My first full round was played when I was 9 years old and my father made me count every shot on my way to a 72-72, 144 total score. Fifteen years later I invited my father to play the same course (on the same calendar day). We talked jokingly about how it would be great if I could shoot a 36-36, for 72 to exactly halve my first round. A slow start and 39 on the front killed my chances for that, but I got red hot on the back nine and came into the tough 17th par 3 into a strong wind. I hit a five iron to two feet and all of a sudden was 3 under on the back, only needing to par the easy par 5 18th to shoot 72, record my lowest 9 hole score ever, and complete a memorable day.
After a loose approach shot put me on the right fringe of the 18th green, I smoked my 30 foot putt a good 8 feet by the hole and I was so nervous standing over the next putt my hands were sweating and I had to back away twice. To this day, I can't remember ever feeling more pressure over any sporting moment in my life. Long story short, my putt curled into the corner of the cup and I felt like I had won the Masters. Looking up and seeing the pride in my father's eyes was very special and I felt like I had accomplished something for both of us.
Due to various reasons, my father and I only played a handful of golf rounds after that, and with my father recently deceased, this will always go down as a favorite sporting memory for me, now made more mysterious as it was done on a course that no longer exists in that form.