Coaches & Managers


Please read the information below carefully and be sure to complete both steps. Per USYSA guidelines, each coach and team volunteer must pass the national background check BEFORE participating with the players at any team function (team meeting, practices, etc.) Background checks are valid for one year from the application date, and must be renewed for each coach and volunteer before being assigned to the team’s roster. Please use your legal first and last name when completing registration.


Open the Registration tab at the link below & please choose ‘coach/admin’ registration. You will either log in with your existing Affinity username and password, or create a new account (for new employees or families new to Seattle United ONLY). This registration includes the national background check as required by WSYSA (either as a new applicant or a renewal).

Go To Affinity Sports


Step #2
Please e-mail the club registrar, Paige Blomsø as soon as you have completed registration, and include your team name in the e-mail so that she can add you to your team’s roster as soon as possible.