Placed on tees by an unseen, automated machine, the white balls pop up through small openings in the green practice mats, their dimpled surfaces a study of shadows under the stadium lighting. A chorus of whoosh-thwack echoes through Haggin Oaks’ driving range, where a handful of night owls and a security guard occupy the largely desolate facility. Long drive competitor Daniel Awe of El Dorado Hills practices his swing on July 3 at the Haggin Oaks golf complex in Sacramento.