Brianne Donegan/Sam Steep (Listowel, ON) qualified for the 2018 Listowel Mixed Doubles Cashspiel playoffs, dropping their quarterfinals match 9-3 against Nicole Westlund Stewart/Tyler Stewart (Kitchener-Waterloo, ON). of the 2018 Listowel Mixed Doubles Cashspiel in Listowel, Ontario, Canada;
 
Donegan/Steep finished 2-1 in the 24-team qualifying round. . In their opening game, Donegan/Steep lost 6-5 to Jessica Shipmaker/Craig Shinde (Mississauga, ON), then responded with a 9-6 win over Katie Cottrill/Shawn Cottrill (Listowel, ON). Donegan/Steep won 10-5 against Brenda Edger/Lorne Koch (Vanastra, ON) in their final qualifying round match.
 
. For week 28 of the event schedule, Donegan/Steep did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Donegan/Steep ranks th overall on the Year-to-Date rankings with points earned so far this season.