The Astros wouldn’t have selected Houston native Mark Appel with No. 1 overall pick in the 2013 MLB amateur draft if the rebuilding franchise didn’t believe it could sign the Scott Boras client. Less than two weeks after making Appel the centerpiece of its new era, the Astros have officially agreed to terms with the hard-throwing righthander. A 3 p.m. Wednesday press conference at Minute Maid Park will showcase the signing. “We were very excited to be able to get Mark and he played little-league baseball here,” Astros owner Jim Crane said Wednesday, prior to the 2013 MLB Diversity Summit at the George Brown Convention Center. “His dad lives here [...]