With sensors strapped to his torso, hands, arms, and hips, Nolan Gorman had a feel this winter for what the gizmos were going to tell him about his swing. He had heard the tell-tale percentages and statistics from last season, too. But once he watched all that data uncoil from a knot of metrics into a digital model of his swing and what it could be, Gorman sensed what he had to do.