The Canadian team has the worst record in Major League Soccer, and will regret not turning a rare good performance into points.
Despite Maxim Tissot's late effot to attempt a comeback, 12th and 63rd minute goals from Sebastien Le Toux - each largely the product of the Frenchman's tenacity on offense - were enough to give the home side a fifth straight undefeated game and send the Quebecois team to its seventh consecutive loss, and Impact coach Frank Klopas seemed unable to explain the inability to translate dominant play into points.
"I wonder why we lost the game today," said Klopas afterward. "It seems like we can't get a little break. We made two mistakes that cost us the game. In certain moments, we could have done better in the final third with our final pass that was a little bit off, but we controlled the game and got opportunities.
"We still have many games to play and we still have to be better in certain areas of our game."
Midfielder Justin Mapp, one of two former Philly players to start for Montreal, said the result was a tough one to take.
"It was one of our best games this year and I think we were the better team," he said. "It's frustrating because we walk away with no points. I'm proud of the guys' effort tonight."
The Impact now have a 3-14-5 record so far this season, the worst in Major League Soccer. Their last MLS win came on June 29, and they have lost evey game since then.