Jeff Daniels as Narrator (voice)

Charlie Day as Mike Veeck

Mike Veeck as Self - Mike's Son / Mike Veeck

Libby Veeck as Self / Libby Veeck

Night Train Veeck as Self

Lee Adams as Self

Dax Allen as Self

Lark Allen as Self

Dan Barreiro as Self

Ila Borders as Self - Pitcher

Bob Chicoine as Self - Comiskey Beer Vendor

John-Keith Culbreth as Self - Childhood Friend

Dave Dombrowski as Self - White Sox Front Office

Nancy Faust as Self - White Sox Organist

Sister Rosalind Gefre as Self

Kevin Harmon as Self - Rebecca's Nurse

Dave Hoekstra as Self

Annie Huidekoper as Self - VP, St Paul Saints

Lamar Johnson as Self - White Sox 1974-1981

Neal Karlen as Self - Author

Tony La Russa as Self - White Sox Manager

Dave Stevens as Self - Sports Journalist

Darryl Strawberry as Self - St Paul Saints 1996

Don Wardlow as Self - Saints Announcer (archive footage)

Harlow Faith as Child

Abby Gore as Child

Tom Billett as Sportshirt Bill

Kai Walker Ballard as Child Mike Veeck

Howard M. Lockie as Umpire

Jordan Drake as Baseball Player #1

Herbert Morales as Baseball Player #2

Michael Joseph Pierce as Bard's Room Associate

Dripp Vegas as Bard's Room Associate

Elliot Berk as Bard's Room Associate

Gary Private as Bard's Room Associate

Frank Poynton as Bard's Room Man

Stewart Skelton as Bard's Room Man

Charley Rossman as Bard's Room Man

Oscar Jordan as Bard's Room Man

Max Kassidy as Waitress

David Lowe as Andy the Clown

Kalup Allen as Baseball Player in Shorts

Marianne Haaland as Young Libby Veeck

Andrea M. Anderson as Comiskey Secretary

Joel Spence as Comiskey Employee

Randy Oppenheimer as Comiskey Employee

Eliza Hayes Maher as Tampa Secretary / Nurse

Agnes Albright as Tampa Employee

Christopher Matthew Spencer as Tampa Employee

Joel Lavalle as Mike Veeck Stand In

Alan Starzinski as Mike Veeck Body Double

Bill Veeck as Self (archive footage) (uncredited)

Rebecca Veeck as Self (archive footage) (uncredited)