The Colorado Rapids are an American professional men's soccer team based in the Denver suburb of Commerce City, Colorado. The Rapids compete in Major League Soccer as a member of the Western Conference. The franchise began play in 1996 as one of the charter clubs in MLS. Colorado won the MLS Cup in 2010, their second MLS Cup appearance. The first appearance was in 1997, losing to D.C. United. They were also runners up of the Lamar Hunt U.S. Open Cup in the 1999 tournament, where they lost to the Rochester Raging Rhinos, which was the last time a non-MLS team has won the Cup. The Rapids play their home games at Dick's Sporting Goods Park in Commerce City since its opening in the 2007 season.

Dick's Sporting Goods Park

Tacoma Defiance, formerly Seattle Sounders FC 2, is an American professional soccer team based in Tacoma, Washington, U.S. that competes in the USL Championship, the second tier of the national soccer pyramid, as the reserve team of Seattle Sounders FC. The Defiance is operated by The Baseball Club of Tacoma (operator/owner of the Tacoma Rainiers) and managed by Seattle Sounders FC, while 20 percent of the club is fan-owned through the non-profit Sounders Community Trust. The club was established in 2014 as Seattle Sounders FC 2 (S2) and originally played at Starfire Sports in Tukwila, Washington. The team moved to Tacoma's Cheney Stadium in 2018 and was rebranded as the Defiance the following season. The Defiance plans to move into a new soccer-specific stadium near Cheney Stadium in the 2020s.