Live streaming: FoxSportsGo.com or download the FOX Sports Go App.
Watch parties: There's plenty around the city but here's a link to a list of official gatherings.
RELATED: How to cheer like an Atlanta United fan
Atlanta United will wear its red and black kits, known as the 5 Stripes. Atlanta United is 9-2-5 this season, including 8-1-4 in this primary kit at home this season.
Atlanta United is a prohibitive favorite -- fivethirtyeight.com calculates it at a 77 percent probability -- to defeat Portland and win the MLS Cup.
Atlanta United and Portland have faced each other twice in the past two years. They drew 1-1 at Providence Park in the 2017 season. They drew 1-1 at Mercedes-Benz Stadium this season.
Atlanta United finished with 69 points this season, tied for second-most in league history. They were the second seed in the East. The Timbers finished with 54 points. They were the fifth seed in the West.
Atlanta United missed out on hardware last year when it was knocked out of the U.S. Open Cup, the race for the Supporters’ Shield, and then the playoffs in an excruciating shootout loss to Columbus.