an object lesson in humility...

I think murphy's law not only permits, but REQUIRES that, facing a player rated 300 points below you in both sides of an opening that fits your style perfectly, you'll get utterly destroyed.
Game 721077

Game 721084

Note the traditional gain of large material advantage followed by gross series of careless blunders.

Embarassing, huh? Let this be a moral lesson to you all about humility and giving full attention to every game regardless of the preceived strength of the opponent. 😳

It is indeed a dangerous thing to believe a game is won before the first move is made. Your opponent may be weaker, but if he's determined to win, he must be given respect.