There are lots more people who could be included on a list like this (Top 100? Top 500?), but these people have captured the imaginations of sports fans for their outrageous actions both in and out of their sports profession.
A list like this has to be limited, and therefore I've excluded "actual" or "made up" villains like professional wrestlers. Also excluded are non-sports figures, so there won't be Munich terrorists at the top of the list, gamblers involved in the Black Sox scandal or racial bigots from the 19th Century who caused segregation in sports.
Also there aren't any behind-the-scenes sports villains, like those who built the fatal luge track for the Vancouver Olympics, sports owners who ran their teams into the ground or in some cases held cities for ransom for a better sports facility and even removed a franchise from a city to get a better deal elsewhere, or fraudsters like Alan Eagleson.
It also should be noted that in many of these cases, the figures here listed could be the head of various sub-categories of specific villainy, each with a long line of copy cats behind them. And so, with a dishonourable mention to people like James Harrison, Mel Blount, Glen Edwards, Brad Gassoff, Paul Higgins, John Kordic, Ile Nastase and every deliberate bean ball pitcher, I present this sports hall of shame.