Kevin Costner as Roy 'Tin Cup' McAvoy

Rene Russo as Dr. Molly Griswold

Don Johnson as David Simms

Cheech Marin as Romeo Posar

Linda Hart as Doreen

Dennis Burkley as Earl

Rex Linn as Dewey

Lou Myers as Clint

Richard Lineback as Curt

George Perez as Jose

Mickey Jones as Turk

Michael Milhoan as Boone

Gary McCord as Self

Craig Stadler as Self

Peter Jacobsen as Self

Jim Nantz as CBS Announcer

Ken Venturi as CBS Announcer

Ben Wright as CBS Announcer

Frank Chirkinian as CBS Coordinating Producer

Lance Barrow as CBS Director

Brian Hammons as Golf Channel Announcer #1

Mike Ritz as Golf Channel Announcer #2

Peter Kostis as Golf Channel Reporter

Jimmy Roberts as ESPN Reporter

George Michael as Host of The Sports Machine

Kris Ancira as Golden Tassel Dancer

Sharon McCreedy as Golden Tassel Waitress

Melissa Young as Beautiful Blonde

Gregory Avellone as Man Behind the Ropes

Kevin Wilson as Michelson's Caddie

Susan A. Cabral as Patient in Exit Room

Del Roy as Local Qualifier Starter

Sanford Gibbons as Local Qualifier Official

Arina Gasanova as 19th Hole Waitress

Bill Caplan as U.S. Open Starter

Sharon Costner as Grandparent with Dog

Bill Costner as Grandparent with Dog

Joe Costner as Grandchild

Rob Harris as Simms' Agent

Nick Kiriazis as Guy at Bar #1

Tom Todoroff as Guy at Bar #2

Fredrick Lewis as Guy at Bar #3

Jess King as Guy at Bar #4

Harold G. Herthum as Bartender

Mark Thomason as Roy's Stand-in

Allan Malamud as U.S. Open Reporter

Steven "Sven" Lewison as Simms' Caddie

Brad Britton as Jacobsen's Caddie

Phil Mickelson as Self/PGA Tour Golfer

Lee Janzen as Self/PGA Tour Golfer

Jerry Pate as Self/PGA Tour Golfer

Corey Pavin as Self/PGA Tour Golfer

Fred Couples as Self/PGA Tour Golfer

Billy Mayfair as Self/PGA Tour Golfer

Steve Elkington as Self/PGA Tour Golfer

John Cook as Self/PGA Tour Golfer

Andrew Magee as Self/PGA Tour Golfer

David Ogrin as Self/PGA Tour Golfer

John Mahaffey as Self/PGA Tour Golfer

Tom Purtzer as Self/PGA Tour Golfer

Jeff Maggert as Self/PGA Tour Golfer

D.A. Weibring as Self/PGA Tour Golfer

Tommy Armour III as Self/PGA Tour Golfer

Blaine McCallister as Self/PGA Tour Golfer

Bruce Lietzke as Self/PGA Tour Golfer

Gregory Buff White as Self/PGA Tour Golfer

Mike Standly as Self/PGA Tour Golfer

Jim McLean as Self/PGA Tour Golfer

Howard Twitty as Self/PGA Tour Golfer

Amy Alcott as Self/PGA Tour Golfer