Singleton, ranked by MLB.com as the top prospect in the Astros organization, issued a statement following his Jan. 9 suspension apologizing to the team while admitting he tested positive for marijuana. It was his second failed test.
"I just explained to him, I said, 'Listen, your life is at a crossroads. No one can sit here and say they've never made mistakes, but now your next move will go a long way in determining how you're going to rectify this mistake,'" Porter said.
Porter said Singleton was apologetic in person, as well. He will have to sit out the first 50 games of the season, but can participate in Spring Training.
"I wanted him to know the whole organization is behind him rectifying this mistake and moving on in his baseball career," Porter said. "I said, 'Jonathan, this is not about Jonathan Singleton, the ballplayer. This is about Jonathan Singleton, the man.' Because if we get the man right, we're going to get the baseball player. But if we don't get the man right, we're never going to get the baseball player. I explained to him, 'Now the ball is in your court, and it's time for you to do your part.'"