Alex Goligoski scored the only goal of the game for the Stars, who avoided what would have been a season-worst sixth straight loss.
Jonas Hiller gave up the one goal on 16 shots in the loss for the Ducks, who had a season-high five-game winning streak stopped.
Both teams head into the All-Star break on the outside of the Western Conference playoff chase as the Stars are 25-21-2 and the Ducks are 18-23-7.
The only goal in the game came with 3:19 to play in the first period. Loui Eriksson came into the Anaheim end through the left side and left a drop pass at the point for Mike Ribeiro, who circled around the left circle and backhanded a pass back to the point. From there, Goligoski blasted a one-timer on net that tipped off of Anaheim defenseman Cam Fowler and went into the net.
Lehtonen made 10 stops in the first, nine in the second and eight in the third for the shutout.
Lehtonen, the second overall pick of the 2002 draft, has 18 shutouts in his career...These teams will meet in Anaheim next Wednesday. The Ducks, though, will play in Phoenix the night before...Dallas has won three of four from the Ducks this season.