The Red Sox are not only soaring at the major league level, but Theo Epstein’s farm system is ripening with what could potentially be the best crop of prospects we’ve seen in a long time, including two pitchers set to take the mound at Fenway over the next few days. We spotlight some of the rising stars at each level of the minor leagues. (Text by Amalie Benjamin, Globe Staff, and David Lefort and Steve Silva, Boston.com)