Australia's Sally Pearson overcame last week's 100 metres heartbreak to win the hurdles event over the same distance collapsing on the track in tears after her golden run.
Pearson was distraught last Thursday when she was disqualified for a false start three hours after crossing the line first in the women's sprint.
There was to be no false start last night , though, and she quickly took the lead before finishing in 12.67 seconds.
With the Canadian and Jamaican teams leaving some of their best athletes at home, the field was open for Pearson, the Beijing Olympic silver medallist in the event.
Nigeria's Osayemi Oludamola, who was handed the 100 meteres gold after Pearson's disqualification, tested positive for a banned substance and is almost certain to lose the medal if the B sample confirms the original.