- Rob Schneider
- Gus
- David Spade
- Richie
- Jon Heder
- Clark
- Jon Lovitz
- Mel
- Craig Kilborn
- Jerry
- Molly Sims
- Liz
- Tim Meadows
- Wayne
- Nick Swardson
- Howie
- Erinn Bartlett
- Salad Girl / Sarah
- Amaury Nolasco
- Carlos
- Bill Romanowski
- Karl
- Sean Salisbury
- Brad
- Matt Weinberg
- Kyle
- John Farley
- Swimmer Boy
- Reggie Jackson
- Reggie Jackson
- Joe Gnoffo
- Marcus Ellwood
- Jackie Sandler
- Female Customer
- Ray Nicholson
- Kid Catcher #1 Game #2
- Jared Sandler
- Autograph Kid
- Terry Crews
- Poker Guy #1
- Rachel Hunter
- Hot Mother
- Patrick Schwarzenegger
- Jock Kid Game #3
- Dan Patrick
- Poker Guy #2 A.K.A. O'Malley
- Rob Frank
- Spock Lookalike
- John Kirk
- Hobbit
- Rob Moore
- Poker Guy #3
- James Earl Jones
- Darth Vader
- Max Prado
- Nelson
- Dennis Dugan
- Coach Bellows
- Jillian Henry
- Gretchen Peterson
- Garrett Julian
- Mitchell
- Alex Warrick
- Sammy Sprinkler
- Cole Hockenbury
- Jarrett
- Danny McCarthy
- Troy
- Mason Knight
- Charlie Catcher
- Charles Dugan
- Marty
- Doug Jones
- Number 7 Robot
- Jonathan Loughran
- Brad's Assistant Coach
- Michael Westphal
- Kid Umpire
- Chipps Cooney
- Old Man
- Irene Roseen
- Elderly Woman
- Judith Drake
- Mrs. Johnson
- Earl Skakel
- Outhouse Guy
- Gloria Payne
- Smitten Mother
- Michael Venit
- Kid Catcher Game #5
- Gerry Del Sol
- Umpire
- David Haddad
- Umpire
- Chillie Willie Smith
- Umpire
- Blake Clark
- Umpire
- Brooke Langton
- Kathy Dobson
- Ron Masak
- Principal
- Mary Jo Catlett
- Mrs. Ellwood
- J.J. Darwish
- Goth Kid
- Lochlyn Munro
- Ultimate Home Remodel Host
- Matthew Willig
- Jock Guy
- DJ Evans
- Little Nerdy Kid
- Alastair Douglas
- Carlos' Son
- Cleo King
- Lady Customer
- Luke Franco
- Baseball Fan #1
- David Agdaian
- First Baseman
- Bob Sexton
- Karl's Assistant Coach
- Gary Hartunian
- Dad Umpire
- Jonathan Wachter
- Brookdale Team Captain
- Gus Aukuso Puluti
- Nerd Vendor
- Kimberly Jackson
- Baseball Fan #3
- Madison McGolgan
- Benchwarmer Fan #2
- Joseph R. Sicari
- Hot Dog Vendor
- Blake Hogue
- Nerd Fan Game #4
- Rich Burris
- Umpire Game #3
- Michael Moore
- Candia Assistant Coach
- Tom Silardi
- Candia Coach
- Erick Keays
- Nerd Vendor #2
- Elle King
- Goth Kid's Girlfriend
- Abbi Butler
- Pizza Hut Employee
- Mesha Kussman
- Hot Dog Customer
- Wyking Jones
- Umpire #5
- Darryl K. Miller Sr.
- Umpire #6 Game #6
- Robert Harvey
- Umpire #7
- Gabriel Pimentel
- Little Man
- Jack Platner
- Wayne's Team, 2nd Baseman
- Joey Singleton
- Wayne's Team, Center Fielder
- Nolan Sax
- Wayne's Team, Shortstop
- Stephen Andrich
- Umpire #8
- Aleksandr Akulov
- Nerd Fan
- Jack Anthony
- Nerd 4 Life
- Joni Avery
- Snack Stand Customer
- Robert Buckingham
- Baseball Game Spectator / Pizza Hut Patron (uncredited)
- Jodi Clay
- Baseball Fan
- Kelly Cramer
- Autograph Girl
- William Daniels
- K.I.T.T.
- Bruce Dobos
- Baseball Game Spectator
- Elliot Durant III
- Baseball Coach
- Edward J. Franklin
- Nerd Fan
- Vicki Goldsmith
- Jock
- Colby Greening
- Scoreboard Kid
- Joe Guintu
- Swimming Pool Fan
- Dalon Huntington
- Nerd Fan
- Jana Karson
- Baseball Game Spectator
- John Kochian
- Video Store Customer / Passerby (uncredited)
- Mike Kohl
- Nerd Fan
- Teresa Krzywicki
- Nerd Fan
- Suzanne Lodge
- Baseball Game Spectator
- Noel Petok
- Nerd 4 Life
- David Pfeiffer
- Baseball Game Spectator / Pizza Hut Patron (uncredited)
- Kristin Quick
- Kristen
- Chris Sprister
- Nerd Fan
- Brittany M. Wildman
- Nerd Fan
- Jed Williams
- Nerd 4 Life
