In Montreal, Tim Wallach drove in three runs against Los Angeles.
Two of the RBI came on a sixth-inning homer, something he said he wasn't really trying for.
"I was looking for something I could hit well and put into play," he said. "It wasn't a bad pitch. It was out over the plate, down low where I like to hit them. I'm not worrying about hitting home runs. I'm just concerned about making good contact. I know if I do that, the home runs will come."
Bill Gullickson (5-4) allowed five hits in 6 1/3 innings and helped himself with a single and two-run double. Jeff Reardon got his ninth save with 2 2/3 innings of hitless relief.
Wallach's fly scored Andre Dawson with the Expos' first run in the fourth inning. Dawson had reached on an error by third baseman Pedro Guerrero, stolen second and moved to third on Hubie Brooks' infield hit.
Montreal scored twice more in the inning on Gullickson's two-run double into the left-field corner following Jim Wohlford's single, an infield out and an intentional walk to Mike Fitzgerald.
The Dodgers got their run in the fifth when Guerrero doubled, moved to third on a fly ball and scored on R.J. Reynolds' grounder.
"For the second day in a row we only scored one run," Los Angeles Manager Tom Lasorda said. "So it's pretty hard to win that way. And also for the second day in a row the Expos' pitcher drove in two runs and that's one more than we've scored both times."