Miles Teller as Vinny Pazienza

Aaron Eckhart as Kevin Rooney

Katey Sagal as Louise Pazienza

Ciarán Hinds as Angelo Pazienza

Ted Levine as Lou Duva

Christine Evangelista as Ashley

Amanda Clayton as Doreen Pazienza

Daniel Sauli as Jon

Tina Casciani as Heather

Gary Galone as Caesar's Pit Boss

Allie Marshall as Sport Reporter / Fight Attendee

Liz Carey as Charity

Julie Ann Dawson as Ring Girl

Gia Skova as Duran Ring Girl

Jordan Gelber as Dan Duva

Jay Leno as Himself (uncredited)

Stephanie McIntyre as VIP Supporter

Portland Helmich as Reporter at Weigh-In

Tanja Melendez Lynch as Woman at Twin River

Susan Garfield as Casino Gambler

Sully Erna as Caesar's Blackjack Dealer

Gene Amoroso as Anthony

Kimberly Howe as Doreen's Friend

Dante Palminteri as NBC Late Night Page

Mark Burzenski as Event Security

Ashley Tramonte as Ringside VIP

Keith Jeffrey as Manny

Tom DeNucci as Tommy

Dicky Eklund Jr. as Burchfield's Waiter

David Gere as Scott Pryor (uncredited)

Arthur Hiou as Head Judge

Gary Tanguay as Reporter in Caesar's Tunnel

Noelle Trudeau as Foxy Lady Stripper

Chad A. Verdi as Chad (uncredited)

Mario Carneiro as Event Goer (uncredited)

Mathew Morin as Color Commentator (uncredited)

Jeff Kamps as Ringside Gambler

Colleen Kelly as Sports Reporter (uncredited)

Kent R. Williams as Contruction Worker (uncredited)