Corey Stoll

Self - Narrator (voice)

Bill Russell

Self

Stephen Curry

Self - 4 Time NBA Champion

Larry Bird

Self - Boston Celtics 1979-92

Kareem Abdul-Jabbar

Self - Basketball Hall of Fame

Kenny Smith

Self - 2 Time NBA Champion

Bill Bradley

Self - Basketball Hall of Fame

Shaquille O'Neal

Self - Basketball Hall of Fame

Chris Paul

Self - 12 Time NBA All-Star

Jeffrey Wright

Bill Russell (voice)

Oscar Robertson

Self - Basketball Hall of Fame

Bob Ryan

Self - Sportswriter, The Boston Globe

Magic Johnson

Self - Basketball Hall of Fame

Satch Sanders

Self - Boston Celtics 1960-73

William C. Rhoden

Self - Columnist, ESPN's Andscape

Isiah Thomas

Self - Basketball Hall of Fame

Aram Goudsouzian

Self - Bill Russell Biographer, 'King of the Court'

Lawrence O'Donnell

Self - Host 'The Last Word' MSNBC

Jeannine Russell

Self - Bill Russell's Widow

Bill McSweeny

Self - Co-Author with Bill Russell, 'Go Up for Glory'

Bob Cousy

Self - Boston Celtics 1950-63

Steve Springer

Self - Sportswriter, The Los Angeles Times

Bill Walton

Self - Basketball Hall of Fame

Tom Heinsohn

Self - Boston Celtics 1956-65 (archive footage)

Bob Pettit

Self - St. Louis Hawks 1955-65 (archive footage)

Karen Russell

Self - Bill Russell's Daughter

Nelson George

Self - Author & Filmmaker

Jalen Rose

Self - NBA 1994-2007

Earl Monroe

Self - Basketball Hall of Fame

Julius Erving

Self - Basketball Hall of Fame

Nancy Auerbach

Self - Red Auerbach's Daughter

Leigh Montville

Self - Author, 'Tall Men, Short Shorts'

Dave Zirin

Self - Sports Editor, The Nation

Wilt Chamberlain

Self - Basketball Hall of Fame (archive footage)

Elgin Baylor

Self (archive footage)

Sam Jones

Self - Boston Celtics 1957-69

Steve Smith

Self - NBA Champion

Renee Montgomery

Self - WNBA All-Star

Keith Erickson

Self - Los Angeles Lakers 1968-73

Jerry West

Self - Los Angeles Lakers 1960-74

Martin Luther King Jr.

Self (archive footage)

Harry Edwards

Self - Sports Sociologist & Activist

Red Auerbach

Self - Coach, Boston Celtics 1950-66 (archive footage)