Which commissioner of a major sports league has to deal with the worst problems?
Seems like every league, except the NHL (which is falling into irrelevance) has a major scandal and bad press recently.
NFL -- off-field conduct (Pacman, Tank, Vick, etc.)
NBA -- officiating, new basketball, age limit, tanking (I pay most attention to this league, so obviously I can think of more issues here)
MLB -- steroids (baseball doesn't have as many scandals, but its one scandal is much greater than most of the NBA's)
Who's shoes would you not want to fill?