U.S. World Cup midfielder Weston McKennie, 27, plays for Juventus in Italy but calls Dallas home. As a boy, Weston McKennie had a habit of kicking a ball — any ball, but for the purposes of this story, let’s say a tennis ball — down the aisle of a Walmart while his mom shopped. He was a rambunctious child, the word “hyper” often gets slung around, one more American boy with boundless energy and no place to put it. The balls kept him occupied; his parents rarely left home without one.