Borg/McEnroe

Sverrir Gudnason

Björn Borg

Shia LaBeouf

John McEnroe

Stellan Skarsgård

Lennart Bergelin

Tuva Novotny

Mariana Simionescu

Leo Borg

Younger Björn Borg

Marcus Mossberg

Young Björn Borg

Jackson Gann

Young John McEnroe

Scott Arthur

Peter Fleming

Ian Blackman

John McEnroe Senior

Robert Emms

Vitas Gerulaitis

David Bamber

UK Commentator George Barnes

Jane Perry

Kay McEnroe

Roy McCrerey

Björn Borg's Agent #2

Björn Granath

Bengt Grive

Tom Datnow

Jimmy Connors

Colin Stinton

Talk Show Host

Janis Ahern

Psychologist

Bob Boudreaux

Mr. Henderson

Wille Glyt

National Teamplayer #2

Anders Berg

Södertälje Tennis Coach

Iva Šindelková

Borg's fan (non-crédité)