Lalas would later return to the United States in 1996 to take part in the newly formed Major League Soccer, as a member of New England Revolution. Lalas also played with Club Sport Emelec of Ecuador, and the MLS squads MetroStars and Kansas City Wizards, but his most successful period was with Los Angeles Galaxy, with whom he won the CONCACAF Champions' Cup, Lamar Hunt U.S. Open Cup and MLS Cup before retiring in 2002. Lalas' playing style was characterized by physical ability and endurance.