Mine was about 6 years ago playing off a 18 handicap at men's night - I was 4 under on the front 9 at the Springs at Radium with 2 eagles, 2 birds and 2 bogeys from the tips

. I finished 5 over (someone read me the scorecard so I was 9 over on the back) but I had a -13 gross and I cleaned up on prize money that night!
Now, my handicap has been at least 10 under the 18 I had back then for the last 3 years but I have yet to come under 4 on 9 holes since then.