Top seed Sania Mirza's quest for a second successive ITF title ended in disappointment as she squandered a one set advantage to go down to local favourite Stephanie Dubois in the finals of the $75,000 Vancouver Open.

Sania lost 6-1, 4-6, 4-6 against a gritty Stephanie, who said the Hyderabadi ace looked jaded after playing tough quarter-final and semi-final matches incidentally against Canadians.