United States's Sheila Mariano lost 9-4 to United States's Susan Dukes in the Bronze Medal game at the 2023 USA Curling Senior National Championships in Seattle, Washington. of the 2023 USA Curling Senior National Championships in Seattle, Washington; United States's Sheila Mariano lost 9-4 to United States's Susan Dukes in the Bronze Medal game at the 2023 USA Curling Senior National Championships in Seattle, Washington. United States's Sheila Mariano lost 8-7 to United States's Tracy Lawless in the semifinals to drop into the third place game. of the 2023 USA Curling Senior National Championships in Seattle, Washington;
 
United States's Sheila Mariano finished 3-1 in the 0-team qualifying round. . In their opening game, United States's Sheila Mariano lost 12-3 to United States's Margie Smith, then responded with a 10-4 win over United States's Margaret Lawler. United States's Sheila Mariano won 11-1 against United States's Susan Carothers, then won 8-4 against United States's Debra Aubrey in their final qualifying round match.
 
United States's Sheila Mariano ranks th overall on the Year-to-Date rankings with points earned so far this season.