Here it is <- I played as white.
Apparently, it wasn't as much of a blunder as it felt at the table. If the strength graph is any indication it probably couldn't have been evener (that's a word, right?). I kinda looked at my opponent and we had this moment of telepathy going along the lines of "is there a reason to prolong this thing? Let's just handshake, sign the game sheet and report the draw."
That tiny moment of gained position felt huge during the game, though. That's likely why losing it felt like such a blunder.
Your score in the tournament overall still sounds like you being overly modest.
Perhaps, but so far my progress at tournaments goes in one of two ways:
1. Cruising without breaking a sweat until something breaks my streak and I get myself into a self-sustaining anxiety fission pile about my next game (which means I'm going to make mistakes and play conservatively instead of my prefered style).
2. Lose the first five or six consecutive games, until I'm down with the 'glue-eating kids' and stop giving a fuck so hard that I'm winning every game for the rest of the tournament.
My sample size is around forty and there aren't many outliers.
Plus I prefer to downplay myself most of the time. Doesn't feel as bad when things go to shit.