Tim Raines singled in two runs in a five-run fifth inning and Charlie Lea and Jeff Reardon held the Dodgers to six hits as Montreal won, 7-2, in Los Angeles.
Mike Marshall, the Dodgers' highly regarded second-year outfielder, was hit in the head by a pitch from Reardon with two out in the ninth inning, but the batting helmet ear flap apparently absorbed most of the impact.
Marshall, 23, the 1981 minor league player of the year, was taken to Centinela Hospital after the incident. X-rays showed no fracture, but Marshall was to remain in the hospital overnight for observation.
"It's too bad it happened to such a bright young prospect," Montreal catcher Gary Carter said, "but he's aggressive and he leaned into the pitch. It just slipped out of Jeff's hand. When I leaned over him and asked him how he was, he said, 'I'm hurting.' "
Lea (1-0) retired the first 17 Dodgers before pinch-hitter Ron Roenicke doubled with two outs in the sixth. Lea, who threw a no-hitter two years ago against San Francisco, lost his shutout when Dusty Baker homered in the seventh.
Marshall was the third batter hit by a pitch in the game. Earlier, Dodger pitchers hit Montreal's Andre Dawson and Raines. But Los Angeles Manager Tom Lasorda said he did not think Marshall's beaning was a retaliation.
Lea pitched 6 2/3 innings and gave up five hits, including a run-scoring single by Bill Russell in the seventh.
Bob Welch (0-1) allowed only one hit during the first four innings before encountering trouble in the fifth. Tim Wallach singled with one out, Warren Cromartie walked and Doug Flynn singled to score Wallach.
Lea then sacrificed and was safe on a throwing error by third baseman Pedro Guerrero that loaded the bases. Raines followed with his two-run single.
One out later, Welch threw a wild pitch that allowed two runs to score.