It might be Jack Bauer's favorite number. It's certainly way too high a total when playing blackjack. It's the number of seconds an NBA team has to shoot before the shot clock expires. It's the jersey number of Sam Jones, among other greats in basketball history.
It's also important for this article, because it's the oldest possible age with which a player can qualify for the rankings.
These are the young studs that make the Association go. They're the ones who force you to scratch your head and wonder how a player can possibly be so good at such a young age.
And—perhaps more importantly—it's an absolutely stacked group of players. The NBA is entering into a new age (cue Imagine Dragons if that's your jam), and these guys will be at the forefront of the landscape for a long, long time.
Keep in mind that players are ranked based on their current level going into 2013-14, though. Potential isn't accounted for, or else the order would look significantly different.