Catherine Liscumb/Chris Liscumb (Ilderton, ON) won 11-6 over Kaitlin Jewer/Robert Currie (Toronto, ON) in the Final of the Palmerston Mixed Doubles Spiel, held October 30 - 31, 2021 in Palmerston, Ontario. To advance to the championship game, Liscumb/Liscumb won 11-7 over Lauren Wasylkiw/Shane Konings (Unionville, ON) in the semifinals of the 2021 Palmerston Mixed Doubles Spiel in Palmerston, Ontario; and won 8-1 over Katie Cottrill/Shawn Cottrill (Belgrave, ON) in the quarterfinals. of the 2021 Palmerston Mixed Doubles Spiel in Palmerston, Ontario;
 
Liscumb/Liscumb finished 3-0 in the 16-team qualifying round. . In their opening game, Liscumb/Liscumb defeated Olivia Beirnes/Kyle Forster (Elmira, ON) 9-4, then won 5-2 against Cynthia Furlotte/David Daoust (Sudbury, ON) and 6-3 against Clancy Grandy/Patrick Janssen (Pickering, ON) in their final qualifying round match.
 
For winning the Palmerston Mixed Doubles Spiel Championship title, Liscumb/Liscumb earned 22.822 world rankings points along with the $1,000CDN first prize cheque, remaining in 778th place overall on the World Ranking Standings with a net gain of 18.274 after improving upon their best so far this season. Liscumb/Liscumb ranks 22nd overall on the Year-to-Date rankings with 40.098 points earned so far this season.