Jonathan Singleton, a rising star in the Astros organization and the team's first baseman of the future, has been suspended for the first 50 games of the 2013 season for his second violation of minor league baseball's drug policy.

Singleton issued an apology through his agents, Adam Karon and Matt Sosnick of Sosnick Cobbe Sports.

"I was informed today that I have tested positive for marijuana," Singleton said in the statement. "As a result, I am being suspended for the first 50 games of the 2013 season. I accept the penalty and take full responsibility for my actions. I apologize to my parents, the Houston Astros and [general manager] Jeff Luhnow.

"The Astros have been nothing but supportive of me and good to me in my short time with the organization. My hope is to use this as a learning experience and spend the rest of my career proving to myself and the baseball community that this was a lapse in judgment, and is not in any way indicative of my character or my dedication to baseball or to my team."