Karen Rosser (Dugald, MB) won 3-1 over Linda Stewart (Winnipeg, MB) in the Final of the Thifty Car Wash Curling Club, held December 1 - 4, 2011 in Beausejour, Manitoba. To advance to the championship game, Rosser won 6-4 over Shannon Birchard (Winnipeg, MB) in the semifinals of the 2011 Thifty Car Wash Curling Club in Beausejour, Manitoba;
 
Rosser finished 3-1 in the 16-team qualifying round. . In their opening game, Rosser defeated Betty Buurma (Carberry, MB) 6-1, then won 5-3 against Jennifer Sande (Winnipeg, MB). Rosser went on to lose 8-4 against Kelsey Boettcher (Winnipeg, MB). Rosser responded with a 6-3 win over Terry Ursel (Plumas, MB) in their final qualifying round match.
 
. For week 16 of the event schedule, Rosser did not improve upon their best events, dropping from 82nd to 83rd place overall on the World Ranking Standings with 13.405 total points. Rosser ranks 137th overall on the Year-to-Date rankings with 1.125 points earned so far this season.