Paul Giamatti

as Mike Flaherty

Amy Ryan

as Jackie Flaherty

Bobby Cannavale

as Terry Delfino

Jeffrey Tambor

as Vigman

Burt Young

as Leo Poplar

Melanie Lynskey

as Cindy Timmons

Alex Shaffer

as Kyle

Margo Martindale

as Eleanor

David Thompson

as Stemler

Nina Arianda

as Shelly

Mike Diliello

as Jimmy Reed

Marcia Haufrecht

as Gina Flaherty

Sharon Wilkins

as Judge Lee

Clare Foley

as Abby

Penelope Kindred

as Stella

Sophie Kindred

as Stella

Tim Ransom

as Stuart Thatcher

Nicholas Somers

as BHS Coach

Jacqueline Brogan

as Woman Jogging

Marceline Hugot

as Woman Jogging

Edmund Ikeda

as Frank

Joseph Tiboni

as Steve Deluca / Principal

Pam Levine

as Church Soloist

Darren Goldstein

as Sheffield Coach

Dariusz M. Uczkowski

as Zachary Lowenstein

Earl Baker Jr.

as Staff Member

Nicholas Lopez

as Anthony Pizzno

Austin Ward

as Peter Molter

Emma Degerstedt

as Miss Durrance (uncredited)

Joanna Theobalds

as Gina (uncredited)

Jill DeMonstoy

as Wrestling Mom (uncredited)

Tom McArdle

as Wrestling Match Announcer (uncredited)

Cliff Moylan

as Contractor (uncredited)