Mason Guentzel (St. Paul, MN) lost 10-5 to Caden Hebert (Fargo, ND) in the Final of the U21 Junior Metropolis Open - National Qualifier, held November 10 - 12, 2023 at the Eau Claire Curling Club in Eau Claire, United States. Advancing directly to the semifinals, Guentzel won 11-3 over Caiden Rose (Fargo, ND) to advance to the championship game. of the 2024 U21 Junior Metropolis Open - National Qualifier in Eau Claire, Wisconsin, United States;
 
Guentzel finished 3-0 in the 0-team qualifying round. . In their opening game, Guentzel defeated Carson Kopp (Madison, WI) 10-0, then won 9-8 against Matthew Lannoye (Portage, WI) and 10-5 against Carson McMullin (Eau Claire, WI) in their final qualifying round match.
 
Guentzel ranks th overall on the Year-to-Date rankings with points earned so far this season.