Mark Wahlberg

Character: Narrator (voice)

Arturo Gatti

Character: Self (Archival Footage)

Micky Ward

Character: Self

Larry Merchant

Character: Self

Michael Buffer

Character: Self

Ida Gatti

Character: Self

Sofia Gatti

Character: Self

Charlene Ward

Character: Self

Dicky Eklund

Character: Self

Lou DiBella

Character: Self

Frank Cappuccino

Character: Self

Ron Borges

Character: Self

Jim Lampley

Character: Self