Darnell Duff (Winnipeg, MB) qualified for the 2021 Duff's Challenge Spiel Series playoffs, set to play their quarterfinals match against Kelly Harris (Fredericton, NB). of the 2021 Duff's Challenge Spiel Series in Anywhere, World;
 
Duff finished 4-2 in the 0-team qualifying round. . In their opening game, Duff lost 9-7 to Canada's Connor Simms, then responded with a 7-3 win over Canada's Brice Russ. Duff won 9-5 against Jordan Steinke (Edmonton, AB), then won 7-1 against Brian Campeau (London, ON). Duff went on to lose 6-4 against Canada's Ryan Thompson Brown. Duff responded with a 6-4 win over Shane Stewart (Huntsville, AL) in their final qualifying round match.
 
Duff ranks th overall on the Year-to-Date rankings with points earned so far this season.