 Leader Billy Horschel, four under, six others one back, including Daniel Brown, leading much of today before a bogey and a double bogey on his last two holes. Sewu Kim with a hole-in-one on the par 3 17th today at 238 yards, the longest ace in Open history. My caddie told me, you better hit hard with the three iron, so I did, and as soon as I contact good, I see the ball over the fringe, so...