upper classman there are in that draft that BENEFITTED and raised their stock by staying an extra year (like most on here wanted mika to do). there are always a couple every year. the VAST MAJORITY of NBA draft picks leave early...whether they are #1 or #40 they leave early to take their shot at the league.
this is actually a big issue in NBA/NCAA right now talked about a lot...how almost no one is sticking around in college and all making the leap to the NBA.