By Jelani Scott The Blue Devils are headed to their third Elite Eight Appearance in five seasons. With the stakes as high as they’ve been all season, Duke found a way to grind out a 78-73 win over Texas Tech in the Sweet Sixteen on Thursday night. The closing minute of the contest saw the Blue Devils come up with a number of pivotal defensive stops on their way to victory, an effort sparked by a tradition as fabled as Mike Krzyzewski himself. With his team up 73-68, the 75-year-old coach got down on one knee and slapped the floor which expectedly prompted a synchronized response from his playe…