The Penguins fell to second place, one point behind the Washington Capitals, with a 5-2 loss at the Toronto Maple Leafs and the Capitals' 2-0 win against the San Jose Sharks on Saturday. Pittsburgh is one point ahead of the third-place Philadelphia Flyers.
Goalie Casey DeSmith could start after stopping all nine shots he faced in relief of Tristan Jarry on Saturday. Jarry allowed four goals on 16 shots.
The Stars, who start a six-game road trip, will pull to within one point of the third-place Minnesota Wild in the Central Division with a victory. They hold the first wild card into the Stanley Cup Playoffs from the Western Conference, two points ahead of the Colorado Avalanche.
Dallas is 5-5-2 in its past 12 games following a five-game winning streak.