The NBA used to be a league of dynasties. Now it appears to be a league of opportunities. Consider the Heat, who won the first NBA title in their 18-year history. Or the Mavericks, who made the Finals last season for the first time in their 26-year history. Or the Clippers and Cavaliers, each ending lengthy postseason droughts and perhaps giving hope to this year's Warriors (12 non-playoff years) and Hawks (7 years).

Will your team shine or struggle this season? Check out Sports Illustrated's previews (just click on each team's name below), where you'll get the inside scoop on each team from one of our staff writers. The season starts Oct. 31. New opportunities are there for the taking. Let's tip it off.