ST. LOUIS (AP) _ Rookie Jon Sim scored his first two goals as the Dallas Stars chased the NHL's top goalie and ended the St. Louis Blues' five-game home winning streak with a 5-2 victory Tuesday night.

Jamie McLennan, the backup to Roman Turek, entered the game 4-0 with a league-leading 1.58 goals-against average. McLennan gave up the game's first four goals on 12 shots and his goals-against had risen to 2.26 when Turek replaced him at 7:12 of the second period.

The Stanley Cup champions, hindered by injuries in the early season, moved above .500 at 8-7-1 despite being outshot 37-16 and getting off only two shots in the third period. The Blues are 7-0 against Canadian teams.

Turek, who hadn't played in six days since allowing three goals on 12 shots in 35 minutes at Colorado, made only four saves the rest of the way.

Sim, called up Nov. 4 from Michigan of the AHL, entered the game with no points in two games this season and one career point _ a goal _ in nine contests. He scored on the Stars' second shot on a backhander between McLennan's legs at 1:37, and knocked in a rebound shot on the power play to make it 3-0 at 1:41 of the second period.

Darryl Sydor, Chris Murray and Brett Hull also scored and Joe Nieuwendyk had two assists for the Stars. Hull, who scored in the third period, has five goals in seven games and a team-leading seven overall.

This was the first meeting between the teams since the Stars eliminated the Blues in six games in the Western Conference semifinals last spring.

Dallas goalie Ed Belfour had an easier time in the nets despite facing so many shots. Jochen Hecht scored his third goal on a backhander in the second period and Derek King got his first on a slap shot early in the third for the Blues.