ARDMORE, Pa. — Justin Rose walked the 18th fairway and thought of Ben Hogan, and a chance to emulate one of the most famous shots in golf. That very moment Sunday made the U.S. Open's return to Merion Golf Club worth all the bother. It was about history, about putting up with extra shuttle rides and wicker baskets on top of hole pins to enjoy the charm and legacy of this compact course tucked away in a Philadelphia suburb.