With his father, Nolan Ryan, looking on from the second row of seats at Minute Maid Park’s news conference room, Reid Ryan was introduced today as the new president of business operations of the Astros. Reid Ryan, the CEO of Ryan Sanders Baseball, which operates minor league clubs in Round Rock and Corpus Christi, becomes the second generation of the Ryan family in Astros colors and the second generation of the family in baseball management. Nolan Ryan remains as the CEO of the Rangers. He replaces George Postolos, who resigned Monday as the Astros’ president and CEO, and assumes the helm of an organization struggling to get wins on the field, fans in the stands and subscribers for Comcast SportsNet Houston, the regional sports network owned by the Astros, Rockets and NBC Sports Group.