The golf world witnessed a show of grace and sportsmanship amid crushing disappointment this past weekend at the storied Masters Tournament in Augusta, Ga. Just when he seemed to have back-to-back wins locked down, reigning champion Jordan Spieth, 22, watched his lead slip away in the second half of the final round. In keeping with Masters’ tradition, Spieth had to congratulate the 2016 winner, Danny Willet, and help him on with the customary green jacket just moments after the loss. Though…