Even the most die-hard Seattle Sounders fans don't know everything about their beloved club. Whether you were around for the USL days or were drawn in more recently by the team's incredible 2016 comeback, these are the 100 things all fans need to know. Award-winning sportswriter Geoff Baker has collected every essential piece of Sounders knowledge and trivia, as well as must-do activities, and ranks them all from 1 to 100, providing an entertaining and easy-to-follow checklist as you progress on your way to fan superstardom.