What is the MLS attendance record for a single match?

The record of 73,019 was set on December 8, 2018, when Atlanta United hosted Portland Timbers in the MLS Cup Final at Mercedes-Benz Stadium. Atlanta won 2-0.

Atlanta United has consistently set attendance records since joining MLS in 2017, regularly filling their 42,500-seat soccer configuration and occasionally opening the upper deck for 70,000+ fans.