Defender Stefano Pesoli and Tony Donatelli scored Wednesday to give the Montreal Impact a 2-0 win over Joe Public of Trinidad & Tobago, which had beaten MLS's New England Revolution twice.
The result left the two USL-1 entrants -- Montreal and Puerto Rico -- with a 4-0-2 record in the new Concacaf competition, while MLS teams are 0-4-1.
Former MLS goalkeeper Matt Jordan was outstanding for Montreal, making seven saves, notably a stop on Guyanan star Gregory Richardson's header in the 25th minute, to earn his third shutout in three games.
Other results: Marathon (Honduras) beat Mexico's Cruz Azul, 2-0, while Santos of Mexico edged Guatemala's Municipal, 3-2.
Sept. 17 in Montreal
Montreal Impact 2 Joe Public 0. Goals: Pesoli 14, Donatelli 47.
Joe Public -- Figueroa, Harvey, Mitchell, Springer, Thomas, Dwarika, Baptiste, Richardson, Wolfe (Calderon, 60), Nelson (Thornhill, 72), Saunders (Andrews, 80).
Montreal -- Jordan, Braz, Gatti, Pesoli, Pizzolitto, Brillant (Placentino, 79), Di Lorenzo, Donatelli (Biello, 62), Grande, Byers, Gjertsen (Joqueviel, 74).
Referee: Jair Marrufo (USA).