Gainesville resident Ernie Williams was there when Sam Snead, who had just been in a car wreck, came to an Augusta hospital emergency room soon after the Masters. He said he came to know another Masters winner, Ben Hogan, when the golfer was treated by Williams’ medical school teacher at Tulane. In 88 years, Williams, a native of North Carolina who now lives in Gainesville, has done and seen a lot — on and off the golf course.