David Michôd Director, Screenwriter, Producer Sydney Sweeney Christy Martin Actor, Producer Ben Foster Jim Martin Actor Jess Gabor Rosie Actor Merritt Wever Joyce Salters Actor Ethan Embry Johnny Salters Actor Katy O'Brian Lisa Holewyne Actor Chad L. Coleman Don King Actor Tony Cavalero Jimmy "Shortdog" Maloney Actor Coleman Pedigo Randy Salters Actor Mamie Garard B-Ball Teammate Actor James Self Coach Actor Bill Kelly Larry Carrier Actor Miles Mussenden Richard Christmas Actor Tamara Hopkins Waitress Actor Bryan Hibbard Big Jeff Actor Jay Croft Douglas Actor Marvin Laviolette Jessie Robinson Actor Emma J. Jackson Bonnie Actor Valyn Hall Dana Jamison Actor Adrian Lockett Mike Tyson Actor Stephanie Baur Deirdre Gogarty Actor Braden Bunch MGM Ring Announcer Actor Courtney Grace Journalist Actor Gilbert Cruz Miguel Diaz Actor John R. Watson Mandalay Bay Announcer Actor Carter Shaw Sports Journalist Actor Naomi Graham Laila Ali Actor Evit Emerson Weigh In Official Actor Brandy Renee Brown Hotel Housekeeper Actor Madison Hobbs Mississippi Ring Commissioner Actor Ben Aycrigg Rick Cole Actor Jordan Nelson ER Doctor Actor Kelly Ann Hoyle ER Nurse Actor Stephanie Benkovich Nancy Actor Arischa Conner Orlando Nurse Actor Myke Holmes Lawyer Actor Carrie Stauber Judge Actor Ryan Robertson Bristol Referee Actor Michael Quinn Bristol Referee Actor Deejay Sturdivant Bristol Referee Actor Anthony Buisseret Punta Gorda Referee Actor Joshua Lamboy Daytona Referee Actor Hank Quillen Referee Fred Steinweinder III Actor Brian Ashton Smith Mandalay Bay Referee Actor Matt Baiamonte MGM Referee Actor Mirrah Foulkes Screenwriter, Executive Producer Kerry Kohansky-Roberts Producer Justin Lothrop Producer Teddy Schwarzman Producer Brent Stiefel Producer John Friedberg Executive Producer Andrew Golov Executive Producer Michael Heimler Executive Producer Harrison Huffman Executive Producer David Levine Executive Producer Clementine Quittner Executive Producer Ryan Schwartz Executive Producer Nick Shumaker Executive Producer Brad Zimmerman Executive Producer Germain McMicking Cinematographer, Cinematographer Matt Villa Film Editing, Film Editor Antony Partos Original Music Chad Keith Production Design Rachel Wilkin Set Decoration Christina Flannery Costume Design Erica S. Bream Casting Amanda Lenker Doyle Casting Ellen Lewis Casting Kate Sprance Casting