Less than two weeks until the June 6 first-year player draft, Astros general manager Jeff Luhnow has pared down his list of candidates for the top overall pick. “We’ve narrowed it to five or six, but the thing is that when we meet again it’s possible that one of the others all of a sudden is in the conversation again,” Luhnow said. “But for me, it’s five or six. I have my list, but the others have their own list.” Luhnow and scouting director Mike Elias ultimately will decide the first pick. Oklahoma righthander Jonathan Gray, Stanford righthander Mark Appel and San Diego State first baseman Kris Bryant are considered [...]