United States's Nathan O'Reilly won 10-7 over United States's Tyler Townsend in the Bronze Medal game at the 2023 USA Curling 5-Under National Championship in Duluth, Minnesota. of the 2023 USA Curling 5-Under National Championship in Duluth, Minnesota; United States's Nathan O'Reilly won 10-7 over United States's Tyler Townsend in the Bronze Medal game at the 2023 USA Curling 5-Under National Championship in Duluth, Minnesota. United States's Nathan O'Reilly lost 7-4 to United States's Matt Mellin in the semifinals to drop into the third place game. of the 2023 USA Curling 5-Under National Championship in Duluth, Minnesota; and won 6-5 over United States's Matthew Kenlan in the quarterfinals. of the 2023 USA Curling 5-Under National Championship in Duluth, Minnesota;
 
United States's Nathan O'Reilly finished 5-0 in the 0-team qualifying round. . In their opening game, United States's Nathan O'Reilly defeated United States's David Dickinson 6-5, then won 8-3 against United States's Benjo Delarmente and 8-7 against United States's Carl Haynes. United States's Nathan O'Reilly won 6-1 against United States's David Hejna, then won 9-6 against United States's Zach Anderson in their final qualifying round match.
 
United States's Nathan O'Reilly ranks th overall on the Year-to-Date rankings with points earned so far this season.