Stoic, seemingly unflappable Björn Borg (Sverrir Gudnason) and volatile, temperamental brat John McEnroe (Shia LaBeouf) competed for the Wimbledon title in 1980. On paper, it was a clash of opposites. But in fact, this film argues that the two men had more in common than anyone suspected at the time. Ice-man Borg, the main focus of this film, was in fact a volcano; his obsession with detail, his superstitions, were all part of the meticulous control mechanism he constructed to prevent the eruptions of anger that so tarnished McEnroe’s early reputation.