After a tumultuous sophomore season, Oklahoma State star Marcus Smart has decided to enter the NBA draft.

Smart spurned the NBA after his freshman year to return to a Cowboys team that was expected to be among the nation's best, but injuries and controversy marred Smart's return.

Big man Michael Cobbins suffered a season-ending injury in late December. In early February, Stevie Clark was dismissed by coach Travis Ford following an arrest. Smart shoved a Texas Tech fan shortly after that and earned a three-game suspension and national scrutiny. Plus, the team endured a seven-game losing streak.

But despite that, Smart told the Oklahoman he didn't regret returning to Stillwater.

"I had a great season here at Oklahoma State," Smart told the newspaper. "It's weird, because I didn't go to the NBA Draft last year, I chose to come back -- which I do not regret at all. A lot of people say I made the wrong decision. But who are they to tell me what I should have done? It's me, not them.