I'm going with an original pick here.
WG Grace. The man is by far and away the greatest cricketer of all time, cricket is the greatest sport of all time. Add the two up and you get the greatest sportsman of all time.
Edit: Also, the entire hard and soft drug definition is arbitrary but I wouldn't consider alcohol to be on it. Yes alcohol is a harmful drug when abused, however comparing it to cocaine is stupid as cocaine is both more harmful and more addictive. There is also the fact that alcohol consumed in reasonable quantities can have high health benefits with very little negative effects (it doesn't start damaging your liver at all until you're hitting 30 units a week, though increased cancer risk is proportional to consumption).
The problem with alcohol is that because it is pretty much the only legal drug its the one that people often start to abuse, and once you become an alcoholic it just completely screws you over.
