MONTREAL (AP) -- Argentina midfielder Diego Valeri broke a deadlock in the 82nd minute as the Portland Timbers held off Montreal 3-2 on Sunday to extend the Impact's losing streak to five games in Major League Soccer.
Maximiliano Urruti and Will Johnson also scored for Portland, while Andres Romero and Maxim Tissot found the net for Montreal.
Montreal assistant coach Mauro Biello directed the Impact after coach Frank Klopas was suspended for arguing with the referee following team's loss to Real Salt Lake on Thursday.
In Sunday's other match, Pedro Morales scored from a penalty in the 53rd minute to help the Vancouver Whitecaps draw 2-2 with Dallas.
Darren Mattocks opened the scoring for Vancouver in the 11th minute with his fifth goal of the season and third in three games.
Blas Perez equalized for Dallas in the 29th minute and Brazilian midfielder Michel converted a penalty kick in the 39th.