KANSAS CITY, Mo. — They endured it together, Billy Butler and Alex Gordon. All those years with 90 losses, the managerial changes and youth movements and empty seats come late September.Empty seats in July and August, too.They were supposed to be the two players who led the Kansas City Royals back to the playoffs. Butler was the standout high school prospect who couldn’t run well and struggled with his glove, but my, how he could hit.