Unity Christian relied on a quick opening and a strong closing to put an exclamation point on the Iowa High School Athletic Association Boys State Basketball Tournament Friday night from Casey’s Center in Des Moines, Iowa.After leading 19-8 to begin the game, Unity Christian survived a run by Kuemper Catholic, holding them off in a battle of Knights vs. Knights, 67-64.Three players reached double figures for Unity Christian, led by 25 from Tyce VanDonge. The junior also had seven rebounds and four assists, as Brayden Harskamp scored 13 points and Keagen Winterfeld chipped in 12.Harskamp made three 3-pointers and VanDonge was 7 of 9 at the free throw line.Unity Christian Took Out Two-Time Defending Champs, No.…