Timing is very important when it comes to the NBA draft. Players need to know when their stock is at its absolute peak; when it has gone as high as it can and staying in school could only hurt.
We see players get hurt by bad draft decisions every year. Just look at Jared Sullinger, last year he could have been the No. 1 overall pick, now he's going to miss the lottery.
This is even more important for upperclassmen because in today's NBA, most guys who stay for three or four years do it because they don't have the upside to be NBA stars. If they have a chance to go high in the draft they need to take it.
Here are five upperclassmen who missed their chance.