It was literally the first swing I have taken with the new irons that I just bought from a friend of mine. Funny enough he was also playing with me at the time it happened. The pin was back left and tucked pretty hard against a bunker and water all down the left side. I hit a baby fade with my 8 iron to about 5 feet and it just disappeared. We sat on the tee box joking that it rolled off the green but as we got to the green, we didn't see a ball on the back side and sure enough it was in the hole.