I stood on the tee at hole #14, which was a 159 yard par 3. I was playing in the men's club of Oregon City Golf Club on 4/17/15. The 14 is a par three that drops in elevation about 75 feet to narrow but deep green. The wind was about 10 mph left to right and facing us at about 10 o'clock. I used a six iron to hit a yellow Titleist NXT tour S. I teed the ball up slightly and took a smooth swing. The sound of striking the ball told me that I hit the ball square. The ball flew right of the hole and had a slight draw, which brought the ball back toward the flag stick. My eyes lost sight of the ball, which was headed at the flag stick. One of my playing partners who was walking along the ridge above the hole saw the ball land about six inches from the cup, took a hop up and landed into the cup. He let out a whoop and shouted to me that I had a hole-in-one. I made my way down to the green, repaired my ball mark and took the ball out of the cup. The ball is now in my collection with the four other balls that had previously found the cup.