There are no sure things in baseball. But if your minor-league club has a leadership award, and it also has an Naval Academy graduate on the roster who is four years older than everybody else on the team, and he’s got an earned-run average under 1.00, well … To no one’s surprise, the State College (Pa.) Spikes honored Reserve Lt. Mitch Harris with the Spikes Leadership Award late last month, a few weeks before wrapping up their season with a 4-3 loss to the Tri-City ValleyCats in Game 3 of the best-of-3 New York-Penn League Championship Series. Harris, a reliever…