Major sports are major parts of society. It's not anomalous to have people who love sports come from other parts of that society.
“I wasn't aware of my dad being an actor when I was young. I remember there was an Australian children's entertainer on television called Ralph Harris and when I'd say my father was an actor, kids would say, you know, 'oh, is he Ralph Harris?' And I had to say no and then they would lose interest.”