Confidence is a real factor…
Yeah, I've had it happen the other way too.
I'll play an opponent who isn't very good, but they don't know what my rating is, so they play confidently and it can make the game hard for me.
After they lose a few times they start playing worse, and it's a lost easier to beat them.
Another funny psychology trick is if you're a little better than someone, and both of you know it, but they happen to be playing well and get a few games off of you...
Tell them "hey, you're playing well"
or
"You're tough today, are you trying something different?"
The first one can make some people play HORRIBLY the next game. I think it's because it breaks the tension. Complimenting them is like giving them the goal, and after reaching a goal it's hard to stay motivated.
The second one can also cause someone's play to fall apart. Sometimes people are in the zone, but when you ask them this question it makes them start thinking about their play. Once you boot them out of the zone they spend more time and make more mistakes ![]()
Best to always focus on the board and not think about anything else. As soon as your mind becomes distracted with other thoughts your play suffers and this can be the simplest things. For example, I queue a game and a much higher rated player abandons it due to rating difference I get a little frustrated and that thought persists into my next game.. I blunder and lose.. the most basic stuff can mess with concentration