Mike Judd tried to keep a level head after posting his first win in the majors.
"It was only one game," Judd said. "I've had good outings and the next time, bad. Now I've got to worry about the next outing, just try to do the same thing I did this time."
Judd, 8-7 with a 6.67 ERA in 21 starts for Triple-A Albuquerque, struck out three and walked two. This was his first career decision in the majors.
"I liked the way he was working," Dodgers manager Davey Johnson said. "I liked the way he spotted and he had good command. He read the hitters pretty good. He seems like a smart kid and he made some adjustments."
Sheffield, who went 2-for-4 with a walk, hit a two-run shot off Dustin Hermanson (5-11) in the seventh. Sheffield scored three runs and was thrown out at the plate trying to score another as the Dodgers won for the fifth time in six games.
Guerrero, who went 2-for-4, singled leading off the second to extend his career-high hitting streak to 16 games.
Raul Mondesi, benched for the previous two games, was 1-for-5, a day after asking for a trade during a profanity-filled tirade criticizing Johnson and gneral manager Kevin Malone.
Mondesi did not comment after the game. But in a press release issued by the Dodgers following the game, Mondesi apologized to Malone, Johnson, his teammates and Dodgers fans for his remarks Wednesday.
With two outs in the first, Sheffield reached safely on shortstop Geoff Blum's two-base error and scored on a single by Eric Karros, his 15th RBI in five games.
After Guerrero's 26th homer in the fourth tied it, the Dodgers took advantage of some sloppy defense to take a 4-1 lead in the sixth.
Sheffield drew a one-out walk and stole second. Karros walked, Sheffield stole third and scored the go-ahead run as catcher Michael Barrett dropped the throw home on Mondesi's grounder to third.
Hermanson, who had won his previous two starts after a 14-game winless streak, allowed six runs three earned and five hits in 6 1-3 innings.
"It was a pretty ugly game," Hermanson said. "It's kind of hard when you give a team extra outs and you have to pitch to extra people but there's a couple of times I think I could have done a better job."
Montreal closed to 6-4 in the seventh on Andrews' ninth homer, which chased Judd.
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