Timeline of Major League Soccer milestones
MLS founded with 10 teams
Expansion to 12 teams with Chicago Fire and Miami Fusion
First contraction - Miami Fusion and Tampa Bay Mutiny fold
Expansion to 12 teams with Chivas USA and Real Salt Lake
Toronto FC joins as first Canadian team
Expansion to 18 teams with Philadelphia Union and Vancouver Whitecaps
Expansion to 20 teams with NYCFC and Orlando City
Atlanta United breaks attendance records
Expansion to 23 teams with LAFC and Cincinnati
Inter Miami and Nashville SC announced
Season shortened due to COVID-19
Expansion to 28 teams with Charlotte FC and St. Louis City
Lionel Messi joins Inter Miami
San Diego FC joins as 29th team
