No. 14: Miami Heat

14. MIAMI HEAT: 48.95 POINTS PER SEASON (1988-2009)

Through two decades of Miami basketball history, few fan bases have seen more highs and lows than this one. Miami has either won or lost at least 50 games 13 times in its 21 years (prorating for the 1998-99 lockout), with the lows including two campaigns in which the Heat went 15-67.