New rules for tournaments for MLS teams:
MLS doubles first-team presence in U.S. Open Cup to 16 clubs
MLS announced the guidelines for their 30 teams that will take part in four North American cup competitions in 2025 and 2026, which will see an increased presence in the U.S. Open Cup.
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Full list of MLS clubs' North American cup participation for 2025:
Eastern Conference
Atlanta United FC: Leagues Cup
Charlotte FC: Leagues Cup, U.S. Open Cup
Chicago Fire FC: U.S. Open Cup
FC Cincinnati: Concacaf Champions Cup, Leagues Cup
Columbus Crew: Concacaf Champions Cup, Leagues Cup
D.C. United: U.S. Open Cup
Inter Miami CF: Concacaf Champions Cup, Leagues Cup
CF Montréal: Leagues Cup, Canadian Championship
New York City FC: Leagues Cup, U.S. Open Cup
New York Red Bulls: Leagues Cup, U.S. Open Cup
Nashville SC: U.S. Open Cup
New England Revolution: U.S. Open Cup
Orlando City SC: Leagues Cup, U.S. Open Cup
Philadelphia Union: U.S. Open Cup
Toronto FC: Canadian Championship
Western Conference
Austin FC: U.S. Open Cup
Colorado Rapids: Concacaf Champions Cup, Leagues Cup
FC Dallas: U.S. Open Cup,
Houston Dynamo FC: Leagues Cup, U.S. Open Cup
LA Galaxy: Concacaf Champions Cup, Leagues Cup
LAFC: Concacaf Champions Cup, Leagues Cup
Minnesota United FC: Leagues Cup, U.S. Open Cup
Portland Timbers: U.S. Open Cup, Leagues Cup
Real Salt Lake: Concacaf Champions Cup, Leagues Cup
San Jose Earthquakes: U.S. Open Cup San Diego FC: Leagues Cup
Seattle Sounders FC: Concacaf Champions Cup, Leagues Cup
Sporting Kansas City: Concacaf Champions Cup
St. Louis City SC: U.S. Open Cup
Vancouver Whitecaps: Concacaf Champions Cup, Canadian Championship
MLS Next Pro teams participating in the 2025 U.S. Open Cup
Carolina Core FC (Independent), Chattanooga FC (Independent), FC Cincinnati 2 (FC Cincinnati), Columbus Crew 2 (Columbus Crew), Inter Miami CF II (Inter Miami CF), LAFC2 (LAFC), Real Monarchs (Real Salt Lake), Sporting KC II (Sporting Kansas City), Tacoma Defiance (Seattle Sounders FC), Ventura County FC (LA Galaxy).