A Seattle area bar league with weekly matches at various locations. Pinball teams! This is their pre-season meet up where any new rules will be discussed and people can join teams if the haven’t done so already. Followed by a casual tournament.
A lot more info (including how to join) on their website: http://www.mondaynightpinball.com/
and/or their facebook page: https://www.facebook.com/SeattleMondayNightPinball