What happened: The newly opened seats are available through the club's ticket portal. Chicago Fire visits Aug. 29 for a cross-conference MLS fixture.
Why it matters: Chicago enters the weekend third in the Eastern Conference, giving the late-August matchup playoff implications. The added inventory raises the attendance ceiling for the event.
By the numbers: Chicago has 36 points through 20 matches with an 11-6-3 record and a plus-11 goal difference. Lumen Field lists 37,722 seats for MLS regular-season configurations.
What to watch: Final attendance will show how much demand the expanded configuration draws.