NEWTOWN SQUARE, Pa. (AP) — Aaron Rai stood straight with his arms behind his back, perfect posture, as he waited to be introduced as the latest — and among the most remarkable — winner of the PGA Championship . Next to him on a small table was the Wanamaker Trophy, big and silver and shiny. Rai couldn’t resist a quick glance at the 27-pound trophy and all those names. Jim Barnes won the first two PGA Championships in 1916 and 1919, and there had never been another winner from England until Rai