Over the past six seasons, the one-and-done rule has been exercised by plenty of underclassmen.
Some have come with positive results, using a productive freshman season to vault into NBA superstar status, while others saw their careers peak as a 19-year-old student, quickly flaming out after a premature jump to a league they weren't ready for.
Here's the five biggest success stories and cautionary tales from the past six drafts:
Kyrie Irving (2011 Draft — 1st overall out of Duke) — Rookie of the Year in his first season. All-Star by his second. Already considered one of the league's best point guards. Turns 21 this month.
John Wall (2010 Draft — 1st overall out of Kentucky) — Second behind Blake Griffin in Rookie of the Year voting. Inconsistent and injury-prone early in his career, but lightning quick and dynamic when on the court. Career averages of 16.0 points and 8.1 assists. Widely considered a future All-Star.
Eric Bledsoe (2010 Draft — 18th overall out of Kentucky) — Backed up John Wall at Kentucky. Backs up Chris Paul now. But widely considered a future starter and potential star. Averages 9.4 points and 3.4 assists in only 21 minutes per game.
Derrick Rose (2008 Draft — 1st overall out of Memphis) — Immediately turned around the Chicago Bulls franchise. Rookie of the Year. Won MVP his third season. Career averages of 21 points and 6.8 assists.
Kevin Durant (2007 Draft — 2nd overall out of Texas) — Three-time scoring champ. Four-time All-Star. Averaging 28.6 points, 7.7 rebounds and 4.6 assists this year. Twenty-four years old. Decent player.
Josh Selby (2011 Draft — 33rd overall out of Kansas) — Dropped in the draft and went straight to the D-League. Averaged 2.2 points in 38 career NBA games (zero starts). Would be a junior at Kansas right now.
Daniel Orton (2010 Draft — 29th overall out of Kentucky) — Only averaged 13.2 minutes in college. Has seen less time in the pros. Spent most of his first three years in the D-League. Currently on the end of the Thunder bench.
Xavier Henry (2010 Draft — 12th overall out of Kansas) — Started 16 games as a rookie, but struggled with the adjustment. Was traded from Memphis to New Orleans after the 2011 season. Has received sporadic playing time the past two years. Career averages of 4.4 points in 14.3 minutes per game.
Donte Greene (2008 Draft — 28th overall out of Syracuse) — Averaged 6.1 points and 16.8 minutes in his first four seasons in Sacramento. Currently out of the league, looking for a team. Twenty-five years old.
Brandan Wright (2007 Draft — 8th overall out of North Carolina) — Key member of the 2007 ACC champions. Came into the league with high expectations, failed to meet them. Already on his third NBA team (Warriors, Nets, Mavericks). Career averages of 6.0 points, 3.2 rebounds and 13.9 minutes.