In my view no. I have never considered anything involving real people to really be 'fandom' unless you're dealing with a deliberate "breaking of the fourth wall" situation. I even find historical fiction to sometimes be a blurry line for me. Real people and events are more about hashing out odds and other things like that which separate them from what I would call a valid 'fandom'.

I don't know, I've never been sufficiently into any sport to have a word that would apply to real people in a similar way to fandom, but I truly feel it's a sufficiently separate issue between the fictional world and the real that a line should be drawn.