There was also an episode a few years back during the height of the steroid probe in baseball, where Cartman "cheats" to get into the Special Olympics and loses every event.
Also in that episode the one of the disabled characters uses steroids to win events. Presenting the gold medals at the games....Jason Giambi, Barry Bonds and Mark McGwire! SP goes after everyone! In that episode you could see what was coming with the MLB guys, but this thing with BB came out of "left field." Or the backfield if the baseball haters prefer...