ST. LOUIS (AP) - Slumping Dallas goalie Kari Lehtonen took advantage of a timely visit to St. Louis.

Lehtonen stopped 28 shots and Brad Richards scored the go-ahead goal at 6:32 of the third period to lead the Stars to a 4-2 victory over the St. Louis Blues on Sunday.

Lehtonen broke a four-game losing streak, and improved to 6-1 lifetime against St. Louis. Lehtonen has never allowed more than two goals in all seven career starts against the Blues.

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``I don't know if there's any secret to it,' he said. ``I just try to come in here and play well. It certainly wasn't easy.'

Lehtonen, who improved to 16-10-4, stopped the final 19 shots. He had given up 10 goals in his previous two games.

``It was a great bounce-back game for him,' Dallas coach Marc Crawford said. ``They had a couple really good chances in the third period and he stood his ground. He's a calming influence when he plays like that.'

Lehtonen helped the Stars to their fifth successive road victory. They are 0-3-1 in their last four home games.

``It would be nice to be good at both places,' Lehtonen said.

Richards had two assists and Brenden Morrow scored twice to help Dallas finish 4-0 against St. Louis this season. Dallas outscored St. Louis 7-0 in the third period during the four contests and won the first three meetings by one goal.

``A win is a win, they are all important,' Morrow said. ``But the way we're doing it gives us a lot of confidence.'

James Neal added a goal with 2:50 left.

St. Louis, which carried a 2-1 lead into the third period, had a five-game winning streak snapped. Alex Steen and David Backes scored for the Blues. Steen has a team-high 13 goals, nine in the last 16 games.

The Blues were 12-2-1 when leading after two periods.

``They started making us pay in the third period,' Backes said. ``We needed a little more push, a little more effort.'

Morrow began the comeback with his second goal of night 2:28 into the third period. Richards added his team-high 18th goal and his third game-winning tally of the season.

``It was a real good finish,' Richards said. ``Huge. You have to take the two points when you can get them.'

The Blues, who had won their last four home games, fell to a 14-5-2 at home.

``We had an opportunity to steal a game we probably didn't deserve,' said St. Louis defenseman Barret Jackman. ``We just weren't able to do it.'

NOTES: Dallas last won five straight road games Jan. 17-Feb. 7, 2008. ... The contest featured a 1:15 brawl between St. Louis' Cam Janssen and Dallas' Krystofer Barch in the opening period. ``I've got no feelings for him, we're always trying to kill each other,' Barch said... The Blues have 37 fighting majors this season - third in the NHL. ... The Blues have sold out all 21 of their home games. ... The Blues had a seven-game winning streak earlier in the season from Oct. 22 to Nov. 7.