Daniel Casper (Chaska, MN) run at the 2021 Curve US Open of Curling Contender came to an end in the semifinals with a 8-3 loss to Scott Dunnam (Philadelphia, PA). of the 2021 Curve US Open of Curling Contender in Blaine, Minnesota, United States;
 
Casper finished 4-1 in the 8-team qualifying round. . In their opening game, Casper lost 6-5 to Rich Ruohonen (Minneapolis, MN), then responded with a 8-6 win over Luc Violette (Chaska, MN). Casper won 7-4 against Brandon Corbett (Rochester, NY), then won 9-1 against Dunnam and 5-4 against Greg Persinger (Fairbanks, AK) in their final qualifying round match.
 
Casper ranks 558th overall on the Year-to-Date rankings with 0.000 points earned so far this season.