If I'm playing, I have no superstitions because I have a hand in the outcome. However, if I'm just a spectator/fan, I'm very superstitious. On a Celtics gameday, some article of clothing has to be green, and when I watch the game, I'm wearing a Celtics shirt. For game 7 against Miami, I was taking no chances, and wore my Bird jersey.
I thought I remember seeing multiple NBA Finals threads between the Celtics and Warriors on this site, before game 6 against Miami. Not only would I have never started those threads or responded in them, I had a hard time even clicking on those threads to read them.