Well tbh if you had a coach, he and your teammates would know from the first training drill if you had never played football (soccer). If for some reason you had never trained, and went straight into a game you would be found out when the coach tells you your position and you dont go there.
Taylor what you were saying about football before, that could be said about a very talented and great player in the NFL as well. Hell, you could put Jerry Rice in the huddle and he wouldn't know the calls or know what he was doing.
"Kobe first injured this shoulder in the preseason, according to sources. Has been playing w/ it all year. It just got worse last night"
After suffering the injury, he simply started shooting with his left hand rather than leaving the game.