When I take a note on a player in the notes tab next to the chat it does not persist. If I player the same player again the note is gone.
The note is specific to the game not opponent
If you want to make notes on the player, go to the Notes menu on their profile page.
Player notes is done from their profile pages. These can be read by friends you follow (and appear on everyone's timeline for those you follow).
They persist, but only if you visit the same game.
OK, Thank you.