"It's just one," Guerin said after his first power-play goal of the season. "I have to keep moving forward and not make a big deal of it."
Guerin, who went 13 games without a goal, has two in his last three games, giving him eight for the season. Guerin, whose career high is 41 goals for the Boston Bruins in 2001-02, expected a much better start and his frustration has been evident.
"Goal-scorers are guys who can get hot when they get confidence and can go on a run," Stars coach Dave Tippett said. "Not much has been going in. Hopefully this will get him going."
Dallas' penalty-killing unit also was effective, blanking St. Louis on six chances. The Stars haven't given up a power-play goal since Dec. 18, a streak of 36 kills.
Rookie Jason Bacashihua, the Stars' first-round draft pick in 2001, stopped 22 shots for Blues, last in the Western Conference with 22 points. The Stars routed the Blues 6-1 in St. Louis on Monday night and have won the last five games in the series.
Dallas, which had lost its previous two home games, opened the scoring at 10:12 of the first period on Guerin's short-range shot through Bacashihua's pads.
Johnson wasn't penalized, and Dallas' Steve Ott took exception, pummeling Johnson during the ensuing scrap. Three more fights broke out over the next 49 seconds as the Stars dominated the fisticuffs and built a 10-2 shots advantage for the period.
"I thought it was great," Ott said. "There were four good fights. It was kind of like old-style NHL. I guess we brought it back out."
Zubov capitalized on a 5-on-3 with 4:03 left in the second period, scoring on a one-timer from the top of the left circle.
Lehtinen made it 3-0 with his 20th goal 41 seconds later as the Stars cashed in on another two-man advantage.
"It was good for us," Lehtinen said. "We've been struggling on the 5-on-3s and we haven't been scoring much on the power play. Those goals were huge. Those led us to a win."
The Blues were steaming after the game over four penalty calls that went against them during a span of 2:03 in the second period. They included two unsportsmanlike conduct calls by referees Stephane Auger and Dan O'Rourke, one against 14-year veteran Doug Weight.
"There was a lot of passion in this game," Blues coach Mike Kitchen said. "I thought it was an entertaining game for the fans and the referees took it over. (Weight) didn't really say much and that led to a 5-on-3 against a very good hockey team."
Said Weight: "We were pretty upset about the calls. ... There were a bunch of weak ones in there and of course the two unsportsmanlike calls don't help."
- Stars C Stu Barnes missed the game because of a groin/hip flexor injury.
- Dallas D Martin Skoula reached 100 career points with an assist on Guerin's goal.
- Dallas was 3-3 in its previous six home games.