“If me and John should sit,” says Bjorn Borg of his old nemesis John McEnroe, “we remember every single point in matches we played. Every point. Sometimes we say, ‘Why did you serve that? You made a passing shot there, you remember you had 40-30.’ So. But for me and John, other things are more important today. We call each other, we see each other, families see each other. We don’t really talk about tennis.”

The question you most want to ask Borg is: is it really you? Didn’t you spontaneously combust in 1981?