I was playing in a senior group that gets together every Tuesday morning at Fox Prairie in Windsor, IL. My group started on hole #13. I was using a Titleist Distance. I wasn't hitting the ball well. We got to hole #15 and I changed balls to a DT Solo. We were a 120 yards from the flag. I pulled out a 9 Iron and teed it high. Flag was front left on green. I aimed left edge of green expecting to fade. My ball went straight. there are mounds on left side of green to protect it and seperate from cart path. I hit the inside of the mound and bounced onto the green. It bounced again and then rolled and disappeared. We got up to the hole and it was not on the green. My partners got to the hole faster than I did and started whooping + Hollering. I had my 1st Hole-in-One!