Chris Paul, Jrue Holiday, Jimmy Butler and Ben Simmons are four top-of-the-head examples of topnotch defenders who aren't at all long, especially by NBA standards, relative to their height. And, as I said already, the league's elite ALSO combine footwork, quickness, physical strength, anticipation, toughness, BBIQ ... length alone doesn't come close to explaining their defensive prowess. And in at least a few cases, length explains nothing of their success relative to their peers. In that respect, Mitchell won't be breaking any new ground.