard

As Big Jeff

Jay Croft

As Douglas

Marvin Laviolette

As Jessie Robinson

Emma Jackson

As Bonnie

Valyn Hall

As Dana Jamison

Adrian Lockett

As Mike Tyson

Stephanie Baur

As Deirdre Gogarty

Braden Bunch

As MGM Ring Announcer

Courtney Grace

As Journalist

Mamie Garard

As B-Ball Teammate (as Mamie Keith Garard)

John R. Watson

As Mandalay Bay Announcer (as John Watson)

Carter Shaw

As Sports Journalist

Naomi Graham

As Laila Ali

Evit Emerson

As Weigh In Official

Brandy Renee Brown

As Hotel Housekeeper

Madison Hobbs

As Mississippi Ring Commissioner

Ben Aycrigg

As Rick Cole

Jordan Nelson

As ER Doctor

Kelly Ann Hoyle

As ER Nurse

Stephanie Benkovich

As Nancy

Arischa Conner

As Orlando Nurse

Myke Holmes

As Lawyer

Carrie Stauber

As Judge

Ryan Robertson

As Bristol Referee

DeeJay Sturdivant

As Bristol Referee

Anthony Bui

As Punta Gorda Referee

Joshua Lamboy

As Daytona Referee

Hank Quillen

As Referee Fred Steinweinder III

Brian Ashton Smith

As Mandalay Bay Referee

Matt Baiamonte

As MGM Referee

Kevin J. O'Connor

As Ring Announcer