A story re last year's Masters: I was with a friend on no 13 when the final group came through. Frankly, Mattiace looked to me like he was playing the best. We followed Weir through the 15th. When he birdied 15, we put our chairs on the rope next to the 10 green, in hopes of a playoff. We watched him play 17, couldn't get close to 18, and went to our chairs to hope for a playoff (there were already a few hundred people there).
I was very surprised to see a young Augusta employee double rolling the no. 10 green with one of those old fashioned hand rollers. Hootie and the Augusta member in charge of course preparation (I've forgotten his name but saw him on tv that week talking about the course set up, rain, etc) showed up and watched the final rolling. It was finished just as Weir and Mattiace walked down the fairway.
Mattiace, of course, missed the green, but hit a pretty good chip. I was sitting close, and can tell you all he hit a darn good putt, but it took off on him because of the rolling of the green. He was in shock. Weir had been "gimping" many of his putts and did the same, and it still rolled past the hole.
I found out later that Mattiace had been preparing for the playoff on the practice green, which had not been rolled. I wonder to this day if anyone has told him of the special preparations of the no. 10 green. By the way, after Mattiace hit his putt off the green, I looked at Hootie and the other guy, who were laughing to themselves. Sort of an inside joke, I guess.