On Friday, Middaugh's curling team defeated home town favourite Chelsea Carey of Winnipeg, Manitoba 6-3 in the third place tie-breaker and then dominated defending Scotties Tournament of Hearts champion Rachel Homan 10-4 in Friday evening's semi-final.
In the sixth end of the semi-final, Homan accidentally knocked her own counting rock out of the four foot and allowed Middaugh to steal three points.
Middaugh will now play Jennifer Jones of Winnipeg, the 2008 World Champion, in the championship final Saturday evening. The winner of this match will represent Canada in women's curling at the 2014 Olympic Winter Games in Sochi.
Middaugh, at 47 years of age, is the oldest skip in the field, but has shown at the trials that experience in curling is a significant asset.
In the round robin, Jones (6-1) defeated Middaugh (4-3) by a score of 9-7 on Monday morning.
On the men's side, John Morris of Kelowna, British Columbia advanced to the semi-finals against Edmonton's Kevin Martin after Calgary's Kevin Koe eliminated Winnipeg's Mike McEwen 5-4. Morris will play Martin today at 12:30 p.m. mountain time with the winner facing Brad Jacobs of Sault. Ste. Marie, Ontario on Sunday.