All time greatest Sportsman

I know the question is too subjective but we surely can go with the majority vote.
Sports Illustrated is having a poll online for their 50th annivessary.Their choice of athletes however are mainly towards American athletes and sports.The choices are limited to previous sportsman of the year recipient for the last 50 years only.Personally i would go for Michael Jordan while Muhammad Ali a strong second.Lance Armstrong would be my third choice.U can go check the poll here SI.com