The Seattle Sounders got an own goal early and Obafemi Martins scored in the second half to spoil the Montreal Impact's home opener with a 2-0 MLS victory before 27,207 fans at Olympic Stadium on Sunday.
The loss left Montreal (0-3-0) and new coach Frank Klopas winless after three games this season. The Sounders (2-1-0), coming off a 2-1 defeat last week to Toronto FC, dominated the opening half and could easily have been up by three goals.
Lamarr Neagle, who spent the 2012 season with Montreal before being traded back to the Sounders, headed a Gonzalo Pineda free kick out of a crowd and saw it hit the crossbar and deflect off goalkeeper Troy Perkins and into the net in the eighth minute.
Seattle nearly had another in the 17th minute, but Neagle reached back to get a hand on Martin's header. And in the 32nd minute, Neagle's long low shot went off a goalpost.
The Sounders struck again in the 58th minute, when Neagle passed across the front of the goal and Kenny Copper chipped it back for Martins to head into an open side with the Impact defence standing still in front of Perkins.
Seattle protected the lead the rest of the way and Montreal got some chances, including a Blake Smith blast in the 84th minute that defender Traore Djimi swept off the line.
The game was originally scheduled for Saturday but was postponed a day due to fears of an accumulation of snow on the domed stadium's roof, which is slated for replacement. Montreal is 4-2-3 in games played at the Big O.