Following King County guidelines, Seattle Sounders fans attending matches will be required to wear masks throughout the stadium starting with the next home game on Sept. 11. Starting on Oct. 3, the Sounders will also be implementing a vaccine mandate.
The Sounders announced on Tuesday that in partnership with the Seattle Seahawks and Lumen Field operator First & Goal, fans 12 years old and above will be required to show proof of vaccination status to attend matches. The Seahawks will begin enforcing the mandate on Sept. 19, their first home game of the regular season.