Sverrir Gudnason character Björn Borg
Shia LaBeouf character John McEnroe
Stellan Skarsgård character Lennart Bergelin
Tuva Novotny character Mariana Simionescu
Leo Borg character Younger Björn Borg
Marcus Mossberg character Young Björn Borg
Jackson Gann character Young John McEnroe
Scott Arthur character Peter Fleming
Ian Blackman character John McEnroe Senior
Robert Emms character Vitas Gerulaitis
David Bamber character UK Commentator George Barnes
Jane Perry character Kay McEnroe
Roy McCrerey character Björn Borg's Agent #2
Björn Granath character Bengt Grive
Tom Datnow character Jimmy Connors
Colin Stinton character Talk Show Host
Janis Ahern character Psychologist
Bob Boudreaux character Mr. Henderson
Wille Glyt character National Teamplayer #2
Anders Berg character Södertälje Tennis Coach
Iva Šindelková character Borg's fan (uncredited)
