Sioux City now has 45 points on the season.
Jake Guentzel extended his scoring streak to 11 games with a goal in the second period, and Trevor Olson provided the game winner in a shootout as Sioux City topped Dubuque for the second time in a week, 2-1 Friday night.
Goalie Kyle Hayton made 20 of 21 saves as the Muskies improved to 11-11-4 at the Tyson Events Center this year.