Ace In a College Tournament

I was playing in the Pinehurst Intercollegiate at Pinehurst #6. I got to hole 7, my 16th hole, which was a par 3. It was playing 175 yards. I stepped up to the tee, and hit a 7 iron. The ball was cutting at the hole so I figured it would be inside 5 feet so I bent over and picked up my tee. One of the other kids in my group said "hey that went in." "I said seriously?" He said "yeah dude that went in." So we walked up to the green and sure enough it went in. That was my first hole-in-one, and I didn't even see it go in the hole.