"At this point, the plan is he'll stay with Corpus Christi for a series or two and then he'll move up to Oklahoma City after that," Luhnow said. "We want him to get increasingly comfortable and then challenge him every step of the way. He showed us he was ready for the competition, so he's taking the next step."
Singleton hit .286 (6-for-21) with an .810 slugging percentage while belting three home runs and driving in five runs through six games in Quad Cities.
Luhnow also didn't rule out Singleton's chances of ascending to the Major League level by season's end.
"Why not?" Luhnow said when asked if Singleton could play with the Astros this summer. "Maybe this will all end up with him in Houston this summer."
After the suspension, manager Bo Porter took Singleton under his wing during Spring Training and said the 21-year-old first baseman has done everything the organization has asked.
"I made this perfectly clear to Jonathan when this whole situation came about," Porter said. "I told him, 'Your baseball skill set is one thing, but you getting this here situation under control and behind you and making better decisions moving forward is more about Jonathan 'The Man' than it is about Jonathan 'The Baseball Player.'
"Because if we get Jonathan 'The Man' right, then we're going to get the 'Baseball Player,' but if we don't get Jonathan 'The Man' right, we will never get the 'Baseball Player.' To his credit, he has gotten Jonathan 'The Man' right, and I think the baseball part of it will pretty much take care of itself."
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. Chris Abshire is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.