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Lumen Field will host MLS Cup Conference Semifinals: Seattle Sounders FC vs. TBD (Date: TBD - If Necessary) on Saturday 22nd November 2025, 3:30AM in Seattle, Washington. Select your MLS Cup Conference Semifinals: Seattle Sounders FC vs. TBD (Date: TBD - If Necessary) tickets above using our secure ticket checkout. Your Lumen Field tickets will arrive before the MLS Cup Conference Semifinals: Seattle Sounders FC vs. TBD (Date: TBD - If Necessary) event on Saturday 22nd November 2025, 3:30AM.